Angle Piston Valves | McMaster-Carr

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45 Products

About Actuated On/Off Valves

Choose the right automatic on/off valve based on power source, pressure, and flow rate.

Versa-Mount Air-Driven On/Off Valves

Also known as piston valves, these have a compact, lightweight actuator and an angular body designed for installation in any mounting orientation. They operate on compressed air to automatically start and stop flow. You must control the air to the actuator using either an electric pilot valve (included when listed) or a manual on/off valve (not included).

Valves have a single-acting actuator that only requires air pressure to actuate the valve; they automatically return to the valve starting position when the air turns off. The actuator is directly mounted to the valve body to minimize movement and reduce wear.

Bronze Body

Fail-Closed Valve—Fail closed valves are closed unless actuated.

Fail-Open Valve—Fail open valves are open unless actuated.

Zero Pressure Drop—Zero pressure drop valves don’t require a minimum pressure drop between the inlet and outlet for operation.

Flow Coefficient (Cv)—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.

											Air
	Pipe Size	Gender	Thread Type	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Valve Type	Temp. Range, ° F	Valve Lg.	Overall Ht.	Connection	Pressure Range, psi	For Use With		Each
Single Acting: Air-to-Open, Spring Return (Fail Closed)



		1/2	Female	NPT	5.7	—	150 psi @ 366° F	Piston, Zero Pressure Drop	15 to 365	2 9/16"	7 3/16"	1/8 NPT Female	65 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon, Oxygen, Steam	4923T61	0000000


		1/2	Female	NPT	5.7	240 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	2 9/16"	6"	1/8 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K41	000000
		3/4	Female	NPT	11	—	150 psi @ 366° F	Piston, Zero Pressure Drop	15 to 365	2 15/16"	7 5/16"	1/8 NPT Female	65 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon, Oxygen, Steam	4923T62	000000
		3/4	Female	NPT	11	150 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	2 15/16"	7"	1/8 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K42	000000
		3/4	Female	NPT	11	240 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	2 15/16"	8"	1/8 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K11	000000
		1	Female	NPT	15	90 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	3 9/16"	7"	1/8 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K12	000000
		1	Female	NPT	19	—	150 psi @ 366° F	Piston, Zero Pressure Drop	15 to 365	3 9/16"	7 11/16"	1/8 NPT Female	65 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon, Oxygen, Steam	4923T63	000000
		1	Female	NPT	19	150 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	3 9/16"	8"	1/8 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K43	000000
		1 1/4	Female	NPT	31.3	200 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	4 5/16"	12"	1/4 NPT Female	70 to 145	Air, Argon, Helium, Krypton, Neon, Water, Xenon, Oil	7942K44	000000
		1 1/4	Female	NPT	32	—	150 psi @ 366° F	Piston, Zero Pressure Drop	15 to 365	4 5/16"	9"	1/8 NPT Female	65 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon, Oxygen, Steam	4923T64	000000
		1 1/4	Female	NPT	32	90 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	4 5/16"	9"	1/8 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K13	000000


		1 1/2	Female	NPT	52	—	150 psi @ 366° F	Piston, Zero Pressure Drop	15 to 365	4 3/4"	9 5/8"	1/8 NPT Female	65 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon, Oxygen, Steam	4923T65	000000
		1 1/2	Female	NPT	52	60 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	4 3/4"	10"	1/8 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K14	000000
		1 1/2	Female	NPT	56	240 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	4 11/16"	13"	1/4 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K45	00000000
		2	Female	NPT	68	—	135 psi @ 366° F	Piston, Zero Pressure Drop	15 to 365	5 7/8"	10 3/16"	1/8 NPT Female	65 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon, Oxygen, Steam	4923T96	000000
		2	Female	NPT	68	40 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	5 7/8"	10"	1/8 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K15	000000
		2	Female	NPT	77	150 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	6"	13"	1/4 NPT Female	60 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K46	00000000


		Single Acting: Air-to-Close, Spring Return (Fail Open)



				1/2	Female	NPT	5.7	240 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	2 9/16"	7"	1/8 NPT Female	65 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K51	000000


				3/4	Female	NPT	11	240 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	2 15/16"	8"	1/8 NPT Female	65 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K52	000000
				1	Female	NPT	19	240 psi @ 355° F	—	Piston, Zero Pressure Drop	15 to 355	3 9/16"	8"	1/8 NPT Female	65 to 150	Air, Argon, Helium, Krypton, Neon, Water, Xenon	7942K53	000000

Pilot Valves

		Each
120V AC Pilot Valve	49935K95	0000000

316 Stainless Steel Body

316 stainless steel valves are more corrosion resistant than brass and bronze valves.

Fail-Closed Valve—Fail closed valves are closed unless actuated.

Pressure Drop Assisted—Pressure drop assisted valves require a minimum pressure drop between the inlet and the outlet for operation; the upstream pressure must be greater than the downstream pressure.

											Air
	Pipe Size	Gender	Thread Type	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Valve Type	Temp. Range, ° F	Valve Lg.	Overall Ht.	Connection	Pressure Range, psi	For Use With		Each
Single Acting: Air-to-Open, Spring Return (Fail Closed)



		1/2	Female	NPT	4.1	—	160 psi @ 428° F	Piston, Pressure Drop Assisted	-20 to 425	2 9/16"	5 15/16"	1/8 NPT Female	65 to 145	Steam	5200T41	0000000


		1/2	Female	NPT	4.1	375 psi @ 425° F	—	Piston, Pressure Drop Assisted	-20 to 425	2 9/16"	5 15/16"	1/8 NPT Female	85 to 145	Air, Argon, Helium, Krypton, Neon, Water, Xenon	5200T21	000000
		3/4	Female	NPT	9.3	—	140 psi @ 428° F	Piston, Pressure Drop Assisted	-20 to 425	2 15/16"	9"	1/8 NPT Female	80 to 145	Steam	5200T42	000000
		3/4	Female	NPT	9.3	365 psi @ 425° F	—	Piston, Pressure Drop Assisted	-20 to 425	2 15/16"	8"	1/4 NPT Female	50 to 145	Air, Argon, Helium, Krypton, Neon, Water, Xenon	5200T22	000000
		1	Female	NPT	18.6	245 psi @ 425° F	—	Piston, Pressure Drop Assisted	-20 to 425	3 9/16"	9"	1/4 NPT Female	65 to 145	Air, Argon, Helium, Krypton, Neon, Water, Xenon	5200T23	000000
		1	Female	NPT	18.8	—	140 psi @ 428° F	Piston, Pressure Drop Assisted	-20 to 425	3 9/16"	9"	1/4 NPT Female	60 to 145	Steam	5200T43	000000
		1 1/4	Female	NPT	27.8	—	145 psi @ 428° F	Piston, Pressure Drop Assisted	-20 to 425	4 3/8"	10"	1/4 NPT Female	80 to 145	Steam	5200T44	000000
		1 1/4	Female	NPT	27.8	175 psi @ 425° F	—	Piston, Pressure Drop Assisted	-20 to 425	4 3/8"	10"	1/4 NPT Female	80 to 145	Air, Argon, Helium, Krypton, Neon, Water, Xenon	5200T24	000000

Pilot Valves

		Each
120V AC Pilot Valve	49935K95	0000000

316 Stainless Steel Body with Visual Flow Indicator and Pilot Valve Included

316 stainless steel valves are more corrosion resistant than brass and bronze valves.

Valves with a visual flow indicator on the top of the actuator show whether the valve is open or closed.

Fail-Closed Valve—Fail closed valves are closed unless actuated.

Fail-Open Valve—Fail open valves are open unless actuated.

Zero Pressure Drop—Zero pressure drop valves don’t require a minimum pressure drop between the inlet and outlet for operation.

IP65 Enclosure Rating—IP65 valves resist low-pressure jets of water and dust. They include an electric pilot valve to turn the air supply on and off. All have a manual override for operating the valve during power outages.

											Air
	Pipe Size	Gender	Thread Type	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Valve Type	Temp. Range, ° F	Valve Lg.	Overall Ht.	Connection	Pressure Range, psi	For Use With	Enclosure Rating		Each
Single Acting: Air-to-Open, Spring Return (Fail Closed)



		1/2	Female	NPT	4.9	230 psi @ 356° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	2 9/16"	5"	1/8 NPT Female	27 to 145	Steam	NEMA 4, IP65	8161K22	0000000


		1/2	Female	NPT	4.9	290 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	2 9/16"	4"	1/8 NPT Female	57 to 145	Steam	NEMA 4, IP65	49475K31	000000
		3/4	Female	NPT	9.1	230 psi @ 356° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	3"	5"	1/8 NPT Female	27 to 145	Steam	NEMA 4, IP65	8161K44	000000
		3/4	Female	NPT	9.1	290 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	3"	4"	1/8 NPT Female	67 to 145	Steam	NEMA 4, IP65	49475K32	000000
		1	Female	NPT	21.7	290 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	3 9/16"	8"	1/8 NPT Female	76 to 145	Steam	NEMA 4, IP65	49475K33	000000
		1 1/4	Female	NPT	31.5	230 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	4 3/8"	8"	1/8 NPT Female	83 to 145	Steam	NEMA 4, IP65	49475K34	00000000
		1 1/2	Female	NPT	49	230 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	4 3/4"	8"	1/8 NPT Female	128 to 145	Steam	NEMA 4, IP65	49475K35	00000000
		2	Female	NPT	60.1	160 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	5 15/16"	8"	1/8 NPT Female	114 to 145	Steam	NEMA 4, IP65	49475K36	00000000


		Single Acting: Air-to-Close, Spring Return (Fail Open)



				1/2	Female	NPT	4.9	230 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	2 9/16"	4"	1/8 NPT Female	41 to 145	Water, Oil, Steam	NEMA 4, IP65	49475K61	000000


				3/4	Female	NPT	9.1	230 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	3"	4"	1/8 NPT Female	66 to 145	Water, Oil, Steam	NEMA 4, IP65	49475K62	000000
				1	Female	NPT	21.7	230 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	3 9/16"	8"	1/8 NPT Female	83 to 145	Water, Oil, Steam	NEMA 4, IP65	49475K63	000000
				1 1/2	Female	NPT	49	230 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	4 3/4"	8"	1/8 NPT Female	128 to 145	Water, Oil, Steam	NEMA 4, IP65	49475K65	00000000
				2	Female	NPT	60.1	175 psi @ 355° F	130 psi @ 355° F	Piston, Zero Pressure Drop	15 to 355	5 15/16"	8"	1/8 NPT Female	140 to 145	Water, Oil, Steam	NEMA 4, IP65	49475K66	00000000

Pilot Valves

		Each
120V AC Pilot Valve	49935K95	0000000

Compact Versa-Mount Air-Driven On/Off Valves

About half the height of our other versa-mount valves, these fit in tight spots. All have a compact, lightweight actuator and an angular body designed for installation in any mounting orientation. They operate on compressed air to automatically start and stop flow. You must control the air supply to the valve using either electricity or compressed air. You must control the air to the actuator using either an electric pilot valve (not included) or a manual on/off valve (not included). Valves don’t require a minimum pressure drop between the inlet and outlet for operation.

They have a single-acting actuator that only requires air pressure to open the valve; they automatically spring closed when the air turns off. All valves are fail closed unless actuated. The actuator is directly mounted to the valve body to minimize movement and reduce wear. Body is 316 stainless steel for excellent corrosion resistance.

										Overall		Air
	Pipe Size	Gender	Thread Type	Fitting Connection	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Valve Type	Temp. Range, ° F	Valve Lg.	Lg.	Ht.	Connection	Min. Pressure, psi	Max. Pressure, psi	Fasteners Included		Each
316 Stainless Steel Body







				Single Acting: Air-to-Open, Spring Return (Fail Closed)

				3/8	Female	NPT	Threaded	2.3	240 psi @ 365° F	Piston, Zero Pressure Drop	15 to 365	2 3/16"	3 5/8"	3 11/16"	1/8 NPT Female	60	150	No	5032T11	0000000


				1/2	Female	NPT	Threaded	4.1	180 psi @ 365° F	Piston, Zero Pressure Drop	15 to 365	2.56"	3 7/8"	3 13/16"	1/8 NPT Female	60	150	No	5032T12	000000
				3/4	Female	NPT	Threaded	7.6	90 psi @ 365° F	Piston, Zero Pressure Drop	15 to 365	2.95"	4 3/16"	4 1/8"	1/8 NPT Female	60	150	No	5032T13	000000

Pilot Valves