B38 Series Commercial & Industrial Regulator

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1 B38 Series Commercial & Industrial Regulator Advanced Metering and Regulation Technology at Work

2 Features Interchangeable orifice 78 in 2 of diaphragm area Spring-loaded internal relief valve assembly Field interchangeable adjustment spring Controlled breather orifice size eliminates pulsation and provides normal actuation at low flows Wide range of valve body sizes including NPT and Flange connections Benefits 2-/2" relief vent provides exceptional internal relief performance; replaces the need for external relief valves Valve body takes up to 3/8" orifice for increased capacity Fast response protects equipment from shock damage Large 2" diaphragm for smooth outlet pressure control Unmatched overpressure protection with Internal Monitor plus Internal Relief (IMR) option No special tools required for outlet pressure adjustment Single Valve body with built-in monitor operation (IM models only) Internal Monitor is designed to meet D.O.T. Safety Standards Application Appropriate for large capacity commercial and industrial uses where inches of water column or pounds delivery is desired such as utility services, gas engines, burner trains, furnaces, and boilers. The rapid response of the B38 is particularly well suited for applications where sudden on/off loads could cause shock problems. Model Descriptions B38N The B38N is a spring loaded self-operated regulator with no internal relief (N) valve. This model can be used on low or intermediate inlet pressures where an internal relief, or other type of over-pressure protection device is not required. B38R - The B38R is the internal relief (R) version of the B38 Series. The large 2-/2" internal relief valve provides exceptional relief capacity. B38M Used in a series monitoring installation as the upstream regulator. The B38M has an O-ring seal on the valve stem through the throat and a /2" control line tap on the lower diaphragm case. B38M Vent Inlet Pressure Intermediate Pressure Outlet Pressure B38IMN The B38IMN is equipped with an Internal Monitoring (IM) device and no internal relief valve (N). This version is appropriate for Operating Principle Control Line B38N or R Vent applications where overpressure protection is desired without the relief of gas to the atmosphere. B38IMR The B38IMR is equipped with an Internal Monitoring (IM) device as well as a back-up Internal Relief Valve (R). This version is appropriate for applications where an added level of overpressure protection is desired. B38IMRV - The B38IMRV is equipped with an Internal Monitoring (IM) device as well as a back-up Internal Relief Valve (R) and a Vent (V) hole in the sliding orifice. The Vent hole option allows the relief valve to "weep" gas to the atmosphere and signal a problem with the regulator in the event the Internal Monitor comes into operation. Option Designations N No Internal Relief R Internal Relief MN Closed throat with control line tap and no internal relief MR Closed throat with control line tap and internal relief valve IMN Internal Monitor with no Internal Relief IMR Internal Monitor with Internal Relief IMRV Internal Monitor with Internal Relief and Vent Inlet Pressure Outlet Pressure

3 Specifications Material Construction: Valve Body: High tensile strength cast iron (ASTM A-26, Class A) Orifice (Standard Brass (ASTM B6, and IM): Alloy 36) Valve Seat: Buna-N Valve Stem: Plated steel (AISI 25) Lever Pin: Stainless steel (Type 33) Lever: Zinc and dichromate plated steel (AISI C) Upper Diaphragm Zinc and dichromate Plate: plated steel (4 gauge steel) Lower Diaphragm Die cast aluminum (ASTM Plate: B-85 Alloy SC84A) Diaphragm: Buna-N and nylon reinforcing fabric Vent Valve/Seat: Neoprene Vent Screen: Stainless Steel (6 mesh) Adjustment Ferrule: Die cast aluminum (ASTM CS43A) Seal Cap: Die cast aluminum (ASTM CS43A) Diaphragm Case: Die cast aluminum (ASTM B85 Alloy SC84A) Shipping Weight: (one per box): 2" NPT 25 lbs. 2" Flanged 35 lbs. 3" Flanged 45 lbs. Correction factors for non-natural gas applications: The B38 may be used to control gases other than natural gas. To determine the capacity of the B38 for gases other than natural gas, it will be necessary to multiply the values within the capacity tables by a correction factor. The table below lists the correction factors for some of the more common gases: Gas Type Specific Correction Gravity Factor (CF) Air..77 Butane Carbon Dioxide (Dry) Carbon Monoxide (Dry) Natural Gas.6. Nitrogen Propane Propane-Air-Mix.2.7 To calculate the correction factor for gases not listed on the table above, it will be necessary to know the specific gravity of the gas and use it in the formula listed below: Correction Factor (CF) = Where: SG SG 2 SG = Specific Gravity of the gas in which the capacity is published. SG 2 = Specific Gravity of the gas to be controlled. Spring Range Data MODELS N, R, M, D (See Spring Data for IM Models on Page 6) B38 - ADJUSTED OUTLET PRESSURE RANGE SPRING ADJUSTMENT FERRULE AT MIN. AND MAX. DEPTHS Orifice Inlet Spring Outlet Pressure Orifice Inlet Spring Outlet Pressure Size Pressure Color Min. Max Size Pressure Color Min. Max ORANGE 3.3" WC 4.5" WC ORANGE 4.2" WC 6.2" WC BROWN 4.45" WC 6.2" WC BROWN 4.3" WC 7." WC GREEN 5.5" WC 7.75" WC GREEN 6.3" WC 9." WC BLACK 8." WC 3.6" WC BLACK 9.4" WC 5." WC 3/8" 25 PSIG PURPLE 2.4" WC 2.2" WC 3/4" 25 PSIG PURPLE 3.7" WC 22.25" WC BLUE 4." WC 27" WC BLUE 7." WC. PSIG BLUE/WHITE.93 PSIG.6 PSIG BLUE/WHITE.96 PSIG.63 PSIG SILVER.3 PSIG 2.47 PSIG SILVER.42 PSIG 2.5 PSIG SILVER/RED.7 PSIG 2.92 PSIG SILVER/RED.8 PSIG 2.95 PSIG YELLOW 2.25 PSIG 4.5 PSIG YELLOW 2.54 PSIG 4.8 PSIG RED NESTED.75 PSIG 6.75 PSIG RED NESTED.88 PSIG 6.79 PSIG WHITE NESTED 2. PSIG 7.7 PSIG WHITE NESTED 2. PSIG 7.8 PSIG ORANGE 2.25" WC 4.5" WC ORANGE 5." WC 5.9" WC BROWN 3.5" WC 5.9" WC BROWN 5.4" WC 7.8" WC GREEN 5." WC 8.2" WC GREEN 7.5" WC." WC BLACK 8.5" WC 3.95" WC BLACK.9" WC 6." WC PURPLE 2.7" WC 2.4" WC PURPLE 5." WC 23.75" WC /2" 25 PSIG BLUE 6.2" WC.2 PSIG " 25 PSIG BLUE 8.25" WC.7 PSIG BLUE/WHITE.96 PSIG.63 PSIG BLUE/WHITE.4 PSIG.73 PSIG SILVER.38 PSIG 2.5 PSIG SILVER.5 PSIG 2.69 PSIG SILVER/RED.7 PSIG 2.99 PSIG SILVER/RED.88 PSIG 3.6 PSIG YELLOW 2.48 PSIG 4.5 PSIG YELLOW 2.53 PSIG 4.22 PSIG RED NESTED.76 PSIG 6.66 PSIG RED NESTED 2. PSIG 6.94 PSIG WHITE NESTED 2. PSIG 7.7 PSIG WHITE NESTED 2. PSIG 7.8 PSIG ORANGE 3.8" WC 4.5" WC ORANGE 3.5" WC 4.3" WC BROWN 5.4" WC 7.3" WC BROWN 5.2" WC 7.3" WC GREEN 6.4" WC 9.2" WC GREEN 5.8" WC 9.7" WC BLACK 9.25" WC 4.8" WC BLACK 9.4" WC 4.9" WC PURPLE 2.7" WC 2.4" WC PURPLE 3.5" WC 22.2" WC 5/8" 25 PSIG BLUE 5.9" WC 29.45" WC /4" PSIG BLUE 7.3" WC 29.8" WC BLUE/WHITE.9 PSIG.6 PSIG BLUE/WHITE 26.85" WC.64 PSIG SILVER.4 PSIG 2.56 PSIG SILVER.44 PSIG 2.59 PSIG SILVER/RED.67 PSIG 2.9 PSIG SILVER/RED.83 PSIG 2.95 PSIG YELLOW 2.47 PSIG 4. PSIG YELLOW 2.5 PSIG 4.4 PSIG RED NESTED.77 PSIG 6.62 PSIG RED NESTED.9 PSIG 6.63 PSIG WHITE NESTED 2. PSIG 7.7 PSIG WHITE NESTED 2. PSIG 7.8 PSIG ORANGE 3." WC 4.6" WC BROWN 3.95" WC 6.4" WC GREEN 5." WC 8." WC BLACK 9.6" WC 5.3" WC PURPLE 3.5" WC 22.2" WC 3/8" PSIG BLUE 7.75" WC 3.2" WC BLUE/WHITE 27.4" WC.66 PSIG SILVER.42 PSIG 2.54 PSIG SILVER/RED.85 PISG 2.99 PSIG YELLOW 2.52 PSIG 4.6 PSIG RED NESTED.96 PSIG 6.7 PSIG WHITE NESTED 2. PSIG 7.8 PSIG OUTLET PRESSURE CHANGE AS A RESULT OF A PSIG INLET PRESSURE CHANGE ORIFICE SIZE - INCHES SPRING COLOR 3/8" /2" 5/8" 3/4" " -/4" 3/8" ORANGE.2" WC.3" WC.65" WC.9" WC." WC.8" WC." WC BROWN.25" WC.3" WC.4" WC.9" WC." WC.4" WC.2" WC GREEN.3" WC.4" WC.6" WC.7" WC.2" WC 2." WC.4" WC BLACK.3" WC.4" WC.6" WC.7" WC.6" WC 2." WC 2.3" WC PURPLE.3" WC.4" WC.55" WC.8" WC.7" WC.8" WC 2." WC BLUE.4" WC.2 PSIG.55" WC." WC.7" WC 2." WC 2.8" WC BLUE/WT. PSIG.4 PSIG.2 PSIG.3 PSIG.6 PSIG.8 PSIG. PSIG SILVER. PSIG.4 PSIG.6 PSIG.3 PSIG.7 PSIG.2 PSIG.3 PSIG SIL/RED.2 PSIG.3 PSIG.4 PSIG.3 PSIG.8 PSIG. PSIG. PSIG YELLOW.3 PSIG.4 PSIG.3 PSIG.5 PSIG.9 PSIG.2 PSIG.5 PSIG RED NESTED.3 PSIG.5 PSIG.5 PSIG. PSIG.3 PSIG.9 PSIG.23 PSIG WHITE NESTED.3 PSIG.5 PSIG.5 PSIG.3 PSIG.6 PSIG.24 PSIG.28 PSIG * Spring Ranges are appoximate and may vary by application 2

4 Specifications (continued) ORIFICE DATA: Wide Open Orifice Coefficients and Maximum Pressure Data Maximum Maximum Maximum Operating Inlet Pressure Emergency Emergency Inlet Pressure Outlet Pressure Orifice K-Factor (Gas Containment) Size (scfh/psi) < PSIG Outlet < PSIG Outlet < PSIG Outlet > PSIG Outlet All Models All Models N & R Models D & M Models IMN & IMR Models All Models All outlet All outlet PSIG (Bar) PSIG (Bar) PSIG (Bar) PSIG (Bar) pressures pressures PSIG (Bar) PSIG (Bar) 3/8" (8.6) 75 (2.) (2.) 3 (2.6) 3 (2.) 3/8" IM (8.6) 75 (2.) 3 (2.6) 3 (2.) /2" 5 25 (8.6) 25 (8.6) (2.) 3 (2.6) 3 (2.) /2" IM (8.6) 75 (2.) 3 (2.6) 3 (2.) 5/8" 7 75 (5.2) 25 (8.6) (.3) 3 (2.6) 3 (2.) 5/8" IM (4.) 5 (.3) 3 (2.6) 3 (2.) 3/4" 6 (4.) 25 (8.6) (.3) 3 (2.6) 3 (2.) 3/4" IM (4.) 5 (.3) 3 (2.6) 3 (2.) " 5 6 (4.) (6.9) --- (6.9) 7 (.7) 3 (2.) " IM (2.) (6.9) 7 (.7) 3 (2.) -/4" 7 4 (2.8) 75 (5.2) (5.2) 25 (8.6) 3 (2.) -3/8" 2 25 (.7) 5 (3.4) (3.4) (6.9) 3 (2.) MAXIMUM EMERGENCY OUTLET PRESSURE (no damage): 8.7 psig (.6 bar) VALVE BODY SIZES Inlet Outlet Screwed Flanged (NPT) (ANSI 25) -/2" -/2" Y --- 2" 2" Y Y 3" 3" --- Y Y indicates that the valve body is available in that configuration WIDE-OPEN FLOW CALCULATIONS For wide-open orifice flow calculations use the following equations: For P /P 2 <.89 use: Q= K P 2 (P - P 2 ) For P /P 2 >.89 use: Q = KP 2 Where: P = absolute inlet pressure (psia) P 2 = absolute outlet pressure (psia) Q = flow rate (scfh) K = orifice coefficient (scfh/psi) Available Vent Sizes: Operating Temperature Range: Loading Ring Position: Other Available Options: " NPT on non-internal relief (N) models only 2-/2" NPT (Standard) on internal relief (R) models only 2" NPT (Optional) Warning: The 2" relief size will reduce relief capacity -2 F to 5 F For outlet pressure < psig: 4 degrees For outlet pressure > psig: degress - Seal wire to indicate unapproved tampering - /8" pipe plug tap on upstream side of valve body 3

5 B38 Dimensions Valve Body Type Models A B C D E F G H R -/2" OR 2" NPT N, DN, MN, IMN 7 /2" 3 3/4" 5/8" 2 7/8" 4 5/6" 9 5/8" 2 3/6" 6 3/4" 3 3/8" R, DR, MR, IMR, IMRV 7 /2" 3 3/4" 5/8" 3" 5" 9 5/8" 2 3/6" 6 3/4" 3 3/8" 2" Flanged N, DN, MN, IMN " 5" 5/8" 2 7/8" 4 5/6" 9 5/8" 2 3/6" 6 /2" 3 5/6" R, DR, MR, IMR, IMRV " 5" 5/8" 3" 5" 9 5/8" 2 3/6" 6 /2" 3 5/6" 3" Flanged N, DN, MN, IMN " 5" 5/8" 2 7/8" 4 5/6" 9 5/8" 2 3/6" 7 3/8" 4 3/6" R, DR, MR, IMR, IMRV " 5" 5/8" 3" 5" 9 5/8" 2 3/6" 7 3/8" 4 3/6" R-Radius 4

6 B38 Commercial & Industrial Regulator - 7" (7 mbar) Capacity Table (" Droop) - Models N, R, DN, DR, MN, MR (IM Model Capacity tables located in back section of this document) Set Point: 7" w.c. (7.5 2 scfh (5.68 m 3 /h) Valve Body: 2" x 2" NPT Green Spring - Part No Mounting Position Inlet Loading Capacities in scfh (m 3 /hr) by Orifice Size Pressure Ring 3/8" /2" 5/8" 3/4" " /4" 3/8" Psig Bar Setting 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm 3.8 mm 34.9 mm 8" w.c. 2 mbar " w.c. 25 mbar 2" w.c. 3 mbar 4" w.c. 35 mbar 6" w.c. 4 mbar 8" w.c. 45 mbar 2" w.c. 52 mbar 24" w.c. 6 mbar 69 mbar (9.8) 45 (2.6) 6 (6.8) 5 (32.2) 4 2 (5.88) 45 (2.6) 6 (6.8) ) 45 (2.6) 5 (32.2) 5 (42.) 75 (49.) 4 38 (.64) 56 (5.68) 25 (7.) 59 (6.52) 45 (4.6) 65 (46.2) 5 (4.28) 85 (23.8) 57 (5.96) 25 (35.) 75 (49.) 2 (56.) 4 32 (8.96) 87 (24.36) 65 (46.2) 2 (56.) 3 (8.4) 35 (9.8) 65 (8.2) 65 (46.2) 2 (58.8) 26 (72.8) 4 39 (.92) 37 (.36) 5 (42.) 25 (57.4) 22 (6.6) 4 (.2) 45 (2.6) 5 (4.) 8 (5.4) 26 (72.8) 28 (78.4) 4 32 (8.96) 4 (.2) 8 (5.4) 23 (64.4) 27 (75.6) 29 (8.2) 5 (4.) 25 (35.) 2 (56.) 28 (78.4) 29 (8.2) 4 27 (7.56) 45 (2.6) 39 (.92) (28.) 2 (56.) 28 (78.4) 28 (78.4) 3 (8.68) 45 (2.6) 72 (2.6) 5 (42.) 25 (7.) 29 (8.2) 33 (92.4) 4 3 (8.4) 62 (7.36) 53 (4.84) 45 (4.6) 22 (6.6) 29 (8.2) 32 (89.6) 37 (.36) 55 (5.4) 77 (2.56) 6 (44.8) 27 (75.6) 33 (92.4) 37 (3.6) 4 35 (9.8) 7 (9.6) 65 (8.2) 3 (28.84) 27 (75.6) 3 (86.8) 33 (92.4) 8 (22.4) 95 (26.6) 3 (36.4) 7 (47.6) 25 (7.) 34 (95.2) 35 (98.) 4 8 (22.4) 95 (26.6) 5 (29.4) 55 (43.4) 25 (57.4) 23 (64.4) 25 (7.) (3.8) 6 (44.8) 25 (6.2) 3 (84.) 4 (4.8) 57 (59.6) 585 (63.8) 4 (3.8) 5 (42.) 9 (53.2) 26 (72.8) 33 (92.4) 37 (3.6) 44 (23.2) 45 (4.6) 22 (6.6) 295 (82.6) 4 (2.) 56 (56.8) 76 (22.8) 77 (25.6) 4 45 (4.6) 2 (56.) 26 (72.8) 37 (3.6) 42 (7.6) 5 (4.) 59 (65.2) 9 (53.2) 32 (89.6) 43 (2.4) 585 (63.8) 8 (224.) 5 (294.) 8 (32.4) 4 9 (53.2) 29 (8.2) 38 (6.4) 53 (48.4) 56 (56.8) 66 (84.8) 94 (263.2) 35 (88.2) 5 (4.) 69 (93.2) 93 (26.4) 28 (358.4) 7 (476.) 77 (495.6) 4 35 (88.2) 47 (3.6) 6 (7.8) 87 (243.6) 93 (26.4) 98 (274.4) 45 (46.) (35.8) 7 (98.8) 5 (284.2) 325 (37.) 375 (385.) 42 (397.6) 2 (56.) (54.) 9 (252.) 2 (336.) 2 (336.) 9 (252.) (38.) (96.) 5 (322.) 55 (434.) 65 (462.) (28.) 2 (56.) (229.6) 25 (35.) 4 (392.) 8 (5.4) (38.) (38.) 34 (375.2) 2 (56.) 2 (56.) 2 (56.) (299.6) 4445 (44.46) 2 (56.) (36.4) 582 (442.96) (33.88) 652 (462.56) (48.2) 2 (56.) (56.) 2 (56.) Change in outlet for a psig (.69 Bar) inlet change Increase in outlet pressure required for no flow Inlet pressure is too low to deliver 7" w.c. (7.5 mbar).3" wc.4" wc.6" wc.7" wc.2" wc 2." wc.4" wc.3" wc.5" wc." wc." wc.7" wc.6" wc 2.2" wc Do not use this orifice size at this inlet pressure Green Spring above line; Brown Spring below line 5

7 B38 Commercial & Industrial Regulator - 7" (7 mbar) Typical Performance 9 B38R REGULATOR PERFORMANCE 7" w.c. SET POINT Type and Model...B38 R Inlet Size....2" NPT Orifice Size.../4" x 3/8" Spring...Green Set Point 7." wc with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE INCHES WATER COLUMN PSIG 2 PSIG 3 PSIG 4 PSIG 6 PSIG 5 PSIG RATE OF FLOW - CUBIC FEET PER HOUR.6 SP. GR. GAS psia - 6 F Relief Characteristic R Model Only 8 7 B38R RELIEF CURVES - BLOCKED PER ORIFICE 7" w.c. SET POINT -/4 Type and Model...B38 R Inlet Size...2" NPT Vent Size...2-/2" NPT Set Point 7." w.c. with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE PSIG /8 3/4 5/8 /2 3/ INLET PRESSURE PSIG 6

8 B38 Commercial & Industrial Regulator - 4" (34 mbar) Capacity Table (2" Droop) - Models N, R, DN, DR, MN, MR (IM Model Capacity tables located in back section of this document) Set Point: 4" w.c. (35 5 scfh (.42 m 3 /h) Valve Body: 2" x 2" NPT Purple Spring - Part No Black Spring - Part No Mounting Position Inlet Loading Capacities in scfh (m 3 /hr) by Orifice Size Pressure Ring 3/8" /2" 5/8" 3/4" " /4" 3/8" Psig Bar Setting 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm 3.8 mm 34.9 mm 6" w.c. 4 mbar 8" w.c. 45 mbar 2" w.c. 52 mbar 24" w.c. 6 mbar 69 mbar (2.32) 575 (6.) 725 (2.3) 9 (25.2) 9 (25.2) 35 (37.8) 4 45 (2.6) 45 (2.6) 75 (2.) 9 (25.2) 25 (35.) 25 (35.) 525 (4.7) 725 (2.3) 85 (23.8) 2 (33.6) 4 (39.2) 7 (47.6) 4 5 (4.) 6 (6.8) 85 (23.8) (3.8) 2 (33.6) 7 (47.6) 23 (6.44) 55 (5.4) 85 (23.8) 25 (35.) 35 (37.8) 9 (53.2) 25 (7.) 4 25 (7.) 625 (7.5) 75 (2.) 5 (29.4) 35 (37.8) 7 (47.6) 245 (68.6) 28 (7.84) 625 (7.5) 95 (26.6) 35 (37.8) 7 (47.6) 245 (68.6) 2 (58.8) 4 26 (7.28) 725 (2.3) 95 (26.6) 5 (32.2) 5 (42.) 24 (67.2) 24 (57.2) 325 (9.) 75 (2.) 5 (32.2) 65 (46.2) 2 (58.8) 25 (6.2) 23 (64.4) 4 3 (8.4) 8 (22.4) 75 (32.9) 35 (37.8) 2 (56.) 2 (56.) 225 (63.) (28.) 4 (39.2) 2 (58.8) 25 (7.) 3 (86.8) 35 (98.) 5 (4.) 4 85 (23.8) 2 (33.6) 9 (53.2) 22 (6.6) 27 (75.6) 3 (84.) 32 (89.6) 2 (33.6) 6 (44.8) 24 (67.2) 32 (89.6) 47 (3.6) 65 (82.) 7 (96.) 4 (28.) 3 (36.4) 2 (58.8) 29 (8.2) 33 (92.4) 53 (48.4) 55 (54.) 7 (47.6) 2 (58.8) 35 (98.) 5 (4.) 7 (96.) 85 (238.) 9 (252.) 4 5 (42.) 9 (53.2) 3 (84.) 35 (98.) 53 (48.4) 55 (54.) 65 (82.) 3 (84.) 5 (4.) 35 (98.) 9 (252.) 5 (294.) 25 (35.) 35 (378.) 4 3 (84.) 45 (26.) 63 (76.4) 75 (2.) 82 (229.6) 95 (266.) 8 (224.) 45 (26.) 8 (224.) 5 (294.) 35 (378.) 55 (434.) 9 (532.) 2 (56.) 4 45 (26.) 75 (2.) (28.) (28.) (38.) 5 (322.) 6 (68.) 65 (82.) 5 (294.) 4 (392.) 75 (49.) 2 (56.) 2 (56.) 4 65 (82.) 9 (252.) 2 (336.) 5 (322.) 5 (322.) 8 (224.) 76 (22.8) 3 (364.) 85 (58.) 2 (56.) 2 (56.) 2 (56.) 4 76 (22.8) (28.) 3 (364.) 2 (336.) 5 (322.) 85 (238.) 9 (252.) 5 (42.) 2 (56.) 2 (56.) 2 (56.) 2 (56.) 4 9 (252.) 5 (322.) 35 (378.) 25 (35.) (38.) (28.) 5 (294.) 75 (49.) 2 (56.) 2 (56.) 2 (56.) 2 (56.) 4 5 (294.) 22 (34.6) 42 (397.6) 25 (35.) (38.) (38.) (329.56) 284 (359.52) 4935 (48.8) 425 (395.5) (363.86) 425 (395.5) 695 (474.6) (396.48) 534 (429.52) 77 (495.6) (438) 692 (478) 85 (523) (392) 26 (583) 225 (637) Change in outlet for a psig (.69 Bar) inlet change.3" wc.4" wc.55" wc.8" wc.7" wc.8" wc 2." wc Increase in outlet pressure required for no flow.7" wc.4" wc.9" wc 2." wc 2.6" wc 2.9" wc 3." wc Inlet pressure is too low to deliver 4" w.c. (35mbar) Do not use this orifice size at this inlet pressure Purple Spring above line; Black Spring below line 7

9 B38 Commercial & Industrial Regulator - 4" (34 mbar) Typical Performance Type and Model...B38 R Inlet Size....2" NPT Orifice Size.../4" x 3/8" Spring...Green Set Point 4." wc with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE INCHES WATER COLUMN PSIG B38R REGULATOR PERFORMANCE 4" w.c. SET POINT 2 PSIG 3 PSIG 4 PSIG 5 PSIG 6 PSIG RATE OF FLOW - CUBIC FEET PER HOUR.6 SP. GR. GAS psia - 6 F Relief Characteristic R Model Only 8 7 B38R RELIEF CURVES - BLOCKED PER ORIFICE 4" w.c. SET POINT -/4 Type and Model...B38 R Inlet Size...2" NPT Vent Size...2-/2" NPT Set Point 4." w.c. with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE PSIG /8 3/4 5/8 /2 3/ INLET PRESSURE PSIG 8

10 B38 Commercial & Industrial Regulator - psig (69 mbar) Capacity Table (% absolute Droop) - Models N, R, DN, DR, MN, MR (IM Model Capacity tables located in back section of this document) Set Point: psig (69 2 scfh (5.68 m 3 /h) 2" X 2" NPT Valve Body Blue/White Spring - Part No Mounting Position Inlet Loading Capacities in scfh (m 3 /hr) by Orifice Size Pressure Ring 3/8" /2" 5/8" 3/4" " /4" 3/8" Psig Bar Setting 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm 3.8 mm 34.9 mm (22.4) 3 (36.4) 65 (46.2) 23 (64.4) 27 (75.6) 33 (92.4) 42 (7.6) (32.2) 7 (47.6) 22 (6.6) 33 (92.4) 4 (2.) 435 (2.8) 5 (4.) (47.6) 24 (67.2) 35 (88.2) 45 (26.) 52 (45.6) 65 (82.) 75 (2.) (7.) 4 (2.) 6 (68.) 65 (82.) 85 (238.) (38.) 2 (33.6) (2.4) 7 (96.) 9 (252.) (38.) 4 (392.) 7 (476.) 2 (56.) (73.6) 94 (263.2) 25 (35.) 45 (46.) 85 (58.) 2 (56.) (2.) 2 (336.) 5 (42.) 9 (532.) 2 (56.) 2 (56.) (238.) 4 (392.) 2 (56.) 2 (56.) 2 (56.) (294.) 55 (434.) 2 (56.) 2 (56.) 2 (56.) (37.24) 9795 (554.26) 2 (56.) (363.86) 2 (56.) (396.48) 2 (56.) (43.) 2 (56.) (483.) 2 (56.) B38 Commercial & Industrial Regulator - psig (69 mbar) Capacity Table (2% absolute Droop) - Models N, R, DN, DR, MN, MR (IM Model Capacity tables located in back section of this document) Set Point: psig (69 2 scfh (5.68 m 3 /h) 2" X 2" NPT Valve Body Blue/White Spring - Part No Mounting Position Inlet Loading Capacities in scfh (m 3 /hr) by Orifice Size Pressure Ring 3/8" /2" 5/8" 3/4" " /4" 3/8" Psig Bar Setting 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm 3.8 mm 34.9 mm (29.96) 4 (39.2) 2 (58.8) 32 (89.6) 43 (2.4) 5 (4.) 62 (73.6) (4.6) 22 (6.6) 35 (85.4) 4 (2.) (2.) (6.6) 32 (89.6) 44 (23.2) 63 (76.4) (294.).69 3 (86.8) 42 (7.6) 75 (2.) 9 (252.) (46.) (3.6) 8 (224.) 5 (322.) 4 (392.) (56.) (79.2) 5 (294.) 5 (42.) 85 (58.) (2.) 3 (364.) 85 (58.) 2 (56.) (246.4) 55 (434.) 2 (56.) 2 (56.) (294.) 75 (49.) 2 (56.) 2 (56.) (37.24) 85 (58.) 2 (56.) (363.86) 2 (56.) (396.48) 2 (56.) (43.) 2 (56.) (483.) 2 (56.) Change in outlet for a psig (.69 Bar) inlet change Increase in outlet pressure required for no flow. psig.4 psig.2 psig.3 psig.6 psig.8 psig. psig.6 psig.5 psig.6 psig.7 psig. psig.3 psig.5 psig Do not use this orifice size at this inlet pressure 9

11 B38 Commercial & Industrial Regulator - psig (69 mbar) Typical Performance.4 B38R REGULATOR PERFORMANCE PSIG SET POINT Type and Model...B38 R Inlet Size....2" NPT Orifice Size.../4" x 3/8" Spring...Green Set Point. psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE INCHES WATER COLUMN PSIG 2 PSIG 3 PSIG 4 PSIG 5 PSIG 6 PSIG % Droop 2% Droop RATE OF FLOW - CUBIC FEET PER HOUR.6 SP. GR. GAS psia - 6 F Relief Characteristic R Model Only Type and Model...B38 R Inlet Size...2" NPT Vent Size...2-/2" NPT Set Point. psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE PSIG B38R RELIEF CURVES - BLOCKED PER ORIFICE PSIG SET POINT -3/8 -/4 2 3/ INLET PRESSURE PSIG 3/4 5/8 /2

12 B38 Commercial & Industrial Regulator - 2 psig (38 mbar) Capacity Table (% absolute Droop) - Models N, R, DN, DR, MN, MR (IM Model Capacity tables located in back section of this document) Set Point: 2 psig (38 2 scfh (5.68 m 3 /h) 2" x 2" NPT Valve Body Silver Spring - Part No Mounting Position Inlet Loading Capacities in scfh (m 3 /hr) by Orifice Size Pressure Ring 3/8" /2" 5/8" 3/4" " /4" 3/8" Psig Bar Setting 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm 3.8 mm 34.9 mm (23.8) 7 (9.6) 8 (22.4) 2 (33.6) 6 (44.8) 75 (49.) 25 (57.4) (37.8) 2 (33.6) 45 (4.6) 65 (46.2) 23 (64.4) 285 (79.8) 3 (86.8).69 5 (42.) 9 (53.2) 25 (7.) 3 (86.8) 48 (34.4) 58 (62.4) 63 (76.4) (75.6) 3 (84.) 37 (3.6) 72 (2.6) 9 (252.) 5 (294.) 5 (322.) (6.4) 47 (3.6) 75 (2.) 2 (285.6) 25 (35.) 6 (448.) (48.4) 8 (224.) 98 (274.4) 35 (378.) 75 (49.) 2 (56.) (96.) (28.) 3 (364.) 45 (46.) 2 (56.) (252.) 45 (46.) 63 (456.4) 2 (56.) 2 (56.) (288.4) 339 (374.92) 2 (56.) (332.22) 5594 (436.63) (37.5) 6756 (469.7) (462.) 2 (56.) (548.8) 2 (56.) B38 Commercial & Industrial Regulator - 2 psig (38 mbar) Capacity Table (2% absolute Droop) - Models N, R, DN, DR, MN, MR (IM Model Capacity tables located in back section of this document) Set Point: 2 psig (38 2 scfh (5.68 m 3 /h) 2" x 2" NPT Valve Body Silver Spring - Part No Mounting Position Inlet Loading Capacities in scfh (m 3 /hr) by Orifice Size Pressure Ring 3/8" /2" 5/8" 3/4" " /4" 3/8" Psig Bar Setting 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm 3.8 mm 34.9 mm (33.6) 2 (33.6) 55 (43.4) 2 (56.) 325 (9.) 34 (95.2) 3975 (.3) (46.2) 25 (57.4) 25 (7.) 33 (92.4) 445 (24.6) 58 (62.4) 635 (77.8) (67.2) 37 (3.6) 48 (34.4) 6 (7.8) 8 (224.) 2 (285.6) 5 (322.) (7.6) 5 (42.8) 8 (224.) (38.) 3 (364.) 55 (434.) 85 (58.) (59.6) 85 (238.) 5 (294.) 42 (397.6) 75 (49.) 2 (56.) (96.) 5 (294.) 35 (378.) 85 (58.) 2 (56.) 2 (56.) (246.4) 25 (35.) 6 (448.) 2 (56.) 2 (56.) (27.6) 65 (462.) 2 (56.) 2 (56.) 2 (56.) (37.24) 5965 (447.2) 2 (56.) (367.2) 92 (537.88) (396.48) 283 (6.24) (476.) 2 (56.) (56.) 2 (56.) Change in outlet for a psig (.69 Bar) inlet change Increase in outlet pressure required for no flow. psig.4 psig.6 psig.3 psig.7 psig.2 psig.3 psig.5 psig.5 psig.6 psig.6 psig.8 psig.9 psig. psig Do not use this orifice size at this inlet pressure

13 B38 Commercial & Industrial Regulator - 2 psig (38 mbar) Typical Performance 2.5 B38R REGULATOR PERFORMANCE 2 PSIG SET POINT Type and Model...B38 R Inlet Size....2" NPT Orifice Size.../4" x 3/8" Spring...Green Set Point 2. psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE INCHES WATER COLUMN PSIG 2 PSIG 3 PSIG 4 PSIG 5 PSIG 6 PSIG % Droop 2% Droop RATE OF FLOW - CUBIC FEET PER HOUR.6 SP. GR. GAS psia - 6 F Relief Characteristic R Model Only Type and Model...B38 R Inlet Size...2" NPT Vent Size...2-/2" NPT Set Point 2. psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE PSIG B38R RELIEF CURVES - BLOCKED PER ORIFICE 2 PSIG SET POINT -3/8 -/ INLET PRESSURE PSIG 3/4 5/8 /2 3/8 2

14 B38 Commercial & Industrial Regulator - 5 psig (345 mbar) Capacity Table (% absolute Droop) - Models N, R, DN, DR, MN, MR (IM Model Capacity tables located in back section of this document) Set Point: 5 psig (345 2 scfh (5.68 m 3 /h) 2" x 2" NPT Valve Body Red Nested Spring - Part No Mounting Position Inlet Loading Capacities in scfh (m 3 /hr) by Orifice Size Pressure Ring 3/8" /2" 5/8" 3/4" " /4" 3/8" Psig Bar Setting 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm 3.8 mm 34.9 mm.69 5 (4.) 95 (26.6) (28.) 25 (35.) 5 (42.) 2 (56.) 225 (63.) 2.38 (28.) (28.) 4 (39.2) 7 (47.6) 2 (56.) 2 (56.) 25 (7.) (3.8) 5 (32.2) 8 (5.4) 24 (67.2) 28 (78.4) 25 (7.) (42.) 3 (36.4) 23 (64.4) 27 (75.6) 36 (.8) 62 (73.6) (47.6) 6 (44.8) 28 (78.4) 33 (92.4) 37 (3.6) (89.6) 365 (2.2) 58 (62.4) 7 (96.) (28.) (66.33) 26 (57.68) 3399 (95.7) (79.) 3277 (9.76) (79.3) 3422 (95.82) (62.4) 79 (22.2) (96.) 8 (32.4) B38 Commercial & Industrial Regulator - 5 psig (345 mbar) Capacity Table (2% absolute Droop) - Models N, R, DN, DR, MN, MR (IM Model Capacity tables located in back section of this document) Set Point: 5 psig (345 2 scfh (5.68 m 3 /h) 2" x 2" NPT Valve Body Red Nested Spring - Part No Mounting Position Inlet Loading Capacities in scfh (m 3 /hr) by Orifice Size Pressure Ring 3/8" /2" 5/8" 3/4" " /4" 3/8" Psig Bar Setting 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm 3.8 mm 34.9 mm.69 9 (25.2) 75 (49.) 2 (56.) 25 (7.) 25 (7.) 35 (98.) 4 (2.) (33.6) 8 (5.4) 27 (75.6) 33 (92.4) 4 (2.) 45 (26.) 52 (45.6) (64.4) 24 (67.2) 36 (.8) 5 (42.8) 62 (73.6) 7 (96.) (78.4) 3 (84.) 4 (4.8) 65 (82.) 8 (224.) 85 (238.) (98.) 37 (3.6) 6 (68.) 85 (238.) 9 (252.) (68.) 75 (2.) 98 (274.4) 5 (322.) 5 (42.) (24.) 4635 (29.78) 8446 (236.49) (48.7) 7458 (28.82) (58.59) 7552 (2.46) (238.) 3 (364.) (288.4) 67 (467.6) Change in outlet for a psig (.69 Bar) inlet change Increase in outlet pressure required for no flow.3 psig.5 psig.5 psig. psig.3 psig.9 psig.23 psig.8 psig. psig. psig. psig.8 psig.2 psig.22 psig Do not use this orifice size at this inlet pressure 3

15 B38 Commercial & Industrial Regulator - 5 psig (345 mbar) Typical Performance Type and Model...B38 R Inlet Size....2" NPT Orifice Size.../4" x 3/8" Spring...Green Set Point 5. psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE INCHES WATER COLUMN PSIG B38R REGULATOR PERFORMANCE 5 PSIG SET POINT 2 PSIG 3 PSIG 4 PSIG 5 PSIG 6 PSIG % Droop 2% Droop RATE OF FLOW - CUBIC FEET PER HOUR.6 SP. GR. GAS psia - 6 F Relief Characteristic R Model Only B38R RELIEF CURVES - BLOCKED PER ORIFICE 5 PSIG SET POINT -/4 Type and Model...B38 R Inlet Size...2" NPT Vent Size...2-/2" NPT Set Point 5. psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE PSIG /8 3/4 5/8 / INLET PRESSURE PSIG 4

16 MODELS B38IMR, B38IMRV & B38IMN: INTERNAL MONITOR PRINCIPLE OF OPERATION A. Standard Regulator and upstream monitor orifice B. Standard Regulator orifice failed; upstream monitor orifice control C. Main orifice failed - upstream monitor orifice "lock-up" D. "V" Option - Vent s small volume of gas to atmosphere through relief valve inlet pressure outlet pressure Internal Monitor Principle of Operation A. The internal monitor (IM) orifice performs like a standard regulator and monitor orifice in that the monitor orifice is wide open under normal operation and the regulating orifice and valve seat actuate to control outlet flow and pressure. The regulator is free to lock-up in the usual manner, with pressure increase to position the valve seat "bubble" tight against the regulating orifice face. However, both the monitor seat and the regulator seat may close together if the positive shock lockup exceeds the monitor spring setting. B. If the main valve seat fails to control the gas flow and pressure due to foreign matter between the seat and orifice face, or if the seat is eroded, the internal monitor orifice automatically goes into operating position at a slightly higher outlet pressure (SEE INTERNAL MONITOR LOCK-UP AND RELIEF PRESSURE TABLE ON PAGE 6). Any time the pressure on the large main diaphragm exceeds the force of the fixed monitor spring and the adjusted pressure of the main spring, this increase in outlet pressure causes the main valve seat to push against the sliding orifice, compressing the monitor spring and positions the monitor orifice to control the gas flow. The IM orifice now functions as a monitor regulator and will continue to monitor so long as the main seats fails to control at the normal adjusted outlet pressure. However, if the gas load demand is increased beyond the Internal Monitor s capacity, the outlet pressure is reduced to normal adjusted pressure and the regulator resumes normal regulation. C. However, if the demand for gas is decreased to zero flow during monitor operation, the sliding orifice continues to close until its orifice is in the gas tight position (monitor lock-up) against the BUNA-N monitor valve seat. Outlet pressure required for Internal Monitor "lock-up" is shown in Internal Monitor Lock-Up Table on Page 6. D. On installations where a small volume of over-pressure gas can be safely vented to atmosphere, the advantage of both relief valve and monitor safety can be combined. The monitor to hold overpressure buildup to a lowpressure increase, and relief gas vented to atmosphere to indicate that the main valve has failed and the regulator is on monitor operation. 5

17 Spring Range Data Models B38IMN, B38IMR ADJUSTED OUTLET PRESSURE RANGE SPRING ADJUSTMENT FERRULE AT MIN. AND MAX. DEPTHS Orifice Size Inlet Pressure Spring Color Outlet Pressure Min. Max Orange 2.8" W.C. 4." W.C. Brown 4.2" W.C. 6.9" W.C. Green 5.3" W.C. 8." W.C. 3/8" 25 PSIG Black 7." W.C. 2.6" W.C. Blue/Wht.5 PSIG.2 PSIG Silver/Red.2 PSIG 2.6 PSIG Yellow.57 PSIG 3.56 PSIG Red 2.23 PSIG 5.3 PSIG* Orange 2.8" W.C. 4.2" W.C. Brown 4.2" W.C. 7." W.C. Green 5.3" W.C. 8.2" W.C. /2" 25 PSIG Black 7.2" W.C. 2.9" W.C. Blue/Wht.5 PSIG. PSIG Silver/Red.2 PSIG 2.6 PSIG Yellow.57 PSIG 3.64 PSIG Red 2.26 PSIG 5.3 PSIG* Orange 3.3" W.C. 4.6" W.C. Brown 4.6" W.C. 7.3" W.C. Green 6." W.C. 8.7" W.C. 5/8" 25 PSIG Black 8." W.C. 3.6" W.C. Blue/Wht.57 PSIG.5 PSIG Silver/Red.29 PSIG 2.9 PSIG Yellow.78 PSIG 3.88 PSIG Red 2.48 PSIG 5.8 PSIG* Orange 3.6" W.C. 4.8" W.C. Brown 5.2" W.C. 7.8" W.C. Green 6.6" W.C. 9.2" W.C. 3/4" 25 PSIG Black 8.2" W.C. 4." W.C. Blue/Wht.57 PSIG.7 PSIG Silver/Red.3 PSIG 2.23 PSIG Yellow.77 PSIG 3.79 PSIG Red 2.47 PSIG 5.3 PSIG* Orange 3.3" W.C. 4.9" W.C. Brown 5." W.C. 7.7" W.C. Green 6.2" W.C. 8.8" W.C. " PSIG Black 8.3" W.C. 3.95" W.C. Blue/Wht.57 PSIG.7 PSIG Silver/Red.28 PSIG 2.24 PSIG Yellow.73 PSIG 3.8 PSIG Red 2.44 PSIG 5.6 PSIG* INTERNAL MONITOR LOCK-UP AND RELIEF PRESSURE DATA Main Outlet IM Lock-up Relief Spring Pressure Pressure Pressure Color Set Models Model Point B38IMN B38IMRV & IMR BROWN 5.5" w.c.." w.c. 5." w.c. BROWN N Models 7. w.c. 2.5" w.c. 7." w.c. GREEN R Models 7." w.c. 2.5" w.c. 7." w.c. BLACK." w.c. 9." w.c. 22.5" w.c. BLACK 4." w.c. 23.5" w.c. 29.5" w.c. BLUE/WHT psig.5 psig.9 psig SILVER/RED 2 psig 3. psig 3.8 psig YELLOW 3 psig 4. psig 5. psig RED NESTED 5 psig 6.2 psig 8.4 psig * Maximum allowable pressure is 5. PSIG OUTLET PRESSURE CHANGE AS A RESULT OF A PSIG INLET PRESSURE CHANGE ORIFICE SIZE - INCHES SPRING COLOR 3/8" /2" 5/8" 3/4" " ORANGE." W.C..22" W.C..32" W.C..47" W.C..86" W.C. BROWN.3" W.C..23" W.C..4" W.C..5" W.C..95" W.C. GREEN.7" W.C..23" W.C..4" W.C..5" W.C.." W.C. BLACK.7" W.C..23" W.C..42" W.C..5" W.C.." W.C. BLUE/WHT. PSIG. PSIG.2 PSIG.2 PSIG.4 PSIG SILVER/RED. PSIG. PSIG.2 PSIG.2 PSIG.5 PSIG YELLOW. PSIG.2 PSIG.2 PSIG.3 PSIG.6 PSIG RED. PSIG.2 PSIG.2 PSIG.3 PSIG.7 PSIG 6

18 B38 Commercial & Industrial Regulator - 7" (7 mbar) Capacity Table (" Droop) - Models IMN, IMR, IMRV Set Point: 7" w.c. ( 2 scfh (5.68 m 3 /h) Loading Ring Setting: 27 degrees 2" x 2" NPT Valve Body Green Spring-Part No Mounting Position Inlet Capacities in scfh (m 3 /hr) by Orifice Size Pressure 3/8" /2" 5/8" 3/4" " Psig Bar 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm.7 4 (.2) 65 (8.2) (28.) 2 (33.6) 6 (44.8) (2.) 5 (32.2) 2 (58.8) 23 (64.4) 3 (84.) 3.2 (28.) 65 (46.2) 28 (78.4) 3 (84.) 4 (2.) (42.) 22 (6.6) 38 (6.4) 46 (28.8) 53 (48.4) (67.2) 36 (.8) 6 (7.8) 69 (93.2) 88 (246.4) (89.6) 5 (4.) 83 (232.4) 84 (235.2) 5 (294.) (23.2) 6 (68.) 95 (266.) 75 (3.) 2 (336.) (4.) 67 (87.6) 5 (322.) 43 (4.4) 5 (42.) (54.) 7 (96.) 25 (35.) 48 (44.4) 7 (476.) (96.) 8 (224.) 45 (46.) 5 (42.) (224.) 82 (229.6) 5 (42.) 6 (448.) (249.2) 856 (239.) 2 (56.) 2 (56.) (269.64) 995 (254.66) (285.) 5 (294.) (284.76) 2 (336.) (289.) 6 (448.) (378.) 2 (56.) (433.6) 2 (56.) (476.) 2 (56.) Change in outlet for a psig (.69 Bar) inlet change Increase in outlet pressure required for no flow.7" w.c..23" w.c..4" w.c..5" w.c. " w.c..2" wc.2" wc.4" wc.8" wc." wc Do not use this orifice size at this inlet pressure Max. capacities on inches w.c. outlet: -/2" outlet connection - 2, scfh 2" outlet connection - 2, scfh 3" outlet connection (2" I.P.S.) - 2, scfh 7

19 B38 Commercial & Industrial Regulator - 7" (7 mbar) Typical Performance 9 B38 IM REGULATOR PERFORMANCE 7" W.C. SET POINT Type and Model...B38 IM Inlet Size....2" NPT Orifice Size.../4" x 3/8" Spring...Green Set Point 7" w.c. with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE INCHES WATER COLUMN PSIG 2 PSIG 3 PSIG 4 PSIG 6 PSIG 5 PSIG RATE OF FLOW - CUBIC FEET PER HOUR.6 SP. GR. GAS psia - 6 F Relief Characteristic R Model Only Type and Model...B38 IMR Inlet Size...2" NPT Vent Size...2-/2" NPT Set Point 7" w.c. with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE PSIG B38 IMR RELIEF CURVES - BLOCKED PER ORIFICE 7" W.C. SET POINT 3/4 5/8 4.3 /2 3/ VENTED FLOW - C.F.H INLET PRESSURE PSIG 8

20 B38 Commercial & Industrial Regulator - psig (69 mbar) Capacity Table (% absolute Droop) - Models IMN, IMR, IMRV Set Point: psig (69 2 scfh (5.68 m 3 /h) Loading Ring Setting: degrees 2" X 2" NPT Valve Body Blue/White Spring - Part No Mounting Position Inlet Capacities in scfh (m 3 /hr) by Orifice Size Pressure 3/8" /2" 5/8" 3/4" " Psig Bar 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm (4.) 7 (9.6) 6 (44.8) 7 (47.6) 24 (67.2) (2.) 2 (33.6) 2 (56.) 23 (64.4) 29 (8.2) (39.2) 9 (53.2) 3 (84.) 33 (92.4) 42 (7.6).69 2 (56.) 29 (8.2) 48 (34.4) 6 (6.8) 7 (96.) (98.) 5 (42.8) 83 (232.4) 95 (266.) 3 (36.4) (4.) 7 (96.) 3 (36.4) 23 (344.4) 5 (42.) (68.) 9 (252.) 4 (392.) 57 (439.6) (238.) (38.) 65 (462.) 72 (48.6) (268.8) 27 (355.6) 8 (54.) 95 (546.) (34.58) 498 (49.44) (363.86) 659 (452.45) (389.87) 7 (479.8) Change in outlet for a psig. psig. psig.2 psig.2 psig.4 psig (.69 Bar) inlet change Increase in outlet pressure.2 psig.5 psig.6 psig.9 psig.2 psig required for no flow Do not use this orifice size at this inlet pressure B38 Commercial & Industrial Regulator - psig (69 mbar) Capacity Table (2% absolute Droop) - Models IMN, IMR, IMRV Set Point: psig (69 2 scfh (5.68 m 3 /h) Loading Ring Setting: degrees 2" X 2" NPT Valve Body Blue/White Spring - Part No Mounting Position Inlet Capacities in scfh (m 3 /hr) by Orifice Size Pressure 3/8" /2" 5/8" 3/4" " Psig Bar 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm (2.) 2 (33.6) 2 (56.) 23 (64.4) 33 (92.4) (25.2) 7 (47.6) 26 (72.8) 3 (86.8) 4 (2.) (53.2) 23 (64.4) 4 (2.) 44 (23.2) 58 (62.4) (75.6) 36 (.8) 64 (79.2) 73 (24.4) 9 (252.) (2.4) 63 (76.4) (28.) 5 (322.) 4 (392.) (7.8) 85 (238.) 35 (378.) 5 (42.) 82 (59.6) (2.) 5 (294.) 65 (462.) 8 (54.) (252.) 25 (35.) 85 (58.) 28 (6.4) (288.4) 43 (4.4) 2 (588.) 24 (672.) (326.56) 65 (449.4) (37.9) 755 (49.42) (396.48) 947 (545.6) (439.6) 28 (6.4) (537.6) 265 (742.) Change in outlet for a psig (.69 Bar) inlet change Increase in outlet pressure required for no flow. psig. psig.2 psig.2 psig.4 psig.2 psig.5 psig.6 psig.9 psig.2 psig Do not use this orifice size at this inlet pressure 9

21 B38 Commercial & Industrial Regulator - psig (69 mbar) Typical Performance.6 B38 IM REGULATOR PERFORMANCE PSIG SET POINT Type and Model...B38 IM Inlet Size....2" NPT Orifice Size.../4" x 3/8" Spring...Blue-White Set Point psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE INCHES WATER COLUMN PSIG 2 PSIG 3 PSIG 4 PSIG 5 PSIG 6 PSIG RATE OF FLOW - CUBIC FEET PER HOUR.6 SP. GR. GAS psia - 6 F Relief Characteristic R Model Only B38 IMR RELIEF CURVES - BLOCKED PER ORIFICE PSIG SET POINT Type and Model...B38 IMR Inlet Size...2" NPT Vent Size...2-/2" NPT Set Point psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE PSIG /4 5/8 /2 3/ INLET PRESSURE PSIG 2

22 B38 Commercial & Industrial Regulator - 2 psig (38 mbar) Capacity Table (% absolute Droop) - Models IMN, IMR, IMRV Set Point: 2 psig (38 2 scfh (5.68 m 3 /h) Loading Ring Setting: degrees 2" x 2" NPT Valve Body Silver-Red Spring - Part No Mounting Position Inlet Capacities in scfh (m 3 /hr) by Orifice Size Pressure 3/8" /2" 5/8" 3/4" " Psig Bar 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm (.2) 75 (2.) 8 (22.4) (28.) 6 (44.8) (25.2) 5 (32.2) 4 (39.2) 75 (49.) 3 (84.) (49.) 23 (64.4) 25 (7.) 35 (98.) 5 (4.) (64.4) 35 (98.) 33 (92.4) 52 (45.6) 74 (27.2) (7.) 36 (.8) 6 (68.) 75 (2.) 85 (238.) (.8) 54 (5.2) 6 (68.) 95 (266.) 33 (372.4) (.8) 57 (59.6) 83 (232.4) (28.) 64 (459.2) (4.) 7 (96.) 5 (322.) 4 (392.) (76.4) 85 (238.) 3 (364.) 65 (462.) (27.2) 4 (392.) 63 (456.4) 2 (56.) (239.68) 984 (335.55) (296.8) 5 (42.) (284.76) 425 (395.5) (33.88) 7 (479.8) (378.) 65 (462.) (394.8) 7 (478.8) (476.) 2 (56.) B38 Commercial & Industrial Regulator - 2 psig (38 mbar) Capacity Table (2% absolute Droop) - Models IMN, IMR, IMRV Set Point: 2 psig (38 2 scfh (5.68 m 3 /h) Loading Ring Setting: degrees 2" X 2" NPT Valve Body Silver/Red Spring - Part No Mounting Position Inlet Capacities in scfh (m 3 /hr) by Orifice Size Pressure 3/8" /2" 5/8" 3/4" " Psig Bar 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm (9.6) 5 (32.2) 5 (42.) 9 (53.2) 27 (75.6) (36.4) 2 (56.) 25 (7.) 33 (92.4) 45 (26.) (7.) 36 (.8) 45 (26.) 6 (68.) 73 (24.4) (92.4) 5 (4.) 64 (79.2) 8 (224.) 5 (294.) (6.4) 53 (48.4) 85 (238.) (28.) 2 (336.) (4.) 7 (96.) 95 (266.) 25 (35.) 6 (448.) (48.4) 75 (2.) 5 (322.) 32 (369.6) 93 (54.4) (96.) 92 (257.6) 45 (46.) 6 (448.) (232.4) 2 (33.6) 7 (476.) 2 (56.) (263.2) 5 (42.) 2 (56.) 2 (56.) (34.58) 548 (43.42) (33.6) 6 (448.) (348.4) 695 (474.6) (396.48) 26 (56.68) (392.) 95 (546.) (46.) 97 (55.6) (476.) 2 (56.) Change in outlet for a psig (.69 Bar) inlet change Increase in outlet pressure required for no flow. psig. psig.2 psig.2 psig.5 psig.3 psig.5 psig.7 psig. psig.4 psig Do not use this orifice size at this inlet pressure 2

23 B38 Commercial & Industrial Regulator - 2 psig (38 mbar) Typical Performance 3 B38 IM REGULATOR PERFORMANCE 2 PSIG SET POINT Type and Model...B38 IM Inlet Size....2" NPT Orifice Size.../4" x 3/8" Spring...Silver-Red Set Point 2 psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE INCHES WATER COLUMN PSIG 2 PSIG 3 PSIG 4 PSIG 5 PSIG 6 PSIG RATE OF FLOW - CUBIC FEET PER HOUR.6 SP. GR. GAS psia - 6 F Relief Characteristic R Model Only Type and Model...B38 IMR Inlet Size...2" NPT Vent Size...2-/2" NPT Set Point 2 psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE PSIG B38 IMR RELIEF CURVES - BLOCKED PER ORIFICE 2 PSIG SET POINT 3/4 5/8 /2 3/ VENTED FLOW - C.F.H INLET PRESSURE PSIG 22

24 B38 Commercial & Industrial Regulator - 5 psig (345 mbar) Capacity Table (% absolute Droop) - Models IMN, IMR, IMRV Set Point: 5 psig (345 2 scfh (5.68 m 3 /h) Loading Ring Setting: degrees 2" x 2" NPT Valve Body Red Nested Spring - Part No Mounting Position Inlet Capacities in scfh (m 3 /hr) by Orifice Size Pressure 3/8" /2" 5/8" 3/4" " Psig Bar 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm (2.) (28.) (28.) (28.) 6 (44.8) 5.3 (28.) 5 (32.2) 7 (47.6) 8 (5.4) 2 (56.) (9.6) 3 (36.4) 2 (56.) 23 (64.4) 25 (7.) (33.6) 7 (47.6) 235 (65.8) 25 (7.) 285 (79.8) (42.) 9 (53.2) 25 (7.) 3 (84.) 375 (5.) (47.6) 23 (64.4) 32 (89.6) 4 (2.) (56.) 28 (78.4) 6 (68.) 65 (82.) (84.) 35 (85.4) 7 (96.) 8 (224.) (86.88) 466 (3.85) (84.) 42 (7.6) (.25) 565 (58.2) (25.55) 7552 (2.46) (4.8) 675 (89.) (3.6) 75 (2.) (2.) 3 (36.4) B38 Commercial & Industrial Regulator - 5 psig (345 mbar) Capacity Table (2% absolute Droop) - Models IMN, IMR, IMRV Set Point: 5 psig (345 2 scfh (5.68 m 3 /h) Loading Ring Setting: degrees 2" x 2" NPT Valve Body Red Nested Spring - Part No Mounting Position Inlet Capacities in scfh (m 3 /hr) by Orifice Size Pressure 3/8" /2" 5/8" 3/4" " Psig Bar 9.52 mm 2.7 mm 5.9 mm 9. mm 25.4 mm.69 (3.8) 2 (33.6) 8 (5.4) 8 (5.4) 265 (74.2) (44.8) 85 (5.8) 27 (75.6) 285 (79.8) 35 (98.) (44.8) 2 (58.8) 34 (95.2) 35 (98.) 4 (2.) (58.8) 255 (7.4) 4 (2.) 425 (9.) 275 (77.) (64.4) 26 (72.8) 43 (2.4) 45 (26.) 7 (96.) (75.6) 3 (84.) 45 (26.) 52 (45.6) (7.8) 58 (62.4) 8 (224.) 9 (252.) (4.8) 625 (75.) 5 (294.) (38.) (4.) 78 (28.4) (54.) 84 (235.2) (68.) 88 (246.4) (2.) (28.) (22.2) 6 (324.8) (232.4) 22 (34.6) (294.) 5 (42.) Change in outlet for a psig (.69 Bar) inlet change Increase in outlet pressure required for no flow. psig. psig.2 psig.3 psig.7 psig.8 psig. psig. psig. psig.8 psig Do not use this orifice size at this inlet pressure 23

25 B38 Commercial & Industrial Regulator - 5 psig (345 mbar) Typical Performance 6 B38 IM REGULATOR PERFORMANCE 5 PSIG SET POINT Type and Model...B38 IM Inlet Size....2" NPT Orifice Size.../4" x 3/8" Spring...Blue-White Set Point 5 psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE INCHES WATER COLUMN PSIG 2 PSIG 3 PSIG 4 PSIG 5 PSIG 6 PSIG % Droop 2% Droop RATE OF FLOW - CUBIC FEET PER HOUR.6 SP. GR. GAS psia - 6 F Relief Characteristic R Model Only Type and Model...B38 IMR Inlet Size...2" NPT Vent Size...2-/2" NPT Set Point 5 psig with 4 psig 2 scfh. All test results are reported at a base of 4.7 psia and 6 F. OUTLET PRESSURE PSIG B38 IMR RELIEF CURVES - BLOCKED PER ORIFICE 5 PSIG SET POINT 3/4 5/8 /2 3/ VENTED FLOW - C.F.H INLET PRESSURE PSIG 24

26 Installation A. Make certain all shipping plugs are removed from the inlet, outlet and vent of any regulator before installation. B. When installing the regulator, the inside of the piping and the regulator inlet and outlet are to be clean, free of dirt, pipe dope and other debris to prevent entry into the regulator which could cause loss of pressure control. C. The pipe joint sealant should be applied on the male threads of the pipe. Do not use any pipe joint material on the female threads of the regulator or it could become lodged in the regulator causing possible loss of pressure control. D. Gas must flow through the valve body of the regulator in the same direction as the arrow cast on the body, or the outlet side of the regulator may be overpressured and damaged. E. The diaphragm casing may be mounted in any position relative to the body through a full 36 angle. F. When the regulator is installed OUTDOORS, the vent must always be positioned so that rain, snow, moisture or foreign particles cannot enter the vent opening. It is recommended that the vent be positioned to face downward so as to avoid entry of water or other matter which could interfere with the proper operation of the regulator. The vent should be located away from building eves, window openings, building air intakes and above the expected snow level at the site. The vent opening should be inspected periodically to insure it does not become blocked by foreign material. G. When the regulator is installed INDOORS, the vent must be piped to the outside atmosphere while using the shortest length of pipe, the least number of elbows, and having as large a pipe diameter as the vent size or larger. USING VENT PIPE ANY SIZE SMALLER THAN THE VENT CONNECTION WILL LIMIT THE REGULATOR S INTERNAL RELIEF VALVE CAPACITY. The outlet end of the pipe must be protected from moisture and the entrance of foreign particles. The regulator should be specified by the user with the size vent and pipe threads desired to make the vent pipe connection. START-UP PROCEDURE A. A pressure gauge should be mounted downstream of the regulator to monitor the downstream pressure. B. With the downstream valve closed, slowly open the inlet valve. The outlet pressure should rise to slightly greater than the set-point. C. Be sure there are no leaks and all connections are tight. D. The regulator has been preset at the factory to match specifications given when it was ordered. The outlet pressure may be adjusted by removing the seal cap on top of the spring housing and adjusting the ferrule or screw inside the spring housing using a ratchet with a socket and an extension. With a small amount of gas flowing through the regulator, rotate the ferrule clock-wise to raise the outlet pressure and counter-clockwise to lower the outlet pressure. E. After the desired outlet pressure is achieved, replace the seal cap, recheck for leaks. The regulator is ready for operation. SAFETY NOTES: A. The maximum inlet pressure for this regulator is dependent upon the size of the orifice and model designation. The non-relief models are limited to 6 psig maximum inlet pressure unless addition safety devices are used as outlined in DOT code, OPS, Part 92, section B. When these models are used on liquid petroleum gases, they should be restricted to secondstage pressure reduction in the gaseous phase. SAFETY WARNING: This product, as of the date of manufacture, is designed and tested to conform to all governmental or industry safety standards then existing as may apply to the manufacturer. The purchaser and user of this product are warned that compliance with the manufacturer s instructions and procedures is required in order to avoid the hazards of leaking gas resulting from improper installation, start-up or use of this product, and further, that all area fire control, building codes or other safety regulations established under public laws which regulate or concern the application, installation, operation or general use of this product should be complied with. In order to insure the safe and proper operation of this product, the manufacturer recommends that this product be installed by a qualified installer. 25

27 Loading Ring Adjustment Instructions Tip Function The purpose of the loading ring (Figure ) and deflector ring is to draw gas from the underside of the diaphragm. The objective is to lower pressure under the diaphragm as the spring loses compression. The loss in spring compression occurs as the diaphragm drops to open the valve. Lowering of the pressure under the diaphragm relative to the downstream pressure strokes the valve open, thus delivering more gas to the downstream and effectively raising (or boosting) the pressure. Opening Figure Figure 2 Retention Beads Adjustment The B38 is equipped with a ported metal loading ring (Figure ). It is a heat-treated spring steel stamping with two beads (Figure 2) which fit into a groove on the orifice. The orifice also has a radial notched shoulder into which a tip (Figure 2) on the ring rests. This locks the ring from turning after it has been positioned. After removing the diaphragm case from the valve body, remove the loading ring from the orifice by spreading the loading ring slightly with both thumbs (Figure 3). Insert the loading ring on the orifice with the center of the loading ring opening (Figure ) aligned with the casting seam (Figure 4) on the downstream side. The loading ring is now in the position. The angle between each notch on the Figure 3 Figure 4 B38 orifice is.9. Divide the desired angle (see capacity tables for recommended loading ring position) by.9 and round this number up to the nearest whole number (Example:.4 = notches). This is the required number of notches the loading ring must be turned. The loading ring may be adjusted either clock-wise or counter-clock-wise. Using two thumbs as shown in Figure 3, rotate the loading ring the required number of notches. Replace the diaphragm case, slowly open the upstream valve and check for any leaks. The regulator is now ready for operation. Casting Seam 26

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