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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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About On/Off Valves
More
About Flow-Adjustment Valves
More
Threaded On/Off Valves for Vacuum
- Valve Type: Ball
- For Use With: Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon
- Seal Material: PTFE Plastic
- Specifications Met: C-UL Listed, UL Listed
The bolted-body design provides strength for a tight seal in vacuum conditions up to 29.9” Hg for applications such as vacuum coating and heat treating, leak testing, and analyzing gases. These valves are standard port, so they slightly restrict flow.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temperature Range, °F | Vacuum Rating, in. of Hg | End-to-End Lg. | Each | |
Brass Body | ||||||||
|---|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | ||||||||
| 1/4 | 11 | 600 psi @ 200° F | 149 psi @ 365° F | -20° to 400° | 29.9 | 2 3/8" | 0000000 | 0000000 |
| 3/8 | 16 | 600 psi @ 200° F | 149 psi @ 365° F | -20° to 400° | 29.9 | 2 3/8" | 0000000 | 000000 |
| 1/2 | 16 | 600 psi @ 200° F | 149 psi @ 365° F | -20° to 400° | 29.9 | 2 3/8" | 0000000 | 000000 |
| 3/4 | 37 | 600 psi @ 200° F | 149 psi @ 365° F | -20° to 400° | 29.9 | 2 9/16" | 0000000 | 000000 |
| 1 | 49 | 600 psi @ 200° F | 149 psi @ 365° F | -20° to 400° | 29.9 | 3 1/16" | 0000000 | 000000 |
| 1 1/4 | 49 | 400 psi @ 100° F | 149 psi @ 365° F | -20° to 400° | 29.9 | 3 7/16" | 0000000 | 000000 |
| 1 1/2 | 100 | 400 psi @ 100° F | 149 psi @ 365° F | -20° to 400° | 29.9 | 3 3/4" | 0000000 | 000000 |
| 2 | 115 | 400 psi @ 100° F | 149 psi @ 365° F | -20° to 400° | 29.9 | 4 1/16" | 0000000 | 000000 |
Threaded Flow-Adjustment Valves for Cryogenic Liquid
- Valve Type: Globe
- For Use With: Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen
- Seal Material: Glass-Filled PTFE Plastic
- Specifications Met: CGA G-4.1
Designed to withstand the extreme cold of liquid argon, liquid carbon dioxide, and liquid nitrogen, these valves are cleaned and bagged to meet CGA G-4.1 standards for oxygen service. They gradually open and close with multiple turns of the wheel handle to adjust and regulate flow. All have a rising stem that lifts as the valve opens and lowers as the valve closes to provide a visual indication of whether flow is on or off.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | End-to-End Lg. | Overall Ht. | Stem Type | Each | |
Bronze Body | ||||||||
|---|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | ||||||||
| 1/2 | 3.3 | 600 psi @ 150° F | -325° to 150° | 2 5/8" | 8 5/16" | Rising | 00000000 | 0000000 |
| 3/4 | 6.3 | 400 psi @ 150° F | -325° to 150° | 3 3/16" | 10" | Rising | 00000000 | 000000 |
| 1 | 10 | 600 psi @ 150° F | -325° to 150° | 3 3/4" | 11 13/16" | Rising | 00000000 | 000000 |
| 1 1/2 | 26 | 400 psi @ 150° F | -325° to 150° | 4 3/4" | 16 1/2" | Rising | 00000000 | 000000 |
| 2 | 45 | 600 psi @ 150° F | -325° to 150° | 5 3/4" | 16 3/4" | Rising | 00000000 | 00000000 |
Stainless Steel Body | ||||||||
NPT Female × NPT Female | ||||||||
| 1/2 | 5 | 720 psi @ 150° F | -325° to 150° | 3 1/16" | 11 13/16" | Rising | 00000000 | 000000 |
| 1 | 14 | 720 psi @ 150° F | -325° to 150° | 3 15/16" | 12 1/16" | Rising | 00000000 | 000000 |
| 1 1/2 | 53 | 720 psi @ 150° F | -325° to 150° | 5" | 12 5/16" | Rising | 00000000 | 000000 |
| 2 | 53 | 720 psi @ 150° F | -325° to 150° | 5 15/16" | 12 5/8" | Rising | 00000000 | 000000 |
Compact Threaded Flow-Adjustment Valves for Cryogenic Liquid
- Valve Type: Globe
- For Use With: Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen
- Specifications Met: CGA G-4.1
Often used with portable cryogenic cylinders, these valves are a third of the height of other valves for cryogenic liquid. They are designed to withstand the extreme cold of liquid argon, liquid carbon dioxide, and liquid nitrogen; all are cleaned and bagged to meet CGA G-4.1 standards for oxygen service. These valves gradually open and close with multiple turns of the wheel handle to adjust and regulate flow. They have a nonrising stem that stays in the same position whether the valve is open or closed.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | End-to-End Lg. | Stem Type | Each | |
Brass Body | |||||||
|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | |||||||
| 1/4 | 1 | 600 psi @ 165° F | -320° to 165° | 2 1/2" | Nonrising | 00000000 | 0000000 |
| 3/8 | 1.8 | 600 psi @ 165° F | -320° to 165° | 2 1/2" | Nonrising | 00000000 | 000000 |
| 1/2 | 1.8 | 600 psi @ 165° F | -320° to 165° | 2 1/2" | Nonrising | 00000000 | 000000 |
Cleaned and Bagged Pressure-Regulating Valves for Air and Inert Gas
- For Use With: Nitrogen, Oxygen, Argon, Helium, Neon
- Temperature Range: -40° to 165° F
Often used for oxygen service and other high-purity applications, these valves are cleaned and bagged to meet CGA G-4.1 standards to prevent contamination. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have two gauge ports. They are no-bleed style, so they keep process gases contained in the valve.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | Gauge Port | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | Pipe Size | Location | End-to-End Lg. | Choose an Outlet Pressure Range, psi | Each | |
NPT Female | ||||||||||
Brass Body—Buna-N Diaphragm and Fluoroelastomer Seal | ||||||||||
| 1/2 | Side | 500 | 1/2 | Side | 1/4 | Side | 2 13/16" | 00000000 | 0000000 | |
| 3/4 | Side | 500 | 3/4 | Side | 1/4 | Side | 3 5/16" | 00000000 | 000000 | |
| 1 | Side | 500 | 1 | Side | 1/4 | Side | 3 5/16" | 00000000 | 000000 | |
Cleaned and Bagged Panel-Mount Pressure-Regulating Valves for Air and Inert Gas
- For Use With: Air, Nitrogen, Argon, Helium
- Temperature Range: -40° to 160° F
Commonly used for oxygen service and other high-purity applications, these valves come cleaned and bagged to prevent contamination. All automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have threads below the adjustment knob and come with a panel-mount nut. They can also be surface mounted. All have two gauge ports. Body is 316 stainless steel for exceptional corrosion resistance. Valves are no-bleed style, so they keep process gases contained in the valve.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | Gauge Port | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | Pipe Size | Connection | End-to-End Lg. | Panel Cutout Dia. | Choose an Outlet Pressure Range, psi | Each | |
NPT Female | |||||||||||
316 Stainless Steel Body—316 Stainless Steel Diaphragm and PCTFE Seal | |||||||||||
| 1/4 | Side | 3,500 | 1/4 | Side | 1/4 | NPT Female | 2" | 1.42" | 0000000 | 0000000 | |
316 Stainless Steel Body—Nickel Alloy Diaphragm and PCTFE Seal | |||||||||||
| 1/2 | Side | 300 | 1/2 | Side | 1/4 | NPT Female | 2 1/2" | 1.56" | 0000000 | 000000 | |