Gas Pressure Regulators | McMaster-Carr

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About Air Preparation

About Gas Regulators

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.

For Use With Argon, Helium, and Nitrogen

Female Outlet × Female Inlet Elbow With T-Handle

Female Outlet × Male Inlet Elbow With T-Handle And Relief Valve

Female Outlet × Male Inlet Elbow With T-Handle

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	For Tube OD	Location	Pressure Range, psi	Pressure Adjustment Method	Shape	Body	Seal		Each
NGO Female Inlet × Swagelok® Female Outlet
CGA 677	Side	Left Hand	0 to 7,500	Single	1/4"	Bottom	300 to 4,500	T-Handle	90° Elbow	Brass	PCTFE	0000000	000000000
NGO Male Inlet × Swagelok® Female Outlet
CGA 580	Side	Right Hand	0 to 4,000	Single	1/4"	Bottom	100 to 1,500	T-Handle	90° Elbow	Brass	PCTFE	0000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Single	1/4"	Bottom	200 to 3,000	T-Handle	90° Elbow	Brass	PCTFE	0000000	000000

For Use With Oxygen

Female Outlet × Female Inlet Straight With Knob

Inlet					Outlet					Material
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

For Use With Air

Female Outlet × Male Inlet Straight With Knob

Inlet					Outlet					Material
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
Male Inlet ×
Swagelok®
Female Outlet
CGA 590	Side	Left Hand	0 to 4,000	Single	1/4"	Side	0 to 1,500	Knob	Straight	Brass	PCTFE	Polyurethane	0000000	0000000
CGA 590	Side	Left Hand	0 to 4,000	Single	1/4"	Side	0 to 2,500	Knob	Straight	Brass	PCTFE	Polyurethane	0000000	000000

For Use With Breathable Air

Female Outlet × Female Inlet Straight With Knob

Inlet					Outlet					Material
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 346	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 1,500	Knob	Straight	Brass	PCTFE	Polyurethane	0000000	0000000
CGA 346	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 2,500	Knob	Straight	Brass	PCTFE	Polyurethane	0000000	000000

Tank-Mount Pressure-Regulating Valves with Flowmeter for Inert Gas

For Use With: See Table
Temperature Range: -20° to 120° F

Commonly used in TIG welding where gas flow/coverage is a concern, these valves measure the gas flow rate in addition to regulating pressure. 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. Valves have a gauge to monitor the outlet flow rate and a second 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.

For Use With Argon

Female Outlet × Male Inlet

Female Outlet × Male Inlet With Hose

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Flow Gauge Included	Body	Seal	Diaphragm	Includes		Each
UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	__	0000000	0000000
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	10-ft. long, 3/16" dia. hose with 5/8"-18 male fittings on both ends	0000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100	Yes	Brass	PTFE	Neoprene	__	0000000	000000

For Use With Carbon Dioxide

Female Outlet × Female Inlet

Female Outlet × Female Inlet With Hose

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Flow Gauge Included	Body	Seal	Diaphragm	Includes		Each
UNF Female Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	__	0000000	0000000
CGA 320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	10-ft. long, 3/16" dia. hose with 5/8"-18 male fittings on both ends	0000000	000000
CGA 320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100	Yes	Brass	PTFE	Neoprene	__	0000000	000000

Easy-Read Tank-Mount Pressure-Regulating Valves with Flowmeter for Inert Gas

Male Inlet × Female Outlet With One Flowmeter

For Use With: See Table

Flowmeters let you see the gas flow rate from a distance. 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. They have a gauge for monitoring inlet pressure from the tank.

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.

Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

Adapters (sold separately) change 5/8"-18 outlets to 9/16"-18 male connections, and vice versa.

For Use With Argon

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Number of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 70	1	Brass	PTFE	Neoprene	00000000	0000000

Optional Adapter

00000000

Each

000000

Panel-Mount High-Pressure-Regulating Valves for Air and Inert Gas

For Use With: Air, Nitrogen, Argon, Helium
Temperature Range: -40° to 165° F

Withstand inlet pressures up to 3,500 psi. These valves 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. All have two gauge ports. An internal strainer traps debris.

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.	Panel Cutout Dia.	Specifications Met	Choose an Outlet Pressure Range, psi		Each
NPT Female
Brass Body—316 Stainless Steel Diaphragm and PTFE Seal
1/4	Side	3,500	1/4	Side	1/4	Side	2"	1 3/8"	ASME B31.3	0 to 25, 0 to 50, 0 to 100, 0 to 250, 0 to 500	0000000	0000000

Panel-Mount Ultra-High-Pressure-Regulating Valves for Air and Inert Gas

For Use With: Air, Nitrogen, Argon, Helium
Temperature Range: -40° to 165° F

These valves are rated for inlet pressures up to 6,000 psi. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Threads below the adjustment knob and an included mounting bracket let you install these valves in instrument panels. They have two gauge ports. An internal strainer traps debris.

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.	Panel Cutout Dia.	Specifications Met	Choose an Outlet Pressure Range, psi		Each
NPT Female
Brass Body—Polyimide Seal
1/4	Side	6,000	1/4	Side	1/4	Side	2 1/8"	2 1/4"	ASME B31.3	0 to 500, 0 to 800, 10 to 1,500, 15 to 2,500, 25 to 4,000, 50 to 6,000	0000000	0000000

Corrosion-Resistant Panel-Mount Ultra-High-Pressure-Regulating
Valves for Water, Air, and Inert Gas

For Use With: Water, Air, Inert Gas
Temperature Range: 32° to 165° F

To regulate inlet pressures up to 6,000 psi in wet conditions and harsh environments, these valves have a 316 stainless steel body for exceptional corrosion resistance. They 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. All have two gauge ports. They are no-bleed style, so they keep the 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.	Panel Cutout Dia.	Choose an Outlet Pressure Range, psi		Each
NPT Female
316 Stainless Steel Body—PTFE Seal
1/4	Side	6,000	1/4	Side	1/4	Side	2"	1.37"	0 to 1,500, 0 to 2,500	0000000	0000000

Clean Room Panel-Mount Pressure-Regulating Valves for Air and Inert Gas

For Use With:
Relieving: Air, Nitrogen
Nonrelieving: Air, Argon, Carbon Dioxide, Nitrogen
Temperature Range: 32° to 140° F

Maintain contaminant-free standards in clean room environments. These valves come cleaned and bagged to Fed. Spec. Class 100 and ISO Class 5 clean room standards and have a 316 stainless steel body with a smooth finish to resist dust collection. They automatically reduce a high, variable inlet pressure to a lower, stable output pressure. Valves have threads below the adjustment knob and come with a panel-mount nut. Adjust the outlet pressure within the range.

Gauge ports let you attach a pressure gauge.

Nonrelieving valves do not exhaust excess downstream pressure.

For technical drawings and 3-D models, click on a part number.

Nonrelieving

Regulators
Inlet			Outlet			Gauge Port							Mounting Brackets
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pipe Size	Location	End-to-End Lg.	Panel Cutout Dia.	Environmental Rating		Each		Each
NPT Female
316 Stainless Steel Body—Fluoroelastomer Diaphragm and Seal
1/8	Side	145	1/8	Side	7 to 102	1/4	Side	1.700"	1.2"	Fed. Std. Class 100, ISO Class 5	0000000	0000000	0000000	00000
1/4	Side	145	1/4	Side	7 to 102	1/4	Side	1.700"	1.2"	Fed. Std. Class 100, ISO Class 5	0000000	000000	0000000	0000
1/4	Side	145	1/4	Side	7 to 102	1/4	Side	2.280"	1.44"	Fed. Std. Class 100, ISO Class 5	0000000	000000	0000000	00000
3/8	Side	145	3/8	Side	7 to 102	1/4	Side	2.280"	1.44"	Fed. Std. Class 100, ISO Class 5	0000000	000000	0000000	00000
1/2	Side	145	1/2	Side	7 to 102	1/4	Side	2.280"	1.44"	Fed. Std. Class 100, ISO Class 5	0000000	000000	0000000	00000

Pressure Gauge

0000000

Each

000000

Miniature Panel-Mount Pressure-Regulating Valves for Water, Air, and Inert Gas

For Use With: Water, Air, Inert Gas
Temperature Range: 32° to 180° F

Our smallest pressure-regulating valve automatically reduces a high, variable inlet pressure to a lower, stable outlet pressure in tight spaces where other valves can't fit. Adjust the outlet pressure within the range. Valve has threads below the adjustment screw and comes with a panel-mount nut. Body is nickel-plated brass for good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Inlet			Outlet
Thread Size	Location	Max. Pressure, psi	Thread Size	Location	Pressure Range, psi	Port-to-Port Lg.	Panel Cutout Dia.		Each
UNF Female
Nickel-Plated Brass Body—Buna-N Seal
10-32	Bottom	80	10-32	Side	5 to 80	3/8"	1/2"	0000000	000000

Extended-Life Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

For Use With: Water, Oil, Air, Inert Gas
Temperature Range: 32° to 180° F

For a longer service life than brass and cast iron valves, these have a durable bronze body. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All valves have an internal strainer to trap debris.

For technical drawings and 3-D models, click on a part number.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Choose an Outlet Pressure Range, psi		Each
NPT Female
Bronze Body—Buna-N Diaphragm and Seal
1/4	Side	400	1/4	Side	3"	2 to 25, 20 to 60, 20 to 100, 50 to 150	00000000	0000000
3/8	Side	400	3/8	Side	3 7/8"	2 to 30, 20 to 70, 40 to 110, 90 to 150	00000000	000000
1/2	Side	400	1/2	Side	4 1/2"	2 to 30, 10 to 50, 30 to 125, 50 to 150	00000000	000000
3/4	Side	400	3/4	Side	5 1/8"	2 to 20, 10 to 35, 30 to 75, 50 to 110, 105 to 150	00000000	000000
1	Side	400	1	Side	5 7/8"	2 to 20, 10 to 45, 20 to 60, 55 to 100, 90 to 150	00000000	000000
1 1/4	Side	400	1 1/4	Side	6 3/4"	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 150	00000000	00000000
1 1/2	Side	400	1 1/2	Side	6 3/4"	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 150	00000000	00000000
2	Side	400	2	Side	9 1/4"	2 to 20, 10 to 60, 20 to 100, 90 to 150	00000000	00000000

Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

Valve With Buna-N Diaphragm

Valve With Buna-N
Diaphragm And
Gauge Port

Valve With Neoprene Diaphragm

Valve With Neoprene
Diaphragm
And Gauge Port

For Use With: Water, Oil, Air, Inert Gas
Temperature Range: 32° to 180° F

These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

Valves with a neoprene diaphragm have higher flow rates than valves with a Buna-N diaphragm.

Internal strainers trap debris.

Gauge ports let you attach a pressure gauge to monitor outlet pressure.

For technical drawings and 3-D models, click on a part number.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Choose an Outlet Pressure Range, psi		Each
Valve
NPT Female
Brass Body—Buna-N Diaphragm and Seal with Internal Strainer
1/4	Side	250	1/4	Side	2 1/4"	10 to 50, 100 to 180, 2 to 30, 25 to 90, 80 to 120	0000000	0000000
3/8	Side	250	3/8	Side	2 1/4"	10 to 50, 100 to 180, 2 to 30, 25 to 90, 80 to 120	0000000	000000
Brass Body—Neoprene Diaphragm and Buna-N Seal
1/4	Side	400	1/4	Side	2 1/2"	0 to 5, 100 to 250, 2 to 35, 20 to 70, 60 to 125, 75 to 200	0000000	000000
3/8	Side	400	3/8	Side	2 1/2"	0 to 5, 100 to 250, 2 to 35, 20 to 70, 60 to 125, 75 to 200	0000000	000000
1/2	Side	400	1/2	Side	2 7/8"	0 to 5, 100 to 250, 2 to 25, 20 to 60, 40 to 80, 75 to 125	0000000	000000
Valve with 1/4 NPT Gauge Port
NPT Female
Brass Body—Buna-N Diaphragm and Seal with Internal Strainer
1/4	Side	250	1/4	Side	2 1/4"	10 to 50, 100 to 180, 2 to 30, 25 to 90, 80 to 120	0000000	000000
3/8	Side	250	3/8	Side	2 1/4"	10 to 50, 100 to 180, 2 to 30, 25 to 90, 80 to 120	0000000	000000
Brass Body—Neoprene Diaphragm and Buna-N Seal
1/4	Side	400	1/4	Side	2 1/2"	0 to 5, 100 to 250, 2 to 35, 20 to 70, 60 to 125, 75 to 200	0000000	000000
3/8	Side	400	3/8	Side	2 1/2"	0 to 5, 100 to 250, 2 to 35, 20 to 70, 60 to 125, 75 to 200	0000000	000000
1/2	Side	400	1/2	Side	2 7/8"	0 to 5, 100 to 250, 2 to 25, 20 to 60, 40 to 80, 75 to 125	0000000	000000

Clean Room Pressure-Regulating Valves for Water, Air, and Inert Gas

For Use With: Deionized Water, Air, Nitrogen, Oxygen
Temperature Range: 41° to 140° F

To maintain contaminant-free standards in clean room environments, these valves come cleaned and bagged to Fed. Std. Class 100 and ISO Class 5 clean room standards and have a 316 stainless steel body with a smooth finish to resist dust collection. They automatically reduce a high, variable inlet pressure to a lower, stable output pressure. Adjust the outlet pressure within the range. Valves are no-bleed style, so they keep process media contained within the valve.

For technical drawings and 3-D models, click on a part number.

Inlet			Outlet
Thread Size	Location	Max. Pressure, psi	Thread Size	Location	Pressure Range, psi	End-to-End Lg.	Environmental Rating		Each
Metric Female
316 Stainless Steel Body—Fluoroelastomer Diaphragm and 316 Stainless Steel Seal
M5 × 0.8 mm	Side	150	M5 × 0.8 mm	Side	1.4 to 28	1 3/16"	Fed. Std. Class 100, ISO Class 5	00000000	0000000
M5 × 0.8 mm	Side	150	M5 × 0.8 mm	Side	7 to 99	1 3/16"	Fed. Std. Class 100, ISO Class 5	00000000	000000

Corrosion-Resistant Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

For Use With: Water, Oil, Air, Inert Gas
Temperature Range: 32° to 200° F

Often used in wet conditions and harsh environments, these valves have a 316 stainless steel body for excellent corrosion resistance. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

For technical drawings and 3-D models, click on a part number.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Choose an Outlet Pressure Range, psi		Each
NPT Female
316 Stainless Steel Body—Buna-N Diaphragm and Seal
1/2	Side	720	1/2	Side	4 1/2"	2 to 30, 10 to 50, 30 to 125, 50 to 150	0000000	000000000
3/4	Side	720	3/4	Side	5 1/8"	2 to 20, 10 to 35, 30 to 75, 50 to 110, 105 to 150	0000000	00000000
1	Side	720	1	Side	5 7/8"	2 to 20, 10 to 45, 20 to 60, 55 to 100, 90 to 150	0000000	00000000

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"	5 to 55, 40 to 110, 100 to 200, 175 to 300	00000000	0000000
3/4	Side	500	3/4	Side	1/4	Side	3 5/16"	5 to 55, 40 to 110, 100 to 200, 175 to 275	00000000	000000
1	Side	500	1	Side	1/4	Side	3 5/16"	5 to 55, 40 to 110, 100 to 200, 175 to 275	00000000	000000

Miniature Ultra-High-Pressure-Regulating Valves for Water, Air, and Inert Gas

For Use With: Water, Air, Argon
Temperature Range: -15° to 165° F

For extremely high-pressure applications in tight spots, these valves handle the same inlet pressures as other ultra-high-pressure-regulating valves within a smaller footprint. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All have two gauge ports. Body is nickel-plated aluminum for good corrosion resistance. Valves are no-bleed style, so they keep the process gas contained within 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
NPTF Female
Nickel-Plated Aluminum Body—Polyimide Seal
1/4	Side	6,000	1/4	Side	1/4	Side	1 5/8"	0 to 700, 0 to 1,200, 0 to 1,800	0000000	0000000
1/4	Side	6,000	1/4	Side	1/4	Side	1 5/8"	0 to 80, 0 to 140, 0 to 220	0000000	000000

High-Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

For Use With: Water, Oil, Air, Inert Gas
Temperature Range: 32° to 300° F

Withstand more than six times the inlet pressure of standard pressure-regulating valves. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have a 303 stainless steel body for corrosion resistance in harsh environments.

For technical drawings and 3-D models, click on a part number.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Port-to-Port Lg.	Choose an Outlet Pressure Range, psi		Each
NPT Female
303 Stainless Steel Body—PTFE Seal
2	Side	3,000	2	Bottom	3"	100 to 450, 250 to 1,200, 500 to 2,200	0000000	000000000

High-Temperature Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

For Use With: Water, Oil, Air, Inert Gas
Temperature Range: 32° to 550° F

Rated for more than double the temperature of standard pressure-regulating valves, these can withstand temperatures up to 550° F. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves meet ANSI/FCI 70-2 Class IV for tight shut-off (max. leakage rate of 0.01%).

For technical drawings and 3-D models, click on a part number.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Choose an Outlet Pressure Range, psi		Each
NPT Female
Steel Body—316 Stainless Steel Diaphragm and 303 Stainless Steel Seal
1/2	Side	300	1/2	Side	3 5/8"	2 to 23, 10 to 38, 20 to 55, 35 to 160, 95 to 220	00000000	000000000
3/4	Side	300	3/4	Side	3 5/8"	2 to 23, 10 to 38, 20 to 55, 35 to 160, 95 to 220	00000000	00000000
1	Side	300	1	Side	4 3/16"	5 to 20, 10 to 30, 20 to 45, 30 to 95, 60 to 160	00000000	00000000
1 1/2	Side	300	1 1/2	Side	4 13/16"	5 to 20, 10 to 30, 20 to 45, 30 to 95, 60 to 160	00000000	00000000
2	Side	300	2	Side	5 1/2"	5 to 20, 10 to 30, 20 to 45, 30 to 95, 60 to 160	00000000	00000000

Tamper-Resistant Compact Pressure-Regulating Valves for Air and Inert Gas

For Use With: Air, Inert Gas
Max. Temperature: 175° F

Prevent changes to your pressure setting—these valves come set at a nonadjustable outlet pressure. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. All have two gauge ports.

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, psi		Each
NPT Female
Brass Body—Buna-N Diaphragm and Acetal Seal
1/8	Side	400	1/8	Side	1/8	Side	1.480"	5, 10, 15, 20, 70, 80, 95, 100	000000	000000
1/4	Side	400	1/4	Side	1/8	Side	1.480"	5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 100	000000	00000

Pressure-Regulating Valves for Fuel Gases

With Knob

With T-Handle

For Use With: See Table
Temperature Range: See Table

Install these valves directly in gas distribution pipelines for acetylene, hydrogen, or propane. They automatically reduce a high inlet pressure to a lower, stable outlet pressure. Valves have two outlets to fit various pipe configurations and come with a plug to close the unused outlet. The gauge monitors outlet pressure. All valves are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate.

	Inlet			Outlet
For Use With	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Range, psi	Temperature Range, ° F	End-to-End Lg.	Port-to-Port Lg.		Each
NPT Female
Brass Body—Neoprene/Nylon Diaphragm and Neoprene Seal
Acetylene	1/4	Side	350	1/4	Bottom, Side	Knob	0 to 30	-20° to 120°	2.60"	1.32"	0000000	0000000
Brass Body—Stainless Steel Diaphragm and Neoprene Seal
Hydrogen, Propane	1/4	Side	500	1/4	Bottom, Side	T-Handle	0 to 60	0° to 120°	2.40"	1.01"	0000000	000000
Hydrogen, Propane	1/4	Side	500	1/4	Bottom, Side	T-Handle	0 to 200	0° to 120°	2.40"	1.01"	0000000	000000

Sanitary Pressure-Regulating Valves

For Use With: Food and Beverage
Temperature Range: -40° to 120°F
Specifications Met: 3-A Certified 64-00, ANSI/FCI 70-2 Class III, FDA Compliant 21 CFR 177.2600

Regulate air, gas, and liquid pressure on food, beverage, and pharmaceutical lines with these valves—they’re 3-A certified to meet sanitary design standards. Attach them to your line to reduce a high, variable inlet pressure to a lower, stable outlet pressure.

Twist the T-handle on top of the valve to adjust the outlet pressure. When the valve is closed, a seal on the outlet prevents leaks and helps maintain consistent pressure. These valves meet ANSI/FCI 70-2 Class III, which means a maximum of 0.1% of fluid, gas, or air can escape while they are fully closed. The spring and valve mechanism are sealed behind the diaphragm, so contaminants can’t enter. Both the diaphragm and seals hold up to water, detergents, and chemicals. They’re also FDA compliant for direct contact with food.

Made of 316 stainless steel, these valves won’t corrode from frequent washdowns with harsh cleaners. They connect to your line with quick-clamp sanitary fittings, also known as tri-clamp connections, which are easier to remove and sanitize than threaded connections. The polished interior is extremely smooth, so there’s nowhere for bacteria to hide. They’re also self-draining, so liquids drain completely and don’t contaminate your line. Keep these valves open during clean-in-place (CIP) cycles with a locking pin.

For technical drawings and 3-D models, click on a part number.

Inlet				Outlet
For Tube OD	Flange OD	Location	Max. Pressure, psi	For Tube OD	Flange OD	Location	Pressure Adjustment Method	End-to-End Lg.	Choose an Outlet Pressure Range, psi		Each
Quick Clamp
316 Stainless Steel Body—EPDM Diaphragm and EPDM Seal
3/4"	0.984"	Bottom	200	3/4"	0.984"	Side	T-Handle	8 5/8"	15 to 50, 40 to 90	0000000	000000000
1"	1.984"	Bottom	200	1"	1.984"	Side	T-Handle	8 5/8"	5 to 25, 15 to 50, 40 to 90	0000000	00000000
316 Stainless Steel Body—PTFE Plastic Diaphragm and EPDM Seal
1 1/2"	1.984"	Bottom	125	1 1/2"	1.984"	Side	T-Handle	13 3/8"	10 to 25, 15 to 50, 35 to 100	0000000	00000000
2"	2.516"	Bottom	100	2"	2.516"	Side	T-Handle	16 1/8"	10 to 25, 15 to 60	0000000	00000000

Back-Pressure-Regulating Valves for Air and Inert Gas

For Use With: Air, Inert Gas
Temperature Range: 0° to 150° F

Often used to protect equipment running on air compressors, these valves obstruct flow to maintain sufficient operating pressure in your system. If the system pressure exceeds the set pressure, they exhaust through the unthreaded relief port. Adjust the set pressure within the range. Valves have two gauge ports.

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
Aluminum Body—Buna-N Diaphragm and Seal
1/4	Side	250	1/4	Side	1/4	Side	3"	0 to 2, 0 to 10, 0 to 30, 0 to 60, 0 to 150	0000000	0000000
3/8	Side	250	3/8	Side	1/4	Side	3"	0 to 2, 0 to 10, 0 to 30, 0 to 60, 0 to 150	0000000	000000
1/2	Side	250	1/2	Side	1/4	Side	3"	0 to 2, 0 to 10, 0 to 30, 0 to 60, 0 to 150	0000000	000000

Panel-Mount Back-Pressure-Regulating Valves for Air and Inert Gas

For Use With: Air, Inert Gas
Temperature Range: 40° to 150° F

Threads below the adjustment knob and an included panel-mount nut allow you to add these valves to your instrument panel. Often used in systems running on air compressors, they're installed after pressure-sensitive equipment to obstruct flow and maintain a consistent operating pressure. If the system pressure exceeds the set pressure, they exhaust through the outlet. Adjust the set pressure within the range.

For technical drawings and 3-D models, click on a part number.

Inlet				Outlet
Pipe Size	Thread Size	Location	Max. Pressure, psi	Pipe Size	Thread Size	Location	End-to-End Lg.	Panel Cutout Dia.	Choose an Outlet Pressure Range, psi		Each
NPT Female
Polysulfone Body—Buna-N Diaphragm and Silicone Seal
1/8	__	Side	100	1/8	__	Side	1 1/8"	9/16"	0.5 to 3.5, 0.5 to 10, 0.5 to 30, 0.5 to 60, 0.5 to 90	00000000	000000
UNF Female
Polysulfone Body—Buna-N Diaphragm and Silicone Seal
__	10-32	Side	100	__	10-32	Side	1 1/8"	9/16"	0.5 to 3.5, 0.5 to 10, 0.5 to 30, 0.5 to 60, 0.5 to 90	00000000	00000