Regulators with 2 Pipe Size Inlet

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	Inlet Pipe Size Inlet Pipe Size	Show

	Inlet Pipe Size Inlet Pipe Size	Hide

	For Use With For Use With

	Outlet Pipe Size Outlet Pipe Size

	Maximum Inlet Pressure Maximum Inlet Pressure

	Body Material Body Material

	Valve Function Valve Function

Back-Pressure Regulation

	Inlet Thread Type Inlet Thread Type

NPT

	Valve Type Valve Type

Back-Pressure Regulator

	Maximum Temperature Maximum Temperature

	Shape Shape


Straight	90° Elbow

	Inlet Connection Type Inlet Connection Type

	Pipe

	Inlet Connection Style Inlet Connection Style

Threaded

	Seal Material Seal Material

	Outlet Location Outlet Location

Side

Bottom

	Outlet Connection Type Outlet Connection Type

	Pipe

	Outlet Connection Style Outlet Connection Style

Threaded

	Inlet Location Inlet Location

Side

Bottom

	Outlet Thread Type Outlet Thread Type

NPT

	Minimum Temperature Minimum Temperature

	Inlet Gender Inlet Gender

Female

Male

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant with
Exemptions

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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34 Products

About Pressure-Relief Valves

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
2	Side	400	2	Side	9 1/4"	2 to 20, 10 to 60, 20 to 100, 90 to 150	00000000	000000000

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.

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

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
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	0000000
Cast Iron Body—Fluoroelastomer Diaphragm and 420 Stainless Steel Seal
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

Heavy Duty Pressure-Regulating Valves for Water and Air

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

Thicker walls and a 304 stainless steel seal make these valves tougher than brass pressure-regulating valves. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have an internal strainer to trap debris. Body is bronze for durability and a long service life.

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—EPR Diaphragm and 304 Stainless Steel Seal
2	Side	300	2	Side	10 7/16"	10 to 40, 20 to 70, 71 to 150	0000000	000000000

Quick-Set Pressure-Regulating Valves for Water

For Use With: Water
Temperature Range: See Table
Specifications Met:
Bronze Body Valves: CSA Certified
Stainless Steel Body Valves: ASSE 1003 Listed, CAN/CSA-B356, CSA Certified, IAPMO Listed

Change outlet pressure without using a gauge—turn the dial to adjust the outlet pressure in 5 or 10 psi increments. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. They also have an internal strainer to trap debris. Union fittings on both ends of the valves disassemble for easy valve installation and removal. All of these valves meet Canadian safety standards for pressure-reducing valves. Some also meet American and international plumbing safety and performance standards.

Bronze valves are durable and have a long service life. Their gauge ports let you attach a pressure gauge to measure the pressure flowing in and out of the valve.

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

Threaded—NPT Female

Valve

Inlet			Outlet			Gauge Port
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pipe Size	Location	Temp. Range, °F	End-to-End Lg.		Each
Bronze Body—EPDM Diaphragm and EPDM Seal
2	Side	250	2	Side	25 to 90	1/4	Side	33° to 140°	8 37/64"	00000000	0000000

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"	150 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 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
2	Side	300	2	Side	5 1/2"	5 to 20, 10 to 30, 20 to 45, 30 to 95, 60 to 160	00000000	000000000

Pressure-Regulating Valves for Steam

For Use With: Steam
Temperature Range: -20° to 400° F

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

Internal strainers trap debris.

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

Valves
Inlet			Outlet						Repair Kits
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Choose an Outlet Pressure Range, psi		Each		Each
NPT Female
Cast Iron Body—Bronze Diaphragm and 420 Stainless Steel Seal
2	Side	250	2	Side	6 1/2"	0 to 10, 10 to 30, 30 to 50, 40 to 85	0000000	0000000	0000000	0000000
Cast Iron Body—Bronze Diaphragm and PTFE Seal with Internal Strainer
2	Side	150	2	Side	9 1/4"	2 to 20, 10 to 60, 20 to 100, 90 to 150	0000000	000000	0000000	000000

Extended-Life Pressure-Regulating Valves for Steam

For Use With: Steam
Temperature Range: -20° to 400° F

For a longer service life than cast iron valves, these have a durable bronze body. All automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. 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—Bronze Diaphragm and PTFE Seal
2	Side	250	2	Side	9 1/4"	10 to 60, 2 to 20, 20 to 100, 90 to 150	00000000	000000000

High-Accuracy Pressure-Regulating Valves for Steam

For Use With: Steam
Temperature Range: 40° to 450° F

Control steam line pressure with ±1 psi accuracy. 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 cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline. They meet ANSI Class IV for tight shut-off (max. leakage rate of 0.01%). Install 1/4 NPT male pipe (not included) between the control valve and your downstream steam line.

Repair kits (sold separately) include replacement seals, diaphragm, spring, and spring assembly.

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

Valves
Inlet			Outlet					Repair Kits
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Choose an Outlet Pressure Range, psi		Each		Each
NPT Female
Cast Iron Body—301 Stainless Steel Diaphragm and 420 Stainless Steel Seal
2	Side	250	2	Side	3 to 20, 5 to 50, 10 to 100, 20 to 150	0000000	000000000	0000000	0000000

Pressure-Regulating Valves for Drinking Water

Valve With Union Fitting

For Use With: Drinking Water
Temperature Range: 33° to 140° F

These valves meet NSF/ANSI 61 for use in drinking water systems. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All valves have a gauge port. An internal strainer traps debris. Body is bronze for durability and a long service life.

Valves with union fitting disassemble for easy installation and removal.

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

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	End-to-End Lg.	Specifications Met		Each
NPT Female
Bronze Body—Buna-N Diaphragm and Seal with Internal Strainer and Union Fitting
2	Side	300	2	Side	25 to 75	6 1/4"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	0000000

Pressure-Regulating Valves for Chemicals

For Use With: Chemicals
Temperature Range:
Polypropylene Body: 35° to 180° F
PVC Body: 40° to 140° F

A plastic body and fluoroelastomer seal stand up to harsh chemicals. These valves 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	Pressure Range, psi	End-to-End Lg.		Each
NPT Female
PVC Body—Fluoroelastomer Seal
2	Side	125	2	Side	10 to 80	6"	00000000	000000000

Back-Pressure-Regulating Valves for Water and Oil

For Use With: Water, Oil
Temperature Range: -40° to 200° F

Commonly used as bypass lines after centrifugal, reciprocating, and rotary pumps, these valves obstruct flow to maintain sufficient operating pressure in your system. If the system pressure exceeds the set pressure, they exhaust through the threaded relief port. Adjust the set pressure within the range. Valves have a cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline.

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

Inlet			Outlet		Relief 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
Cast Iron Body—Nickel Alloy Diaphragm and 303 Stainless Steel Seal
2	Side	400	2	Side	2	Bottom	5"	10 to 55, 30 to 100, 40 to 200, 125 to 300, 200 to 400	0000000	000000000

Remote-Discharge ASME-Code Fast-Acting
Pressure-Relief Valves for Air and Inert Gas

Valve

Valve With Test Lever

Valve With Swivel Test Lever

For Use With: Air, Inert Gas
Specifications Met: ASME BPVC.VIII
Temperature Range: See table

Unlike valves that release discharge directly, these have a threaded relief port to direct discharge away from your work environment. They spring fully open at the set pressure and remain fully open until the system pressure is restored below the set pressure. All meet ASME Code Section VIII for use with air and inert gas pressure vessels. Body is bronze for durability and a long service life.

Fluoroelastomer seals provide better leak protection than brass or 316 stainless steel seals.

Swivel test levers rotate 360° around the valve for use in areas with limited clearance.

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

2 NPT Male Bottom Inlet × 2 NPT Female Side Relief Port

Material
Seal	Body	Temperature Range °F	Test Mechanism	Test Lever Type	Overall Ht.	Valve Type	Choose a Set Pressure, psi		Each
Brass	Bronze	-15° to 406°	Lever	Swivel	11"	Pop Safety	15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 175, 200, 225, 250	0000000	0000000

2 NPT Male Bottom Inlet × 2 1/2 NPT Female Side Relief Port

Material
Seal	Body	Temperature Range °F	Test Mechanism	Overall Ht.	Valve Type	Choose a Set Pressure, psi		Each
Brass	Bronze	-60° to 406°	Lever	13 5/8"	Pop Safety	15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 175, 200, 225, 250, 275, 300	0000000	0000000
Brass	Bronze	-15° to 406°	__	10 7/8"	Pop Safety	15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 175, 200, 225, 250	0000000	000000
Brass	Bronze	-15° to 406°	Lever	11 1/8"	Pop Safety	15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 175, 200, 225, 250	0000000	000000
Fluoroelastomer	Bronze	-15° to 406°	Lever	13 5/8"	Pop Safety	15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 175, 200, 225, 250, 275, 300	0000000	000000

Large-Diameter Remote-Discharge Fast-Acting
Pressure-Relief Valves for Air and Inert Gas

For Use With: Air, Inert Gas
Temperature Range: -20° to 406° F

Commonly used with high-volume blowers, compressors, and air-powered conveyors, these valves quickly relieve a large amount of air in systems with a pipe size of 2 or greater. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. Attach a drain line to the threaded relief port for remote discharge. Valves have a cast iron body to absorb vibration for reduced noise and wear in your pipeline.

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

Inlet			Relief Port
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Temperature Range, ° F	Overall Ht.	Test Mechanism	Valve Type	Choose a Set Pressure, psi		Each
NPT Male Inlet and NPT Female Relief Port
Cast Iron Body—Bronze Seal
2	Bottom	60	2	Side	-20° to 406°	7"	T-Handle	Pop Safety	2, 4, 6, 8, 10, 12, 14	0000000	0000000

Large-Diameter Remote-Discharge ASME-Code
Fast-Acting Pressure-Relief Valves for Air and Inert Gas

For Use With: Air, Inert Gas
Specifications Met: ASME BPVC.VIII
Temperature Range: -20° to 406° F

These valves meet ASME Code Section VIII for use with air and inert gas pressure vessels. Commonly used with high-volume blowers, compressors, and air-powered conveyors, they quickly relieve a large amount of air in systems with a pipe size of 2 or greater. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. Attach a drain line to the threaded relief port for remote discharge. Valves have a cast iron body to absorb vibration for reduced noise and wear in your pipeline.

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

Inlet			Relief Port
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Overall Ht.	Test Mechanism	Valve Type	Choose a Set Pressure, psi		Each
NPT Male Inlet and NPT Female Relief Port
Cast Iron Body—Bronze Seal
2	Bottom	60	2	Side	7"	T-Handle	Pop Safety	16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60	0000000	0000000

ASME-Code Fast-Acting Pressure-Relief Valves for Steam

Valve With Test Lever

For Use With: Steam
Temperature Range: -60° to 400° F

These valves meet ASME Code Section I for use with steam power boilers requiring pressure relief above 15 psi. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. For remote discharge, attach a drain line to the threaded relief port. Valves have a durable bronze body for a long service life.

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

Inlet			Relief Port
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Overall Ht.	Test Mechanism	Valve Type	Specifications Met	Choose a Set Pressure, psi		Each
NPT Male Inlet and NPT Female Relief Port
Bronze Body—Brass Seal
2	Bottom	250	2 1/2	Side	13 5/8"	Lever	Pop Safety	ASME BPVC.I	15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 125, 150, 175, 200, 225, 250	0000000	0000000

ASME-Code Fast-Acting Pressure-Relief Valves for Low-Pressure Steam

For Use With: Steam
Specifications Met: ASME BPVC.IV
Max. Temperature: 250° F

For use with low-pressure steam-heating boilers requiring pressure relief at 15 psi, these valves meet ASME Code Section IV. All spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. Body is bronze for durability and a long service life.

Threaded relief ports can be attached to a drain line for remote discharge.

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

Elbow

Inlet				Relief Port
Pipe Size	Connection	Location	Maximum Pressure, psi	Pipe Size	Connection	Location	Steam Flow Capacity, lbs./hr.	Set Pressure, psi	Overall Ht.	Test Mechanism	Valve Type		Each
Bronze Body—PTFE-Coated EPDM Seal
2	NPT Male	Bottom	15	2	NPT Female	Side	2,500	15	6 9/16"	Lever	Pop Safety	000000	0000000

ASME-Code Fast-Acting Pressure-Relief Valves for Hot Water

For Use With: Water
Specifications Met: ASME BPVC.IV
Temperature Range: 33° to 250° F

Protect your water-heating system with these valves that meet ASME Code Section IV for hot water heaters and boilers. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. All have a threaded relief port that can be attached to a drain line for remote discharge. Valves have a durable bronze body for a long service life.

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

Inlet		Relief Port
Pipe Size	Location	Pipe Size	Location	Overall Ht.	Test Mechanism	Valve Type	Choose a Set Pressure, psi		Each
NPT Female Inlet and Relief Port
Bronze Body—Silicone Seal
2	Bottom	2	Side	14"	Lever	Pop Safety	30, 50, 60, 75, 100, 125, 150	0000000	0000000

Fast-Acting Temperature- and Pressure-Relief Valves for Hot Water

Male × Female

For Use With: Water
Specifications Met:
Pipe size of 3/4-2: ASME BPVC.IV
Pipe size of 1/2-2: CSA Certified
Max. Temperature: 210° F

Also known as T & P valves, these open when water temperature reaches 210° F or at the set pressure. They are commonly used with water heaters and storage tanks. All spring fully open at a water temperature of 210° F or the set pressure and remain open until the system is restored below the set point. For remote discharge, valves have a threaded relief port to attach a drain line. Body is bronze for durability and a long service life.

Valves with 3/4 to 2 pipe size meet ASME Code Section IV for hot water.

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

Inlet			Relief Port		Set
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Pressure	Temperature, °F	Water Flow Capacity, Btu/hr.	Insertion Lg.	Valve Ht.	Overall Ht.	Test Mechanism	Valve Type		Each
NPT Male Inlet and NPT Female Relief Port
Bronze Body—Silicone Seal
2	Bottom	150	1 1/2	Side	150	210°	1,200,000	3"	8 1/2"	11 1/2"	Lever	Pop Safety	0000000	0000000

Pressure-Relief Valves for Water

For Use With: Water
Temperature Range: 33° to 180° F

These valves are commonly used with pumps in low-pressure water systems. They begin opening at the set pressure and fully open at about 10% over the set pressure. Valves begin closing as pressure drops and fully close when the system pressure is restored below the set pressure. Set pressure is not adjustable.

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

NPT Female Inlet and Relief Port

Inlet			Relief Port
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Overall Ht.	Choose a Set Pressure, psi		Each
Brass Body—Rubber Seal
2	Bottom	120	2	Side	6 9/16"	30, 65	0000000	0000000

Adjustable Pressure-Relief Valves for Fuel

For Use With: Diesel Fuel, Fuel Oil, Gasoline, Kerosene
Temperature Range: -20° to 400° F

To gradually relieve pressure in lines for diesel fuel, fuel oil, gasoline, and kerosene, these valves begin opening at the set pressure and fully open at about 10% over the set pressure. They begin closing as pressure drops and fully close when the system pressure is restored below the set pressure. Adjust the set pressure within the range.

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

Inlet			Relief Port
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Set Pressure Adjustment Method	Overall Ht.	Choose a Set Pressure Range, psi		Each
NPT Female Inlet and Relief Port
Brass Body—416 Stainless Steel Seal
2	Bottom	1,000	2	Side	External Adjustment Screw	13"	3 to 10, 7 to 35, 30 to 100, 60 to 175, 150 to 350, 250 to 600	0000000	0000000

Precision-Adjustment Pressure-Relief Valves for Fuel

For Use With: Diesel Fuel, Fuel Oil, Gasoline, Kerosene
Temperature Range: -60° to 450° F

A finely threaded adjustment screw lets you make precise set pressure adjustments. These valves are for use with diesel fuel, fuel oil, gasoline, and kerosene. They begin opening at the set pressure and fully open at about 10% over the set pressure. Valves begin closing as pressure drops and fully close when the system pressure is restored below the set pressure. Adjust the set pressure within the range.

Valves with a bronze body are harder and more durable than valves with a brass body for a longer service life.

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

Inlet			Relief Port
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Set Pressure Adjustment Method	Overall Ht.	Choose a Set Pressure Range, psi		Each
NPT Male Inlet and NPT Female Relief Port
Bronze Body and Seal
2	Bottom	400	2	Side	External Adjustment Screw	10 7/8"	0 to 14, 15 to 25, 26 to 40, 41 to 75, 76 to 110, 111 to 130, 131 to 150, 151 to 200, 201 to 400	0000000	0000000

Adjustable Pressure-Relief Valves for Chemicals

For Use With: Aluminum Chloride, Boric Acid
Temperature Range: 40° to 140° F

Often used with catalysts, pH buffers, and electroplating solutions, these valves have a PVC body and an EPDM seal for excellent chemical resistance. They begin opening at the set pressure and fully open at about 10% over the set pressure. Valves begin closing as pressure drops and fully close when the system pressure is restored below the set pressure. Adjust the set pressure within the range. Valves have a port for attaching a pressure gauge.

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

Inlet			Relief Port		Set Pressure
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Range, psi	Adjustment Method	Overall Ht.	Gauge Port Pipe Size		Each
NPT Female Inlet and Relief Port
Dark Gray PVC Body—EPDM Seal
2	Bottom	150	2	Side	5 to 75	External Adjustment Screw	15 1/2"	1/4	0000000	000000000

Extended-Life Vacuum-Regulating Valves for Air and Inert Gas

For Use With: Air, Inert Gas
Temperature Range: -20° to 180° F

For a longer service life than brass vacuum-regulating valves, these are made of bronze for strength and durability. They throttle a high vacuum source to maintain a lower vacuum level in your system. Adjust the outlet vacuum level within the range.

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

Inlet		Outlet
Pipe Size	Location	Pipe Size	Location	Vacuum Range, in. of Hg	Vacuum Adjustment Method	End-to-End Lg.		Each
NPT Female
Bronze Body—Neoprene Diaphragm and Chrome-Plated Bronze Seal
2	Side	2	Side	8 to 30	Screw	5 3/4"	0000000	000000000

Safety-Lockout Air On/Off Valves

Brass Body

Padlocks that comply with OSHA 29 CFR 1910.147 meet standards for the control of energy sources that could injure workers.

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

NPT Female Inlet, Outlet, and Exhaust

								Overall
Inlet Pipe Size	Outlet Pipe Size	Exhaust Pipe Size	Flow Coefficient (Cv)	Min. Flow Rate	Max. Flow Rate	Max. Pressure, psi	Temp. Range, °F	Lg.	Wd.	Ht.	For Max. Padlock Shackle Dia.	Specifications Met		Each
Brass Body
2	2	1/4	190	Not Rated	Not Rated	200	32° to 210°	8 9/16"	3 3/8"	5 3/4"	9/32"	OSHA Compliant 29 CFR 1910.147	0000000	0000000

About Pressure-Relief Valves

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

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

Heavy Duty Pressure-Regulating Valves for Water and Air

Quick-Set Pressure-Regulating Valves for Water

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

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

Pressure-Regulating Valves for Steam

Extended-Life Pressure-Regulating Valves for Steam

High-Accuracy Pressure-Regulating Valves for Steam

Pressure-Regulating Valves for Drinking Water

Pressure-Regulating Valves for Chemicals

Back-Pressure-Regulating Valves for Water and Oil

Remote-Discharge ASME-Code Fast-ActingPressure-Relief Valves for Air and Inert Gas

Large-Diameter Remote-Discharge Fast-ActingPressure-Relief Valves for Air and Inert Gas

Large-Diameter Remote-Discharge ASME-CodeFast-Acting Pressure-Relief Valves for Air and Inert Gas

ASME-Code Fast-Acting Pressure-Relief Valves for Steam

ASME-Code Fast-Acting Pressure-Relief Valves for Low-Pressure Steam

ASME-Code Fast-Acting Pressure-Relief Valves for Hot Water

Fast-Acting Temperature- and Pressure-Relief Valves for Hot Water

Pressure-Relief Valves for Water

Adjustable Pressure-Relief Valves for Fuel

Precision-Adjustment Pressure-Relief Valves for Fuel

Adjustable Pressure-Relief Valves for Chemicals

Extended-Life Vacuum-Regulating Valves for Air and Inert Gas

Safety-Lockout Air On/Off Valves

Remote-Discharge ASME-Code Fast-Acting
Pressure-Relief Valves for Air and Inert Gas

Large-Diameter Remote-Discharge Fast-Acting
Pressure-Relief Valves for Air and Inert Gas

Large-Diameter Remote-Discharge ASME-Code
Fast-Acting Pressure-Relief Valves for Air and Inert Gas