PVC Relief Valves | McMaster-Carr

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Body Material

PVC

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Plastic

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For Use With

Sodium Hypochlorite (Bleach)

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Outlet Pipe Size

Relief Port Pipe Size

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Set Pressure

Seal Material

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Less than 500 psi

Valve Function

Pressure Regulation

Pressure Relief

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REACH

Outlet Pressure

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DFARS Specialty Metals

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

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EAR99

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15 Products

Adjustable Inline Pressure-Relief Valves for Chemicals

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.

NPT Female Inlet, Outlet and Relief Port

Image of Product. Front orientation. Contains Annotated. Pressure-Relief Valves. Adjustable Inline Pressure-Relief Valves for Chemicals.

Inlet			Outlet		Relief		Set Pressure
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Port Pipe Size	Port Location	Range, psi	Adjustment Method	Shape	Overall Ht.	For Use With	Temp. Range, ° F	Valve Type		Each







			Dark Gray PVC Body—PTFE Seal

			1/4	Side	350	1/4	Side	1/4	Bottom	10 to 150	External Adjustment Screw	Tee	3 17/32"	Potassium Sulfate, Sodium Hypochlorite (Bleach)	0 to 140	Relief	46315K24	0000000


			1/2	Side	350	1/2	Side	1/2	Bottom	10 to 250	External Adjustment Screw	Tee	5 9/16"	Potassium Sulfate, Sodium Hypochlorite (Bleach)	0 to 140	Relief	46315K25	000000
			1	Side	350	1	Side	1	Bottom	10 to 250	External Adjustment Screw	Tee	5 7/8"	Potassium Sulfate, Sodium Hypochlorite (Bleach)	0 to 140	Relief	46315K27	000000

Adjustable Pressure-Relief Valves for Chemicals

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.

NPT Female Inlet and Relief Port

Inlet			Relief		Set Pressure
Pipe Size	Location	Max. Pressure, psi	Port Pipe Size	Port Location	Range, psi	Adjustment Method	Shape	Features	Overall Ht.	Gauge Port Pipe Size	For Use With	Temp. Range, ° F	Valve Type		Each







			Dark Gray PVC Body—EPDM Seal

			1/2	Bottom	150	1/2	Side	5 to 75	External Adjustment Screw	90° Elbow	Gauge Port	6 3/4"	1/4	Aluminum Chloride, Boric Acid	40 to 140	Relief	5007K61	0000000


			3/4	Bottom	150	3/4	Side	5 to 75	External Adjustment Screw	90° Elbow	Gauge Port	6 7/8"	1/4	Aluminum Chloride, Boric Acid	40 to 140	Relief	5007K62	000000
			1	Bottom	150	1	Side	5 to 75	External Adjustment Screw	90° Elbow	Gauge Port	8 3/4"	1/4	Aluminum Chloride, Boric Acid	40 to 140	Relief	5007K63	000000
			1 1/2	Bottom	150	1 1/2	Side	5 to 75	External Adjustment Screw	90° Elbow	Gauge Port	13 1/4"	1/4	Aluminum Chloride, Boric Acid	40 to 140	Relief	5007K64	00000000
			2	Bottom	150	2	Side	5 to 75	External Adjustment Screw	90° Elbow	Gauge Port	15 1/2"	1/4	Aluminum Chloride, Boric Acid	40 to 140	Relief	5007K65	00000000

Pressure-Regulating Valves for Chemicals

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.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F		Each
NPT Female







				PVC Body—Fluoroelastomer Seal

				1/2	Side	125	1/2	Side	10 to 80	Screw	3"	Chemicals	40 to 140	45965K31	0000000


				3/4	Side	125	3/4	Side	10 to 80	Screw	3 15/16"	Chemicals	40 to 140	45965K32	000000
				1	Side	125	1	Side	10 to 80	Screw	3 15/16"	Chemicals	40 to 140	45965K33	000000
				1 1/2	Side	125	1 1/2	Side	10 to 80	Screw	6 1/8"	Chemicals	40 to 140	45965K34	00000000
				2	Side	125	2	Side	10 to 80	Screw	6"	Chemicals	40 to 140	45965K35	00000000

Air Admittance Valves

No need to vent your plumbing to the outdoors—these valves allow air into your drain, waste, and vent system. When wastewater drains, it creates negative pressure, which opens these valves. When water isn’t draining, they close to prevent sewer gas from escaping. To install, cement the plastic body to your vent pipe. They come as two pieces that thread together. Unthread the pieces to access your vent pipe or for cleaning.

								For Pipe
	Pipe Size	Socket Dp.	Material	Max. Pressure, psi	Includes	Temp., ° F	Specs. Met	Schedule	Material		Each
Male Cement-Socket Fitting Connection



		1 1/2	3/4"	ABS	13	PVC Adapter, 1 1/2 Female Cement Socket Connect x NPT Female	-40 to 150	ASTM D2661, ASTM D2665	40	PVC	6162N11	000000


		2	3/4"	ABS	13	PVC Adapter, 2 Female Cement Socket Connect x NPT Female	-40 to 150	ASTM D2661, ASTM D2665	40	PVC	6162N12	00000