For Use With For Use With |
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Flow Measurement Scale Flow Measurement Scale |
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Display Type Display Type |
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 | Scale |
Pipe Size Pipe Size |
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Thread Type Thread Type |
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Fitting Material Fitting Material |
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Mounting Orientation Mounting Orientation |
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Maximum Temperature Maximum Temperature |
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Maximum Pressure Maximum Pressure |
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Overall Height Overall Height |
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For Tube ID For Tube ID |
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Body Material Body Material |
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Direction of Flow Direction of Flow |
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About Flowmeters and Totalizers
Flowmeters measure the rate of flow for a liquid or a gas. Totalizers measure the cumulative flow volume. Flowmeter/totalizers display both the flow rate and the cumulative flow volume.
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About Gas Regulators
More
Flowmeters for Oxygen
Calibrated, cleaned, and bagged for oxygen service, these flowmeters are commonly used for welding. They install directly in your line. All have a flow-control knob that lets you open and close the valve at the inlet to adjust the flow rate within the range.
| Pipe × Tube Connections | Overall Ht. | Flow Range, lpm | Accuracy | Max. Pressure | Max. Temp., °F | Seal Material | Mounting Orientation | Each | |
Polycarbonate Plastic Body with Brass Fittings and Flow-Control Knob | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Liters per Minute | |||||||||
| 1/8 NPT Female Inlet × Barbed Outlet for 1/4" Tube ID | 7 1/4" | 0.25 to 3.5 | ±10% | 150 psi @ 72° F | 140° | Fluoroelastomer Rubber | Vertical | 0000000 | 000000 |
| 1/8 NPT Female Inlet × Barbed Outlet for 1/4" Tube ID | 7 1/4" | 0.5 to 8 | ±10% | 150 psi @ 72° F | 140° | Fluoroelastomer Rubber | Vertical | 0000000 | 00000 |
| 1/8 NPT Female Inlet × Barbed Outlet for 1/4" Tube ID | 7 1/4" | 0.5 to 15 | ±10% | 150 psi @ 72° F | 140° | Fluoroelastomer Rubber | Vertical | 0000000 | 00000 |
Tank-Mount Pressure-Regulating
Valves for Air and Inert Gas
- For Use With: See Table
- Temperature Range: -20° to 120° F
These valves automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves have a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank.
Choose a valve with a maximum outlet pressure that’s approximately twice your application’s normal operating pressure. Your operating pressure should never exceed 75% of the valve’s maximum outlet pressure.
Single-stage valves reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank. They’re best for applications where a constant outlet pressure isn’t critical.
Two-stage valves progressively reduce pressure over two steps for more consistent outlet pressure at all times. They’re often used in applications that require a constant outlet pressure regardless of the tank level.
Valves with a brass body have a longer service life than valves with a brass and steel body.
Valves with a stainless steel diaphragm can withstand harsh environments.
Inlet | Outlet | Material | ||||||||||
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| CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Location | Thread Direction | Pressure Range, psi | Pressure Adjustment Method | Body | Seal | Diaphragm | Each | |
For Use With Oxygen | ||||||||||||
9/16"-18 UNF Male Outlet × NGO Female Inlet | ||||||||||||
| CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 125 | T-Handle | Brass | PTFE | Rubber | 0000000 | 0000000 |
| CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 125 | T-Handle | Brass | PTFE | Stainless Steel | 0000000 | 000000 |
| CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 145 | Knob | Brass/Steel | PTFE | Rubber | 0000000 | 000000 |
| CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 200 | T-Handle | Brass | PTFE | Rubber | 000000 | 000000 |
Inlet | Outlet | Material | ||||||||||
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| CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Location | Thread Direction | Pressure Range, psi | Pressure Adjustment Method | Body | Seal | Diaphragm | Each | |
Oxygen | ||||||||||||
1/4 NPT Female Outlet × NGO Female Inlet | ||||||||||||
| CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 250 | T-Handle | Brass | PTFE | Stainless Steel | 0000000 | 0000000 |
9/16"-18 UNF Male Outlet × NGO Female Inlet | ||||||||||||
| CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 125 | T-Handle | Brass | PTFE | Stainless Steel | 0000000 | 000000 |
| CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 125 | T-Handle | Brass/Steel | PTFE | Rubber | 000000 | 000000 |
Tank-Mount High-Pressure-Regulating
Valves for Air and Inert Gas
- For Use With: See Table
- Temperature Range: -20° to 120° F
Often used for pressure-vessel testing and other high-pressure applications, these valves can handle at least seven times the outlet pressure of standard tank-mount pressure-regulating valves. They automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Outlet fittings are Swagelok® for a leak-free seal around hard metal tubing in high-pressure lines. Also known as instrumentation fittings, Swagelok® fittings are compatible with Parker A-Lok, Gyrolok, Bilok, and Tylok fittings. Valves have a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank. They are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank.
Choose a valve with a maximum outlet pressure that’s approximately twice your application’s normal operating pressure. Your operating pressure should never exceed 75% of the valve’s maximum outlet pressure.
Inlet | Outlet | Material | ||||||||||||
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| CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Stage | For Tube OD | Location | Pressure Range, psi | Pressure Adjustment Method | Shape | Body | Seal | Diaphragm | Each | |
NGO Female Inlet × Swagelok® Female Outlet | ||||||||||||||
| CGA 540 | Side | Right Hand | 0 to 4,000 | Single | 1/4" | Side | 0 to 1,500 | Knob | Straight | Brass | PCTFE | Neoprene | 0000000 | 0000000 |
| CGA 540 | Side | Right Hand | 0 to 4,000 | Single | 1/4" | Side | 0 to 2,500 | Knob | Straight | Brass | PCTFE | Neoprene | 0000000 | 000000 |
Tank-Mount Pressure-Regulating
Valves for Cryogenic Liquids
- For Use With: See Table
- Temperature Range: -20° to 120° F
Automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. These valves have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves come with a gauge to monitor outlet pressure. They are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank.
Choose a valve with a maximum outlet pressure that’s approximately twice your application’s normal operating pressure. Your operating pressure should never exceed 75% of the valve’s maximum outlet pressure.
Inlet | Outlet | ||||||||||
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| For Use With | CGA Number | Location | Thread Direction | Stage | Thread Size | Location | Thread Direction | Pressure Range, psi | Pressure Adjustment Method | Each | |
UNF Male Outlet × NGO Female Inlet | |||||||||||
Brass Body—Stainless Steel Diaphragm and PTFE Seal | |||||||||||
| Liquid Oxygen | CGA 540 | Side | Right Hand | Single | 9/16"-18 | Bottom | Right Hand | 0 to 125 | T-Handle | 0000000 | 0000000 |