The 04 Service Regulator is designed to handle a variety of small loads. Use the 04 for industrial or commercial applications. This regulator can also be used for standard residential services: boilers, burners, furnaces/ovens, unit heaters, gas engines, and other applications. Although most 04 installations are for natural gas, it can be used for air, dry CO, nitrogen, propane, or butane. Simple design and rugged construction provide an ideal combination of economy, dependability, and excellent performance. The 04 Service Regulator is available in many sizes and is capable of managing various inlet and outlet pressures. 4 Orifice Pressure Orifice Pressure Angle Body Models: 04-90, 04-9, 04-9 x x x An Invensys Company MAXIMUM INLET PRESSURES Red, Blue, Green & Orange Springs 0 psi 0 psi /6 0 psi Black Spring /6 psi Installation and Start-Up psi psi /6 psi /6 psi Straight Through Body Models: 04-, 04-8, 04-8 x x / / x / x x x psi psi Remove the shipping plugs from both the regulator inlet and outlet connections and from vent on -90 and - models. Make certain that the inside of the piping and the regulator inlet and outlet connections are clean they must be free of dirt, pipe dope and other debris. Use pipe joint material only on the male threads of the pipe being connected to the regulator. Do not use pipe joint material on the female threads of the regulator. Install the regulator in the line. Make certain that the gas flow through the regulator is in the direction as indicated by the arrow on the regulator body. The regulator may be installed in any position: upright, upside down, vertical piping, diagonal piping, etc. The diaphragm case assembly may be rotated by removing four screws () to various positions in relation to the body. The diaphragm case vent must be positioned to protect against flooding, drain water, ice formation, traffic, tampering, etc. The vent must be protected against nest-building animals, bees, insects, etc., to prevent vent blockage and minimize the chances for foreign material from collecting in the vent side of the regulator Regulator Installation and Maintenance Instructions 04 Service Regulator 6 7 8 diaphragm. If required, the upper diaphragm case may be rotated by removing the upper to lower case flange screws and rotating the upper diaphragm case to the desired position. Reinstall the diaphragm flange screws and tighten to hold the upper diaphragm case in position and reseal. CAUTION Turn the gas on very slowly. RM-00 Rev. 9 Turn gas on very slowly. If an outlet stop valve is used, it should be opened first. Do not overload the diaphragm with a sudden surge of inlet pressure. Monitor the outlet pressure during start-up to prevent an outlet pressure overload. Make certain that there are no leaks and that all connections are tight. Adjust outlet pressure (set-point) by removing cap (4) and turning adjustment spring button (). Turn clockwise to increase and counter-clockwise to decrease outlet pressure. Only adjust when gas is flowing through regulator. CAUTION It is the user s responsibility to assure that all regulator vents and/or vent lines exhaust to a non-hazardous location away from ANY POTENTIAL sources of ignition. Where vent lines are used, it is the user s responsibility to assure that each regulator is individually vented and that common vent lines ARE NOT used. The vent connection is an escape path for flammable gas and it must be located and/or piped so that potential discharge occurs in a safe area away from buildings, open flames, collection areas, arcing devices, etc. Regulators that are installed indoors or in a nonvented area must be vented to the outside. Simply run vent piping from the regulator vent connection to a non-hazardous location on the outside, away from any potential sources of ignition. The vent piping must be connection size or larger and piped to a safe area. The vent discharge must be protected against the potentials outlined in instructions #4, #8, and #9. For regulators equipped with internal relief valves (IRV), (models 04-9 and 04-8), vent piping must be vent connection size or larger. This will assure that the vent piping will be large enough to be able to vent all of the internal relief valve discharge to atmosphere without excessive back pressure that would result in excessive pressure increase in the regulator. The outlet of the vent piping must allow for the free and unobstructed passage of air and gas and must be protected against the potentials listed in instructions #4, #8 and #9. Copyright 999, Equimeter Incorporated
9 For outdoor installations, it is recommended that the regulator be installed so that the regulator vent faces downward to avoid the potential for water or other foreign matter entering the regulator and interfering with the proper operation of the regulator. CAUTION Regulators are pressure control devices with numerous moving parts subject to wear that is dependent upon particular operating conditions. To assure continuous satisfactory operation, a periodic inspection schedule must be adhered to with the frequency of inspection determined by the severity of service and applicable laws and regulations. Servicing For access to valve (0) and orifice (8), remove screws () and remove diaphragm case assembly from body. Orifice (8) unscrews from body. When removing and replacing the orifice, be careful to use a hex socket wrench that is in good condition. This socket must be sharp, free of wear and not rounded. When replacing orifice (8), tighten to 0 to ft.-lbs. of torque. Use a moderate amount of sealant, such as Best- O-Life or Rector Seal #. To replace diaphragm assembly, remove spring, remove flange screws (7), and remove top diaphragm case (6) or (6a). Make certain all parts are reassembled in their correct order and all screws and joints are tightened evenly and firmly, to to 6 ft.-lbs. of torque. Make certain Tetraseal () is in position. Upon completing reassembly, make certain that the regulator is free of leaks. Over Pressurization Protection Protection must be provided for the downstream piping system and the regulator s low pressure chambers to assure against the potential over-pressurization due to a regulator malfunction or a failure of the regulator to lock-up. The allowable over-pressurization is the lowest of the maximum pressures permitted by federal codes, state codes, Equimeter Bulletin RDS-498, or other applicable standards. The method of providing overpressure protection could be a relief valve, a monitor regulator, a shut-off device or any similar device. Temperature Limits The 04 Service Regulator can be used for flowing temperatures from -0 F. to 0 F. Buried Service The 04 Service Regulator is not recommended for buried service. Condensed Parts List ILL. PART NO. DESCRIPTION NUMBER Hex Washer Hd., Indented, Screw, -0 x 909 Tetraseal (or O-Ring) x 7 /6 9076 4 Seal Cap 4-08-00-0 Adjustment Spring Button 4-08-009-00 6 SpringSee Table 7 Fil. Hd. Stl. Mach. Screw, #0-4 x / 997 8 Orifice, aluminum 4-08-0-8 Orifice, /6 aluminum 4-08-0-7 Orifice, aluminum 4-08-0-6 Orifice, /6 aluminum 4-08-0- Orifice, aluminum 4-08-0-4 9 Deflector 4-08-078-00 0 Valve & Stem Assembly 4-08--0 Diaphragm Assembly with Internal Relief Valve (IRV)use with Ill. No. 6 Top Diaphragm Case Only 4-08-0-0 a Standard Diaphragm Assembly use with either 6 or 6a Top Diaphragm Case 4-08-0-00 6 Top Diaphragm Case with vent and vent flapper valve 4-08-0-00 6a Top Diaphragm Case with vent 4-08-00-0 Spring Ranges Outlet Pressure Ranges / to 6 / w.c. to 8 / w.c. 6 to 4 w.c. to 8 w.c. psi to psi Spring Color Red Blue Green Orange Black Model Type Vent Pipe No. Size Sizes Spring Part Number 4-08-0-00 4-08-0-0 4-08-0-0 4-08-0-0 4-08-0-06 Body 04-90 Standard Regulator 04-9 Standard Regulator & Angle 04-9 Regulator with Internal Relief (IR) 04- Standard Regulator 04-8 Standard Regulator, /, Straight 04-8 Regulator with & Through Internal Relief (IRV)
Model 04-9 x x x Model 04-8 x x x
Model 04-90 x x x Model 04-9 x x x 4
Model 04-8 x x x Model 04- x x x
04 Service Regulator Capacity Table CAPACITY* in SCFH Natural Gas (0.6 specific gravity4.6 psia F) PIPE SIZE (Inlet & Outlet) NPT x x / / x / / x x / x x x Inlet Pressure (psi) / 0 0 00 / 0 0 00 / 0 0 00 / 0 0 00 /6 /6 /6 /6 00 7 00 0 00 0 00 0 0 0 70 00 0 0 70 00 0 70 00 00 00 0 7 0 0 00 00 0 00 Outlet Pressure Range* / w.c. to 8 w.c. 0 70 0 90 Orifice Size *Capacities are based on maximum outlet pressure variations as follows: RED and BLUE Springs w.c. droop or w.c. boost ( w.c. or + w.c.) GREEN Spring w.c. droop ( w.c.) ORANGE Spring w.c. droop ( w.c.) BLACK Spring0% droop / psi, psi and psi Inlet Pressures apply only to RED and BLUE Springs. Last capacity figure in each column indicates maximum allowable inlet pressure (except for emergency conditions). 0 0 70 70 0 00 0 0 0 00 90 00 0 00 0 70 90 0 0 70 Outlet Pressure Range* psi to psi (Black Spring) Orifice Size 0 70 000 00 00 00 000 0 000 0 0 70 0 000 000 NOTE: The above performance data is based on normal testing at 70 F flowing temperature. Changes in performance can occur at extreme low flowing temperatures. 6
Maximum Emergency Pressure The maximum pressure the regulator inlet may be subjected to under abnormal conditions without causing damage to the regulator is the maximum inlet pressure +0 psi. The maximum pressure the diaphragm may be subjected to without causing damage to the internal parts of the regulator is the set-point + psi (set-point is defined as the outlet pressure a regulator is adjusted to deliver). If either of the above pressure limits are exceeded, the regulator must be taken out of service and inspected. Damaged or otherwise unsatisfactory parts must be repaired or replaced. The maximum pressure that can be safely contained by the diaphragm case is 0 psi (safely contained means no leakage as well as no bursting). Before using any of the above data, make sure this entire section is clearly understood. Orifice Maximum Inlet Pressure Size For Full Capacity Relief A B 6 psig 7 psig /6 9 psig 4 psig psig 4 psig /6 4 psig psig psig 8 psig AOutlet pressure will not exceed psi. BOutlet pressure will not exceed psi. NOTE: Above data based on - 8 / w.c. (Blue) spring Capacities FULL OPEN CAPACITY Use the following formula for the full open capacity of 04 regulators:. Q = K P0 (P P0)...(for <.894) KP P. Q =...(for >.894) P0 Q = maximum capacity of the regulator (in SCFH of 0.6 specific gravity natural gas) K = the K factor, the regulator constant (from the table below) P= absolute inlet pressure (psia) P0= absolute outlet pressure (psia) P P0 Typical Internal Relief Valve (IRV) Performance Curves Other Gases The 04 Service Regulator is mainly used on natural gas services; however, this regulator will perform equally as well on other gases. When using the 04 Regulator on other gases, the regulator capacities must be adjusted using the following correction factors. Type of Gas Correction Factor Air (specific gravity.0) 0.77 Propane (specific gravity.) 0.6 0 BTU Propane-Air Mixture (specific gravity.0) 0.7 Nitrogen (specific gravity 0.97) 0.79 Dry CO (specific gravity.) 0.6 For other non-corrosive gases use the following formula: Correction Factor = 0. Specific gravity of the gas For use with gases not listed above, please contact your Equimeter representative or Industrial Distributor for recommendations. ORIFICE /6 /6 K 9 06 74 Note: When sizing relief valves for use with 04 regulators, use full open capacity. 7