Needle Valves elgs Standard Needle Valves offer four choices in 316 stainless steel as well as one piece forged carbon plated steel; soft seat and hard seat, angle and globe styles. The Mini Valve offers 2 choices in 316 stainless steel and bar stock plated carbon steel; soft seat and hard seat globe style, T-bar and thumb wheel operation. These valves are suited for instrumentation, process plant use, oil and gas production and general applications where isolation and positive shutoff is a requirement. or applications requiring a positive shutoff, the soft seat style with Delrin seat insert offers a bubble tight seat for leak free operation. or corrosives and caustic applications, the hard seat style offers a metal to metal sealing force to clear obstructions and corrosion. ll valves are deigned to the following standards; NSI 31.1.0 ower iping NSI 11.20 uel Gas iping NSI 31.3 hemical lant etroleum Refinery iping SM Section VII-DIV1 oiler & ressure Vessel ode Thread & al codes include; NSI 2.1 ipe Threads NSI 1.1 Straight Threads SM 16.10 Needle Valves art Matrix V M S S M M G Valve Type Standard Mini lock/leed Design Soft ard ody Material arbon Steel 316 SS Inlet onnection emale Male Outlet onnection emale Male ody attern Globe attern ngle attern onnection Size 18 1/8 NT 14 1/4 NT 38 3/8 NT 12 1/2 NT 34 3/4 NT 01 1 NT Options Graphite - igh Temp N N anel Mount W and Wheel (Mini only) V Viton O-ring, Soft Only low oefficient ( v ) Method of alculating low: The flow coefficient v of a valve is the flow rate of water (gallons/minute) through a fully opened valve, with a pressure drop of 1 psi across the valve. To find the flow of liquid through a valve from the flow coefficient ( v), use the following formula: G To find the flow of gas through a valve, use the following formula: g or noncritical flow less than 1.0 IMORTNT: low coefficients are dependent on both the size of the valve and the valve pattern itself. Marsh v factors give flow information for all sizes and patterns so that the designer is able to provide sufficient flow within the system. belgas.net < 129 >
elgs Metal-to-Metal Needle Valves These 316 stainless steel valves are ideally suited for applications when caustic and corrosive material are being used. ressure ratings to 10,000 psi (70,000 ka). T bar handle Teflon packing Roll-formed stem threads recision-machined stem onnet locking pin prevents elow stem thread packing gland ardened and ground self centering, non-rotating tip Metal-to-Metal seat ressure rating, 10,000 psi (70,000 ka) ody and onnet Material STM 182 316 stainless steel or STM 105 forged single piece steel, plated 10,000 SI (70,000 ka) @ 200 [93 ] 4000 SI (28,000 ka) @ 500 [260 ] ressure/ Optional Graphite (T) Temperature 10,000 SI (70,000 ka) @ 400 204 ] lloy Steel 1500 SI (10,400 ka) @ 850 [460 ] 1500 SI (10,400 ka) @ 1000 [538 ] Two piece molded Te on (T). Metal-to-Metal T bar; or STM 108 lloy Steel onnection National ipe Thread, meeting speci cations of NSI 2.1 Stainless Steel is assivated. lloy Steel has a clear Zinc Dichromate nish. Te on is a registered trademark of Duont. N valves are manufactured of 316 SS. attern M Size NT art Number 316 SST arbon v 1/8 VS--18 V--18 0.40 1/4 VS--14 V--14 0.40 3/8 VS--38 V--38 0.90 1/2 VS--12 V--12 1.10 3/4 VS--34 V--34 2.30 1 VS--01 V--01 3.50 1/4 VS--14 V--14 0.40 1/2 VS--12 V--12 1.20 3/4 x 1/2 VS--3412 V--3412 1.90 1/8 VS--18 V--18 0.70 1/4 VS--14 V--14 0.80 3/8 VS--38 V--38 1.60 1/2 VS--12 V--12 2.20 3/4 VS--34 V--34 2.20 1 VS--01 V--01 2.20 1/4 VS-M-14 V-M-14 0.60 1/2 VS-M-12 V-M-12 1.50 Option Graphite - igh Temp. N anel Mount Suffix N < 130 > belgas.net
elgs Soft- Needle Valves or applications where bubble-tight shutoff of liquids or gases are required. ressure rating to 6,000 psi (42,000 ka). These valves are designed with a replaceable Delrin soft seat. T bar handle Teflon packing Roll-formed stem threads recision-machined stem onnet locking pin prevents elow stem thread packing gland ardened and ground self-centering, non-rotating tip Soft- ubble-tight shutoff of liquids or gases to 6,000 psi (42,000 ka) ody and onnet Material STM 182 or STM 105 forged single piece steel, plated. 6000 SI (42,000 ka) @ 200 [93 ] 4000 SI (28,000 ka) @ 500 [260 ] ressure/ Optional Graphite (T) Temperature 6000 SI (42,000 ka) @ 400 [204 ] lloy Steel 1500 SI (10,400 ka) @ 850 [460 ] 1500 SI (10,400 ka) @ 1000 [538 ] Two piece molded Te on (T) Delrin Soft-. T bar; or STM 108 lloy Steel onnection National ipe Thread, meeting speci cations of NSI 2.1 Stem Retaining Method Stainless Steel is assivated. lloy Steel has a clear Zinc Dichromate nish ll valves feature integral back-seated stem for preventing attern M Option Graphite - igh Temp. N anel Mount Size NT art Number 316 SST arbon v 1/4 VSS--14 VS--14 0.60 1/2 VSS--12 VS--12 0.70 3/4 VSS--34 VS--34 2.35 1 VSS--01 VS--01 2.00 1/4 VSS--14 VS--14 0.60 1/2 VSS--12 VS--12 0.70 1/4 x 1/2 VSS--1412 VS--1412 0.80 1/4 VS-M-14 0.70 1/2 VS-M-12 0.70 Suffix N ssembly onnet is threaded into body and pinned into place Te on is a registered trademark of Duont Delrin is a registered trademark of Duont N valves are manufactured of 316 SS belgas.net < 131 >
Needle Valves atterns and s Metal-to-Metal - or lloy and Double emale and Male/emale Globe attern 1/8 1/4 3/8 1/2 3/4 1 3.39 [86.0] 3.39 [86.0] 3.46 [88.0] 3.62 [92.0] 3.66 [93.0] 4.41 [112.0] 1.18 [30.0] 1.26 [32.0] 1.26 [32.0] 1.69 [43.0] 2.36 [60.0] 2.36 [60.0] 2.68 [68.0] 2.68 [68.0] 2.68 [68.0] 3.15 [80.0] M 2.99 [76.0] 3.50 [89.0] 3.50 [89.0] 4.13 [105.0] 1.12 [28.5] 1.12 [28.5] 1.26 [32.0] 1.50 [38.0] 1.57 [40.0] 1.77 [45.0] Ori ce 0.17 [4.2] 0.17 [4.2] 0.25 [6.4] 0.28 [7.0] 0.35 [9.0] 0.47 [12.0] M MX ON and M Double emale and Male/emale ngle attern 1/8 1/4 3/8 1/2 3/4 1 3.39 [86.0] 3.39 [86.0] 3.39 [86.0] 3.62 [92.0] 3.62 [92.0] 4.41 [112.0] 1.65 [42.0] 1.65 [42.0] 1.65 [42.0] 1.97 [50.0] 1.97 [50.0] 2.36 [60.0] 1.10 [28.0] 1.10 [28.0] 1.10 [28.0] 1.26 [32.0] 1.42 [36.0] 1.81 [46.0] 1.65 [42.0] 1.65 [42.0] 1.65 [42.0] 1.97 [50.0] 1.97 [50.0] 2.36 [60.0] Ori ce 0.17 [4.2] 0.17 [4.2] 0.25 [6.4] 0.28 [7.0] 0.35 [9.0] 0.47 [12.0] MX ON Soft- - or lloy M and Double emale and Male/emale Globe attern 1/4 1/2 1/4 x 1/2 1 3.39 [86.0] 3.62 [92.0] 3.62 [92.0] 4.41 [112.0] 1.18 [30.0] 1.26 [32.0] 1.26 [32.0] 2.36 [60.0] 2.68 [68.0] 3.15 [80.0] M 2.99 [76.0] 3.50 [89.0] 3.50 [89.0] 1.12 [28.5] 1.26 [32.0] 1.50 [38.0] 1.77 [45.0] Ori ce 0.17 [4.2] 0.28 [7.0] 0.28 [7.0] 0.47 [12.0] M MX ON M Male/emale ngle attern 1/4 1/2 3.39 [86.0] 3.62 [92.0] 1.65 [42.0] 1.97 [50.0] 1.10 [28.0] 1.26 [32.0] 1.65 [42.0] 1.97 [50.0] Ori ce 0.17 [4.2] 0.28 [7.0] MX ON M < 132 > belgas.net
elgs lock/leed Needle Valves Ideally used to isolate gauge legs and gauge reading, allow sampling to take place without loss of material and provide extra pressure ports with isolation capabilities and can be used only when needed. T ar Teflon Roll-ormed Stem Threads recision-machined Stem elow Stem Thread Gland ardened and Ground, Self-entering, Non-Rotating Tip arbon Steel or 316 SST ort lug ressure, 10,000 SI (70,000 ka) ody and onnet Material STM 182 or STM 105 forged single piece steel, plated 10,000 SI (70,000 ka) @ 100 [38 ] 4000 SI (28,000 ka) @ 500 [260 ] ressure/ Optional Graphite (T) Temperature 10,000 SI (70,000 ka) @ 400 [204 ] lloy Steel 1500 SI (10,400 ka) @ 850 [460 ] 1500 SI (10,400 ka) @ 1000 [538 ] Two piece molded Te on (T) Metal-to-Metal T ar; or STM 108 lloy Steel onnection National ipe Thread, meeting speci cations of NSI 2.1 Stem Retaining Method Stainless Steel is assivated. lloy Steel has a clear Zinc Dichromate nish ll valves feature integral back-seated stem for preventing attern lock/leed Option Graphite - igh Temp. Size NT art Number 316 SST arbon v 1/2 x 1/2 S--12 --12 0.40 3/4 x 1/2 S--3412 --3412 0.40 Suffix Nominal Size (inches [mm]) 1/2 3/4 x 1/2 3.54 [90.0] 3.54 [90.0] 1.50 [38.0] 1.50 [38.0] 3.74 [95.0] 3.74 [95.0] Ori ce 0.28 [7.0] 0.28 [7.0] ssembly onnet is threaded into body and pinned into place. Te on is a registered trademark of Duont. 1/2 NT OR 3/4 NT MX ON 1/2 NT OT SIDS 1/2 N T belgas.net < 133 >
elgs Miniature Needle Valves Miniature size for applications where space is limited. Ideal for test stand and general equipment. T ar or Thumb Wheel Roll-ormed Stem Threads recision-machined Stem Teflon onnet Locking in revents ccidental Removal Metal-to-Metal and Soft ressure, 6,000 SI (42,000 ka) ody and onnet Material onnet ap (rotective over) ressure/ Temperature STM 479 or STM 108 arstock Steel, lated Low Density olyethylene, Red 6000 SI (42,000 ka) @ 100 [38 ] 4000 SI (28,000 ka) @ 500 [260 ] Molded Te on (T) Metal-to-Metal and Delrin Soft- T ar; / STM 108 lloy Steel / luminum nodized Thumb Wheel onnection National ipe Thread, meeting speci cations of NSI 2.1 Stainless Steel is assivated. lloy Steel has a clear Zinc Stem Retaining Method ssembly Dichromate nish ll valves feature integral back-seated stem for preventing onnet is threaded into body and pinned into place Te on is a registered trademark of Duont. Delrin is a registered trademark of Duont. attern Size NT art Number 316 SST arbon v 1/8 MS--18 M--18 ard 0.25 1/8 MS--18W M--18W ard 0.25 1/4 MS--14 M--14 ard 0.25 1/4 MS--14W M--14W ard 0.25 1/4 MS--14 M--14 ard 0.25 1/4 MS--14W M--14W ard 0.25 1/4 MSS--14 MS--14 Soft 0.25 1/4 MSS--14W MS--14W Soft 0.25 Standard is T-bar 'W' is thumb wheel Nominal Size (inches [mm]) 1/8 1/4 2.44 [62.0] 2.44 [62.0] 0.87 [22.0] 0.87 [22.0] 1.89 [48.0] 1.89 [48.0] Ori ce 0.13 [3.2] 0.13 [3.2] MX ON < 134 > belgas.net