Inert Gas Flow Controls | McMaster-Carr

For applications that require intermittent operation, such as spraying and washing, push or pull the lever on these valves to start flow. They spring closed when the lever is released.

Brass valves are stronger and less brittle than zinc valves for use in higher-pressure applications.

Push-lever valves are commonly used in car wash systems. However, you can’t use them as blow guns. Those with a Viton® fluoroelastomer rubber seal stand up to long-term use with harsh solutions, such as wheel and tire cleaners. Valves with a TFE plastic seat are more durable than those with a Viton® fluoroelastomer rubber seat. For even more durability, choose those with a thick spring—their spring is stronger and lasts longer than standard springs. You can install valves with a mounting stem and nut in a fixed position. Valves with offset ports come with a wand bracket to attach an upholstery cleaning wand, so they’re best for floor and upholstery cleaning equipment. Connect the bracket to the top of the offset ports.

Replace worn components on 30° elbow valves with a repair kit (sold separately).

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.

Brass Body with Pull Activated Lever—Straight

Straight Brass with Pull Activated Lever

Valve Type: Stem
For Use With: Air, Argon, Helium, Inert Gas, Krypton, Neon, Oil, Water, Xenon
Seal Material: Buna-N Rubber
Seat Material: TFE Plastic

NPT Female × NPT Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Temperature Range, °F	End-to-End Lg.		Each
1/4	Not Rated	1000 psi @ 70° F	-40° to 225°	2 5/16"	0000000	000000

Brass Body with Push Activated Lever—Straight

Straight Brass with Push Activated Lever

Valve Type: Stem
For Use With: Air, Argon, Helium, Inert Gas, Krypton, Neon, Oil, Water, Xenon
Seal Material: Viton® Fluoroelastomer Rubber
Seat Material: Viton® Fluoroelastomer Rubber

NPT Female × NPT Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Temperature Range, °F	End-to-End Lg.		Each
1/4	Not Rated	350 psi @ 70° F	-40° to 225°	2 3/16"	0000000	000000

Brass Body with Push Activated Lever and Thick Spring—Straight

Straight Brass with Push Activated Lever and Thick Spring

Valve Type: Stem
For Use With: Air, Argon, Helium, Inert Gas, Krypton, Neon, Oil, Water, Xenon
Seal Material: Viton® Fluoroelastomer Rubber
Seat Material: TFE Plastic

NPT Female × NPT Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Temperature Range, °F	End-to-End Lg.		Each
1/4	Not Rated	350 psi @ 70° F	-40° to 225°	2 3/16"	0000000	000000

Brass Body with Push Activated Lever, Thick Spring, and Mounting Stem and Nut—Straight

Straight Brass with Push Activated
Lever, Thick Spring,
and Mounting Stem and Nut

Valve Type: Stem
For Use With: Air, Argon, Helium, Inert Gas, Krypton, Neon, Oil, Water, Xenon
Seal Material: Viton® Fluoroelastomer Rubber
Seat Material: TFE Plastic

NPT Female × NPT Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Temperature Range, °F	End-to-End Lg.		Each
1/4	Not Rated	350 psi @ 70° F	-40° to 225°	2 3/16"	0000000	000000

Brass Body with Push Activated Lever and Mounting Stem and Nut—Straight

Straight Brass with Push Activated Lever and Mounting Stem and Nut

Valve Type: Stem
For Use With: Air, Argon, Helium, Inert Gas, Krypton, Neon, Oil, Water, Xenon
Seal Material: Viton® Fluoroelastomer Rubber
Seat Material: Viton® Fluoroelastomer Rubber

NPT Female × NPT Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Temperature Range, °F	End-to-End Lg.		Each
1/4	Not Rated	350 psi @ 70° F	-40° to 225°	2 3/16"	0000000	000000

Brass Body with Push Activated Lever and Offset Ports—Straight

Straight Brass with Push Activated Lever and Offset Ports

Valve Type: Stem
For Use With: Air, Argon, Helium, Inert Gas, Krypton, Neon, Oil, Water, Xenon
Seal Material: Buna-N Rubber
Seat Material: TFE Plastic

NPT Female × NPT Female
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Temperature Range, °F	End-to-End Lg.	Includes		Each
1/8	Not Rated	500 psi @ 70° F	-40° to 300°	1 5/8"	Wand Bracket	0000000	000000

Brass Body with Pull Activated Lever—30° Elbow

30° Elbow Brass with Pull Activated Lever

Valve Type: Stem
For Use With: Air, Argon, Helium, Inert Gas, Krypton, Neon, Oil, Water, Xenon
Seal Material: Buna-N Rubber
Seat Material: TFE Plastic

Valves							Repair Kits
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Temperature Range, °F	End-to-End Lg.		Each		Each
NPT Female × NPT Female
1/4	Not Rated	1200 psi @ 70° F	-40° to 225°	2"	0000000	000000	0000000	00000

Drain Valves

Also known as stop cocks, install these valves on your tank for easy draining of air or fluid.

Inline handles can be operated from any position. The handle surrounds the drain outlet, so liquids may splash onto your hands or the handle. Side handles are out of the way of the flow, so your hand and the handle stay dry.

Valves with an external seal are for higher flow applications than valves with an internal seal. They also have a longer valve stem, so they’re less likely to introduce contaminants from exposed threads. Valves with an internal seal have shorter stems than those with external seals, so they fit shorter clearances. However, they’re more likely to introduce contaminants to the tank from debris collected on the exposed threads.

Valves with a brass body won’t corrode when venting air or draining water—even in wet or humid environments.

Brass handles won’t corrode.

Thumb-Screw Handle—Inline

Valves with a thumb-screw handle open by rolling the slip-resistant thumb screw between your fingers. Since these valves don’t have a wide handle, they fit in tighter spaces than valves with other handle styles.

Inlet
Pipe Size	Thread Type	Gender	Outlet Connection Type	Handle Material	Body Material	For Use With	Max. Pressure	Temp. Range, °F	Ht.		Each
Straight—External Seal
1/8	NPT	Male	Unthreaded Hole	Brass	Brass	Air, Water, Inert Gas	100 psi @ 250° F	-65° to 250°	3/4"	0000000	00000

Wing-Nut Handle—Inline (Wing Facing Inlet)

Inlet			Outlet
Pipe Size	Thread Type	Gender	Connection Type	Handle Material	Body Material	For Use With	Max. Pressure	Temp. Range, °F	Ht.		Each
Straight—External Seal
1/8	NPT	Male	Unthreaded Hole	Steel	Brass	Air, Water, Oil, Inert Gas	150 psi @ 250° F	-65° to 250°	7/8"	0000000	00000

Wing-Nut Handle—Inline (Wing Facing Outlet)

Valves with a wing-nut handle give you leverage to open tight, stubborn valves that have been sealed for long periods of time. The wings on these handles face outward, so they fit tanks without enough clearance around the drain hole to fit handles with inlet-facing wings.

A spout outlet smoothly pours any draining liquid into buckets without splashing.

Inlet			Outlet
Pipe Size	Thread Type	Gender	Connection Type	Handle Material	Body Material	For Use With	Max. Pressure	Temp. Range, °F	Ht.		Each
Straight—External Seal
1/4	NPT	Male	Spout	Steel	Brass	Air, Water, Oil, Inert Gas	150 psi @ 250° F	-65° to 250°	1 1/2"	0000000	00000
1/4	NPT	Male	Unthreaded Hole	Steel	Brass	Air, Water, Oil, Inert Gas	150 psi @ 250° F	-65° to 250°	1"	0000000	0000
3/8	NPT	Male	Unthreaded Hole	Steel	Brass	Air, Water, Oil, Inert Gas	150 psi @ 250° F	-65° to 250°	1 1/4"	0000000	0000

Wing-Nut Handle—Side (Wing Facing Inlet)

Valves with a wing-nut handle give you leverage to open tight, stubborn valves that have been sealed for long periods of time. The wings on these handles face inward, so they have a lower profile than outlet-facing wing nuts. A spout smoothly pours any draining liquid into buckets without splashing.

Inlet
Pipe Size	Thread Type	Gender	Outlet Connection Type	Handle Material	Body Material	For Use With	Max. Pressure	Temp. Range, °F	Port-to-Port Lg.		Each
90° Elbow—External Seal
1/4	NPT	Male	Spout	Steel	Brass	Air, Water, Oil, Inert Gas	150 psi @ 250° F	-65° to 250°	11/16"	0000000	00000

T-Handle—Inline

Valves with a T-handle have two flat arms that provide more leverage and torque than thumb-screw handles and are more comfortable to grip than wing-nut handles. They have a removable handle, which can be disassembled for cleaning.

Inlet
Pipe Size	Thread Type	Gender	Outlet Connection Type	Handle Material	Body Material	For Use With	Features	Max. Pressure	Temp. Range, °F	Ht.		Each
Straight—Internal Seal
1/8	NPT	Male	Unthreaded Hole	Brass	Brass	Water, Oil, Inert Gas	Removable Handle	150 psi @ 250° F	-65° to 250°	1 9/16"	000000	000000
1/4	NPT	Male	Unthreaded Hole	Brass	Brass	Water, Oil, Inert Gas	Removable Handle	150 psi @ 250° F	-65° to 250°	1 11/16"	000000	00000
3/8	NPT	Male	Unthreaded Hole	Brass	Brass	Water, Oil, Inert Gas	Removable Handle	150 psi @ 250° F	-65° to 250°	1 13/16"	000000	00000

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.

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

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.

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.

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"	2 to 30, 10 to 50, 25 to 90, 80 to 120, 100 to 180	0000000	0000000
3/8	Side	250	3/8	Side	2 1/4"	2 to 30, 10 to 50, 25 to 90, 80 to 120, 100 to 180	0000000	000000
Brass Body—Neoprene Diaphragm and Buna-N Seal
1/4	Side	400	1/4	Side	2 1/2"	0 to 5, 2 to 35, 20 to 70, 60 to 125, 75 to 200, 100 to 250	0000000	000000
3/8	Side	400	3/8	Side	2 1/2"	0 to 5, 2 to 35, 20 to 70, 60 to 125, 75 to 200, 100 to 250	0000000	000000
1/2	Side	400	1/2	Side	2 7/8"	0 to 5, 2 to 25, 20 to 60, 40 to 80, 75 to 125, 100 to 250	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"	2 to 30, 10 to 50, 25 to 90, 80 to 120, 100 to 180	0000000	000000
3/8	Side	250	3/8	Side	2 1/4"	2 to 30, 10 to 50, 25 to 90, 80 to 120, 100 to 180	0000000	000000
Brass Body—Neoprene Diaphragm and Buna-N Seal
1/4	Side	400	1/4	Side	2 1/2"	0 to 5, 2 to 35, 20 to 70, 60 to 125, 75 to 200, 100 to 250	0000000	000000
3/8	Side	400	3/8	Side	2 1/2"	0 to 5, 2 to 35, 20 to 70, 60 to 125, 75 to 200, 100 to 250	0000000	000000
1/2	Side	400	1/2	Side	2 7/8"	0 to 5, 2 to 25, 20 to 60, 40 to 80, 75 to 125, 100 to 250	0000000	000000

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

For Use With: Water, Oil, Air, Inert Gas
Temperature Range: See Table

A cast iron body absorbs vibration from pressure changes to reduce wear and noise in your pipeline. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

Internal strainers trap debris.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Temperature Range	End-to-End Lg.	Choose an Outlet Pressure Range, psi		Each
NPT Female
Cast Iron Body—Buna-N Diaphragm and Seal with Internal Strainer
1/4	Side	200	1/4	Side	32° to 180° F	3"	2 to 25, 20 to 60	0000000	0000000
3/8	Side	200	3/8	Side	32° to 180° F	3 7/8"	2 to 30, 20 to 70, 40 to 110, 90 to 150	0000000	000000
1/2	Side	200	1/2	Side	32° to 180° F	4 1/2"	10 to 50, 2 to 30, 30 to 125, 50 to 125	0000000	000000
3/4	Side	200	3/4	Side	32° to 180° F	5 1/8"	10 to 35, 105 to 125, 2 to 20, 30 to 75, 50 to 110	0000000	000000
1	Side	200	1	Side	32° to 180° F	5 7/8"	10 to 45, 2 to 20, 20 to 60, 55 to 100, 90 to 125	0000000	000000
1 1/4	Side	200	1 1/4	Side	32° to 180° F	6 3/4"	10 to 30, 2 to 15, 20 to 50, 45 to 100, 90 to 150	0000000	000000
1 1/2	Side	200	1 1/2	Side	32° to 180° F	6 3/4"	10 to 30, 2 to 15, 20 to 50, 45 to 100, 90 to 125	0000000	000000
2	Side	200	2	Side	32° to 180° F	9 1/4"	10 to 60, 2 to 20, 20 to 100, 90 to 125	0000000	00000000
Cast Iron Body—Fluoroelastomer Diaphragm and 420 Stainless Steel Seal
3/8	Side	250	3/8	Side	32° to 300° F	4 1/4"	0 to 10, 10 to 50, 100 to 200, 40 to 100	0000000	000000
1/2	Side	250	1/2	Side	32° to 300° F	3 5/8"	0 to 10, 10 to 50, 100 to 200, 40 to 100	0000000	000000
3/4	Side	250	3/4	Side	32° to 300° F	3 5/8"	0 to 10, 10 to 50, 100 to 200, 40 to 100	0000000	000000
1	Side	250	1	Side	32° to 300° F	4 1/2"	0 to 10, 10 to 30, 30 to 50, 40 to 85	0000000	000000
2	Side	250	2	Side	32° to 300° F	6 1/2"	0 to 10, 10 to 30, 30 to 50, 40 to 85	0000000	000000

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.

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

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.

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%).

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

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.

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

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.

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

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.

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.

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

Adjustable Fast-Acting Pressure-Relief Valves for Air and Inert Gas

For Use With: Air, Inert Gas
Temperature Range: -15° to 250° F

Change set pressure to suit your application—this valve includes four interchangeable color-coded springs with different set pressure ranges. Remove the adjustment screw to change springs; turn the screw to alter the set pressure within the range. The valve springs fully open at the set pressure and remains open until the system pressure is restored below the set pressure. It has a vented relief port to exhaust discharge directly.

Inlet				Set Pressure
Pipe Size	Location	Maximum Pressure, psi	Relief Port Location	Range, psi	Adjustment Method	Overall Ht.	Valve Type	Includes		Each
NPT Male Inlet and Relief Vent
Brass Body—Silicone Seal
1/4	Bottom	200	Side	25 to 200	External Adjustment Screw	1 5/8"	Pop Safety	Yellow Spring (25-50 psi), Red Spring (51-100 psi), Silver Spring (101-150 psi), Blue Spring (151-200 psi)	00000000	00000

Flow-Control Mufflers

Adjust the flow by turning the screw. Use these mufflers with air-powered tools and cylinders to reduce noise and filter exhaust fumes.

For mufflers with an external hex drive, twist the screw and then tighten the hex nut with a wrench to secure. These mufflers are more secure than those with a thumb screw.

For mufflers with a thumb screw, twist the screw and friction secures them in place—no need to use a wrench. Often used in valve exhaust ports, these mufflers are not as secure as those with a nut.

Brass, bronze, and nylon mufflers offer good corrosion resistance.

Stainless steel mufflers offer excellent corrosion resistance.

Mufflers with External Hex Drive

NPT Brass

NPT 316 Stainless Steel

BSPP Nylon Plastic

Metric Nylon Plastic

											Each
Pipe Size	Thread Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating, dB	Features		1-19	20-Up
NPT Male Brass Fitting
1/8	__	20 scfm @ 100 psi	300	300°	1 5/16"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	00000	00000
1/8	__	30 scfm @ 100 psi	300	300°	1 9/16"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	0000	0000
1/4	__	30 scfm @ 100 psi	300	300°	1 9/16"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	0000	0000
1/4	__	40 scfm @ 100 psi	300	300°	1 5/8"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	0000	0000
3/8	__	40 scfm @ 100 psi	300	300°	1 5/8"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	0000	0000
3/8	__	60 scfm @ 100 psi	300	300°	2"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	00000	00000
1/2	__	60 scfm @ 100 psi	300	300°	2"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	00000	0000
1/2	__	70 scfm @ 100 psi	300	300°	2 3/8"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	00000	00000
3/4	__	70 scfm @ 100 psi	300	300°	2 3/8"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	00000	00000
1	__	100 scfm @ 100 psi	300	300°	2 1/2"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	00000	00000
NPT Male 316 Stainless Steel Fitting
1/8	__	12 scfm @ 100 psi	300	390°	1 1/4"	Air, Inert Gas	70	Not Rated	Adjustable Airflow	0000000	00000	00000
1/4	__	25 scfm @ 100 psi	300	390°	1 9/16"	Air, Inert Gas	70	Not Rated	Adjustable Airflow	0000000	00000	00000
3/8	__	30 scfm @ 100 psi	300	390°	1 5/8"	Air, Inert Gas	70	Not Rated	Adjustable Airflow	0000000	00000	00000
1/2	__	50 scfm @ 100 psi	300	390°	1 15/16"	Air, Inert Gas	70	Not Rated	Adjustable Airflow	0000000	00000	00000
3/4	__	70 scfm @ 100 psi	300	390°	2 1/4"	Air, Inert Gas	70	Not Rated	Adjustable Airflow	0000000	00000	00000
1	__	100 scfm @ 100 psi	300	390°	2 3/8"	Air, Inert Gas	70	Not Rated	Adjustable Airflow	0000000	00000	00000
BSPP Male Nylon Plastic Fitting
1/8	__	51 scfm @ 100 psi	145	210°	13/16"	Air, Inert Gas	75	10-20	Adjustable Airflow	0000000	0000	0000
1/4	__	99 scfm @ 100 psi	145	210°	1 3/16"	Air, Inert Gas	75	10-20	Adjustable Airflow	0000000	00000	0000
3/8	__	170 scfm @ 100 psi	145	210°	1 1/2"	Air, Inert Gas	75	10-20	Adjustable Airflow	0000000	00000	00000
Metric Male Nylon Plastic Fitting
__	M5	19 scfm @ 100 psi	145	210°	5/8"	Air, Inert Gas	75	10-20	Adjustable Airflow	0000000	0000	0000

Mufflers with Thumb Screw

NPT Bronze with Thumb Screw

										Each
Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating, dBA	Features		1-19	20-Up
NPT Male Bronze Fitting
1/8	6 scfm @ 100 psi	215	570°	1 1/16"	Air, Inert Gas	35	17-20	Adjustable Airflow, Friction Lock	0000000	00000	00000
1/8	6 scfm @ 100 psi	215	570°	1 3/8"	Air, Inert Gas	35	17-20	Adjustable Airflow, Friction Lock	0000000	0000	0000
1/4	9 scfm @ 100 psi	215	570°	1 3/16"	Air, Inert Gas	35	17-20	Adjustable Airflow, Friction Lock	0000000	0000	0000
1/4	9 scfm @ 100 psi	215	570°	1 9/16"	Air, Inert Gas	35	17-20	Adjustable Airflow, Friction Lock	0000000	0000	0000

About On/Off Valves

About Air Preparation

About Pressure-Relief Valves

Snap-Shut Threaded On/Off Valves