PVC Pressure Regulators | McMaster-Carr

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	Body Material Body Material

PVC

PVC Plastic

CPVC Plastic

	Inlet Pipe Size Inlet Pipe Size

	Outlet Pipe Size Outlet Pipe Size

	For Use With For Use With

	Valve Function Valve Function

	Shape Shape

	Straight
	90° Elbow
	Tee

	Maximum Inlet Pressure Maximum Inlet Pressure

Less than 500 psi

	Seal Material Seal Material

Rubber

Plastic

	Inlet Connection Type Inlet Connection Type

	Pipe

	Set Pressure Set Pressure

5-75 psi

10-150 psi

10-250 psi

	Valve Type Valve Type

	Inlet Thread Type Inlet Thread Type

NPT

	Flow Coefficient (Cv) Flow Coefficient (Cv)

	Color Color

	Dark Gray		White
	Gray		Light Gray

	Pipe Size Pipe Size

1/2

3/4

1 1/2

	End-to-End Length End-to-End Length

	Maximum Temperature Maximum Temperature

Less than 200° F

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

RoHS Compliant

	Inlet Gender Inlet Gender

Female

	Outlet Connection Style Outlet Connection Style

Threaded

	Relief Port Pipe Size Relief Port Pipe Size

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

REACH Compliant

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

DFARS Specialty Metals
COTS-Exempt

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26 Products

About Pressure-Relief Valves

About Backflow-Prevention Valves

About On/Off Valves

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
1/2	Side	125	1/2	Side	10 to 80	3"	00000000	0000000
3/4	Side	125	3/4	Side	10 to 80	3 15/16"	00000000	000000
1	Side	125	1	Side	10 to 80	3 15/16"	00000000	000000
1 1/2	Side	125	1 1/2	Side	10 to 80	6 1/8"	00000000	00000000
2	Side	125	2	Side	10 to 80	6"	00000000	00000000

Adjustable Inline Pressure-Relief Valves for Chemicals

For Use With: Potassium Sulfate, Sodium Hypochlorite
Temperature Range: 0° to 140° F

With a three-port design, these valves allow inline flow from the inlet to the outlet during normal conditions and divert flow through the relief port in overpressure conditions. Often used with feed pumps for fertilizers and bleach, they have a PVC body and a PTFE seal for excellent chemical resistance. The relief port begins opening at the set pressure and fully opens at about 10% over the set pressure. It begins closing as pressure drops and fully closes when the system pressure is restored below the set pressure, resuming inline flow from the inlet to the outlet. Adjust the set pressure within the range.

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

Inlet			Outlet		Relief Port		Set Pressure
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Pipe Size	Location	Range, psi	Adjustment Method	Overall Ht.		Each
NPT Female Inlet, Outlet, and Relief Port
Dark Gray PVC Body—PTFE Seal
1/4	Side	350	1/4	Side	1/4	Bottom	10 to 150	External Adjustment Screw	3 17/32"	00000000	0000000
1/2	Side	350	1/2	Side	1/2	Bottom	10 to 250	External Adjustment Screw	5 9/16"	00000000	000000
1	Side	350	1	Side	1	Bottom	10 to 250	External Adjustment Screw	5 7/8"	00000000	000000

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
1/2	Bottom	150	1/2	Side	5 to 75	External Adjustment Screw	6 3/4"	1/4	0000000	0000000
3/4	Bottom	150	3/4	Side	5 to 75	External Adjustment Screw	6 7/8"	1/4	0000000	000000
1	Bottom	150	1	Side	5 to 75	External Adjustment Screw	8 3/4"	1/4	0000000	000000
1 1/2	Bottom	150	1 1/2	Side	5 to 75	External Adjustment Screw	13 1/4"	1/4	0000000	000000
2	Bottom	150	2	Side	5 to 75	External Adjustment Screw	15 1/2"	1/4	0000000	00000000

Vacuum-Breaking Valves for Chemicals

A plastic body withstands pH neutralizing, cleaning, and plating solutions containing sodium hydroxide, methyl ethyl ketone, and other harsh chemicals. Also known as vacuum breakers, these valves have vents that open when pressure drops to relieve vacuum conditions and prevent backward suction from drawing liquid into upstream piping.

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

Diaphragm

For Use With: Air, Ammonia, Argon, Beverage, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Food, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol, Methyl Ethyl Ketone, Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Water, Xenon
Diaphragm Material: Fluoroelastomer Rubber
Seal Material: Fluoroelastomer Rubber

PVC Plastic Body
Pipe Size	For Pipe Schedule	Max. Pressure	Min. Opening Pressure, psi	End-to-End Lg.	Color	Temperature Range, °F		Each
NPT Female × NPT Female
1/2	80	100 psi @ 75° F	1	4 5/16"	Gray	40° to 140°	000000	0000000
3/4	80	100 psi @ 75° F	1	4 5/8"	Gray	40° to 140°	0000000	000000
1	80	100 psi @ 75° F	1	5 1/8"	Gray	40° to 140°	0000000	000000
CPVC Plastic Body
NPT Female × NPT Female
1/2	80	100 psi @ 75° F	1	4 5/16"	Light Gray	40° to 180°	0000000	000000
3/4	80	100 psi @ 75° F	1	4 5/8"	Light Gray	40° to 180°	0000000	000000
1	80	100 psi @ 75° F	1	5 1/8"	Light Gray	40° to 180°	0000000	000000

Spring-Loaded Piston

For Use With: Air, Ammonia, Argon, Beverage, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Food, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol, Methyl Ethyl Ketone, Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Water, Xenon
Piston Material:
PVC Plastic Body: PVC Plastic
CPVC Plastic Body: CPVC Plastic
Spring Material: Plastic Polymer
Seal Material: Fluoroelastomer Rubber

PVC Plastic Body
Pipe Size	For Pipe Schedule	Max. Pressure	Min. Opening Pressure, psi	End-to-End Lg.	Color	Temperature Range, °F		Each
NPT Female × NPT Female
1 1/2	80	100 psi @ 75° F	1	7 15/16"	Gray	40° to 140°	0000000	0000000
2	80	100 psi @ 75° F	1	8 1/2"	Gray	40° to 140°	0000000	000000
CPVC Plastic Body
NPT Female × NPT Female
1 1/2	80	100 psi @ 75° F	1	7 15/16"	Light Gray	40° to 180°	0000000	000000
2	80	100 psi @ 75° F	1	8 1/2"	Light Gray	40° to 180°	0000000	000000

Socket-Connect On/Off Valves for Drinking Water

Valve Type: Ball
For Use With: Drinking Water
Seal Material: EPDM Rubber
Specifications Met: NSF/ANSI 61

Insert unthreaded pipe into the socket ends and bond with primer and cement to create a permanent, leak-tight connection. These valves meet NSF/ANSI 61, which means they’re safe to use with drinking water systems. All have a T-handle that resists accidental movement when snagged or bumped. They are full port, so they do not 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.

PVC Plastic Body
Pipe Size	For Pipe Schedule	Flow Coefficient (Cv)	Max. Pressure	Temperature Range, °F	Vacuum Rating, in. of Hg	End-to-End Lg.	Choose a Color		Each
Socket Connect × Socket Connect
2	40, 80	755	150 psi @ 70° F	40° to 140°	26	5 3/16"	Dark Gray, White	0000000	000000
3	40, 80	1,660	150 psi @ 70° F	40° to 140°	26	7 15/16"	Dark Gray, White	0000000	000000
4	40, 80	3,129	150 psi @ 70° F	40° to 140°	26	9 3/16"	Dark Gray, White	0000000	000000

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About Pressure-Relief Valves

About Backflow-Prevention Valves

About On/Off Valves

Pressure-Regulating Valves for Chemicals

Adjustable Inline Pressure-Relief Valves for Chemicals

Adjustable Pressure-Relief Valves for Chemicals

Vacuum-Breaking Valves for Chemicals

Socket-Connect On/Off Valves for Drinking Water