Pneumatic Push Buttons | McMaster-Carr

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2B999

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46 Products

About Directional Control Valves

Choose the right valve for your application by matching the actions you'll power to our flow diagrams.

Single-Action Air Directional Control Valves


Style M	Style N	Style P	Style Q	Style R	Style S

Style T	Style U	Style V	Style W	Style Z

Manually control these valves by pushing or turning the actuator. Also known as 3-way or 3/2 valves, they create one action, such as extending a cylinder. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. In the off position, they exhaust air pressure from the system, allowing equipment to reset so the action can be repeated. Valves without an exhaust connection exhaust air to the atmosphere.

Threaded Female Inlet x Threaded Female Outlet


Style M	Style N	Style P	Style Q	Style R

Style S	Style T	Style V	Style W

Spring Return—Valves with spring return actuation return to their original position as soon as you release the actuator.

Hand Return—Valves with hand return actuation stay actuated and return to their original position only when you move the actuator again.

Valve Position—Fail-closed valves block airflow until actuated. Valves that are both fail closed and fail open can be installed to block airflow, or allow air to flow until actuated.

Flow Coefficient (Cv)—Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve. When selecting between valves with the same port size, choose the valve with the higher flow coefficient to ensure it provides enough airflow to operate your system.

											Overall			For Panel Cutout
	Style	No. of Flow Ports	Inlet Size	Outlet Size	Exhaust Connection	Max. Flow Rate @ 100 psi, scfm	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating	Actuator Color	Lg.	Wd.	Ht.	Dia.	Wd.	Lg.	Mounting Fasteners Included		Each
Fail Closed







				Spring Return

				M	3	1/8 NPT	1/8 NPT	Threaded	6	0.11	0 to 120	23 in. Hg	Black	1 3/4"	3/4"	2 3/8"	1/2"	3/4"	1 3/4"	Yes	6464K18	000000


				N	3	1/8 NPT	1/8 NPT	Threaded	6	0.11	0 to 120	23 in. Hg	Red	2 3/8"	2 3/8"	3 5/16"	1 1/4"	3/4"	1 3/4"	Yes	6464K25	000000
				P	3	1/8 NPT	1/8 NPT	Threaded	6	0.106	0 to 100	Not Rated	Black	2 1/4"	2 1/4"	2 1/2"	2 1/4"	—	—	No	6464K35	00000
				P	3	1/8 NPT	1/8 NPT	Threaded	6	0.106	0 to 100	Not Rated	Green	2 1/4"	2 1/4"	2 1/2"	2 1/4"	—	—	No	6464K34	00000
				P	3	1/8 NPT	1/8 NPT	Threaded	6	0.106	0 to 100	Not Rated	Red	2 1/4"	2 1/4"	2 1/2"	2 1/4"	—	—	No	6464K33	00000
				R	3	1/4 NPT	1/4 NPT	Threaded	—	0.98	0 to 145	26.5 in. Hg	Black	1 1/8"	1 7/8"	4 7/8"	7/8"	—	—	No	2700K13	000000
				R	3	1/4 NPT	1/4 NPT	Threaded	53	1.6	0 to 150	29 in. Hg	Black	2 3/16"	1 1/4"	6"	7/8"	—	—	Yes	6859K31	000000
				S	3	10-32 UNF	10-32 UNF	Threaded	16.2	0.25	0 to 125	26 in. Hg	—	5/8"	5/8"	1 7/8"	1/2"	—	—	Yes	8399K11	00000
				T	3	10-32 UNF	10-32 UNF	—	14.4	0.24	0 to 125	Not Rated	Black	5/8"	5/8"	1 7/8"	1/2"	—	—	Yes	62475K12	00000
				V	3	1/8 NPT	1/8 NPT	—	17.8	0.29	0 to 125	Not Rated	Black	1 1/4"	5/8"	2 1/8"	1/2"	—	—	Yes	62475K22	00000
				W	3	1/8 NPT	1/8 NPT	Threaded	6	0.11	0 to 120	23 in. Hg	Black	1 7/8"	1 5/8"	2 1/2"	1 1/4"	3/4"	1 3/4"	Yes	6464K19	000000




						Hand Return

						Q	3	1/8 NPT	1/8 NPT	Threaded	10.7	0.34	0 to 145	26.5 in. Hg	Red	4 1/2"	7/8"	1 3/8"	1 1/4"	—	—	No	61345K16	000000


						R	3	1/4 NPT	1/4 NPT	Threaded	—	0.98	0 to 145	26.5 in. Hg	Black	1 1/8"	1 7/8"	5 1/4"	7/8"	—	—	No	2700K14	000000
						R	3	1/4 NPT	1/4 NPT	Threaded	53	1.6	0 to 150	29 in. Hg	Black	2 1/4"	1 3/8"	6 3/8"	7/8"	—	—	Yes	6859K32	000000

Threaded Male Inlet x Threaded Female Outlet


Style T	Style V

Spring Return—Valves with spring return actuation return to their original position as soon as you release the actuator.

Valve Position—Fail-closed valves block airflow until actuated. Valves that are both fail closed and fail open can be installed to block airflow, or allow air to flow until actuated.

										Overall
	Style	No. of Flow Ports	Inlet Size	Outlet Size	Max. Flow Rate @ 100 psi, scfm	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating	Actuator Color	Lg.	Wd.	Ht.	For Panel Cutout Dia.	Mounting Fasteners Included		Each
Fail Closed







				Spring Return

				T	3	1/8 NPT	10-32 UNF	14.4	0.24	0 to 125	Not Rated	Black	5/8"	5/8"	1 7/8"	1/2"	Yes	62475K11	000000


				V	3	1/8 NPT	1/8 NPT	17.8	0.29	0 to 125	Not Rated	Black	1 1/4"	5/8"	2 1/8"	1/2"	Yes	62475K21	00000

Push-to-Connect Female Inlet x Push-to-Connect Female Outlet

Style V

Spring Return—Valves with spring return actuation return to their original position as soon as you release the actuator.

Valve Position—Fail-closed valves block airflow until actuated. Valves that are both fail closed and fail open can be installed to block airflow, or allow air to flow until actuated.

										Overall
	Style	No. of Flow Ports	For Inlet Tube OD	For Outlet Tube OD	Max. Flow Rate @ 100 psi, scfm	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating	Actuator Color	Lg.	Wd.	Ht.	For Panel Cutout Dia.	Mounting Fasteners Included		Each
Fail Closed







				Spring Return

				V	3	1/4"	1/4"	17.8	0.29	0 to 125	Not Rated	Black	1 1/4"	5/8"	2 1/4"	1/2"	Yes	62475K23	000000

Barbed Male Inlet x Threaded Female Outlet

Style

Spring Return—Valves with spring return actuation return to their original position as soon as you release the actuator.

Valve Position—Fail-closed valves block airflow until actuated. Valves that are both fail closed and fail open can be installed to block airflow, or allow air to flow until actuated.

										Overall
	Style	No. of Flow Ports	For Inlet Tube ID	Outlet Size	Max. Flow Rate @ 100 psi, scfm	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating	Actuator Color	Lg.	Wd.	Ht.	For Panel Cutout Dia.	Mounting Fasteners Included		Each
Fail Closed







				Spring Return

				Z	3	0.17"	10-32 UNF	14.4	0.24	0 to 125	Not Rated	Black	5/8"	5/8"	2"	1/2"	Yes	62475K13	000000

Barbed Male Inlet x Barbed Male Outlet

Style U

Spring Return—Valves with spring return actuation return to their original position as soon as you release the actuator.

Valve Position—Fail-closed valves block airflow until actuated. Valves that are both fail closed and fail open can be installed to block airflow, or allow air to flow until actuated.

											Overall
	Style	No. of Flow Ports	For Inlet Tube ID	For Outlet Tube ID	Exhaust Connection	Max. Flow Rate @ 100 psi, scfm	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating	Actuator Color	Lg.	Wd.	Ht.	For Panel Cutout Dia.	Mounting Fasteners Included		Each
Fail Open/Fail Closed







				Spring Return

				U	3	1/16"	1/16"	Barbed	1.4	0.025	0 to 100	Not Rated	Black, Green, Red, White	3/8"	3/8"	1 1/4"	1/4"	Yes	62475K59	000000

Two-Speed Two-Action Air Directional Control Valves


Style K	Style L	Style M	Style N

Style P	Style Q	Style R	Style S

Often used to extend and then retract a cylinder at different speeds, these valves create two actions and have two exhaust ports. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Also known as 4-way and 5/2 valves.

Spring Return—Valves with spring return actuation return to their original position as soon as you release the actuator.

Hand Return—Valves with hand return actuation stay actuated and return to their original position only when you move the actuator again.

Exhaust Connection—Valves with threaded exhaust connection type allow you to control the speed of each action by attaching a flow control valve to each exhaust port. Valves with no exhaust connection type exhaust air to the atmosphere.

										Overall
	Style	No. of Flow Ports	Inlet Size	Outlet Size	Exhaust Connection	Max. Flow Rate @ 100 psi, scfm	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating	Lg.	Wd.	Ht.	Mount Type	For Panel Cutout Dia.	Mounting Fasteners Included	Mounting Hole Dia.		Each
Threaded Female Inlet x Threaded Female Outlet







				Spring Return

				K	5	1/4 NPT	1/4 NPT	Threaded	32.5	0.98	0 to 145	26.5 in. Hg	1 1/8"	1 7/8"	5 3/4"	Panel, Screw In	7/8"	No	0.26"	2700K11	0000000


				K	5	1/4 NPT	1/4 NPT	Threaded	53	1.6	0 to 150	29 in. Hg	2 1/4"	1 3/8"	7"	Panel, Screw In	7/8"	Yes	0.26"	6859K51	000000
				L	5	1/8 NPT	1/8 NPT	Threaded	14	0.24	25 to 125	Not Rated	1 3/8"	1 3/8"	3 5/8"	Panel, Screw In	1/2"	No	0.19"	61345K76	000000
				N	5	10-32 UNF	10-32 UNF	Threaded	15.3	0.23	0 to 125	Not Rated	3/4"	11/16"	2 5/8"	Panel	1/2"	Yes	—	62475K51	00000
				N	5	10-32 UNF	10-32 UNF	Threaded	16	0.23	0 to 125	Not Rated	3/4"	11/16"	2 5/8"	Panel	1/2"	Yes	—	62475K36	00000
				P	5	1/8 NPT	1/8 NPT	Threaded	16	0.37	0 to 125	Not Rated	1 1/4"	5/8"	2 5/8"	Panel, Screw In	1/2"	Yes	0.14"	62475K38	00000
				Q	5	1/8 NPT	1/8 NPT	Threaded	14	0.24	25 to 125	Not Rated	1 5/8"	1 5/8"	3/4"	Panel, Screw In	1 1/4"	No	0.19"	61345K77	000000
				R	5	1/8 NPT	1/8 NPT	Threaded	10.5	0.186	0 to 150	28 in. Hg	1 1/4"	5/8"	2 5/8"	Panel	1/2"	Yes	—	62475K57	00000




						Hand Return

						K	5	1/4 NPT	1/4 NPT	Threaded	32.5	0.98	0 to 145	26.5 in. Hg	1 1/8"	1 7/8"	6 1/8"	Panel, Screw In	7/8"	No	0.26"	2700K12	000000


						K	5	1/4 NPT	1/4 NPT	Threaded	53	1.6	0 to 150	29 in. Hg	2 3/16"	1 1/4"	7 9/32"	Panel, Screw In	7/8"	Yes	0.26"	6859K52	000000
						L	5	1/8 NPT	1/8 NPT	Threaded	25	0.8	0 to 120	Not Rated	7/8"	1 3/8"	3 7/8"	Panel, Screw In	5/8"	No	0.13"	61345K13	00000
						M	5	1/8 NPT	1/8 NPT	Threaded	19	0.34	15 to 150	Not Rated	1 1/2"	1 1/2"	4 1/2"	Panel	1 1/4"	—	—	61345K55	000000
						S	5	1/4 NPT	1/4 NPT	Threaded	56	1	40 to 120	Not Rated	3"	1 7/8"	2"	Screw In	—	No	0.21"	4558K17	000000

Remote-Access Two-Hand Single-Action Air Directional Control Valves

Image of Product. Front orientation. Contains Annotated, Border. Directional Control Valves. Remote-Access Two-Hand Single-Action Air Directional Control Valves.

The push buttons that operate these valves are separate from the logic unit, allowing you to position them away from machinery. Since both hands are required to simultaneously press the buttons, they protect workers from accidental machinery start-up. Also known as 3-way and 3/2 valves, they create one action, such as extending a cylinder. Valves direct airflow from the inlet to your equipment and exhaust return airflow to create motion. They're fail closed to block airflow until actuated. Return actuation is by spring, so valves return to their starting position as soon as you release the actuator. In the off position, they exhaust air from the system, allowing equipment to reset so the action can be repeated.

Note: Valve is sold as a complete unit, consisting of one logic unit and two signal valves. Port size given is for the logic unit. Signal valve port size is _1/8 NPT female.

Flow Coefficient (Cv)—Flow coefficient (Cv) indicates how much airflow can pass through a valve.

									Overall
	No. of Flow Ports	For Inlet Tube OD	For Outlet Tube OD	Exhaust Connection	Max. Flow Rate @ 100 psi, scfm	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating	Lg.	Wd.	Ht.	Mount Type	For Panel Cutout Dia.	Mounting Fasteners Included	Mounting Hole Dia.		Each
Push-to-Connect Female Inlet x Push-to-Connect Female Outlet







				Spring Return

				3	1/4"	1/4"	Push to Connect	3.8	0.11	36 to 145	Not Rated	2 1/2"	1 3/4"	2 3/4"	Panel, Screw In	1 1/8"	No	0.2"	6282K55	0000000

Replacements for Directional Control Valves

		Each
Replacement Logic Units	6282K22	0000000
Replacement Signal Valves	6282K13	00000

Two-Hand Single-Action Air Directional Control Valves

Since both hands are required to simultaneously press the buttons, these valves protect workers from accidental machinery start-up. Also known as 2-hand control valves, they create one action, such as extending a cylinder. Valves direct airflow from the inlet to your equipment and exhaust return airflow to create motion. They can be installed fail open to allow airflow until actuated, or installed to block airflow until actuated. Return actuation is by spring, so valves return to their starting position as soon as you release the actuator. These valves actuate any 3 or 4-way air piloted spring return power valve or small single-acting cylinders. In the off position, they exhaust air pressure from the system to the atmosphere, allowing equipment to reset so the action can be repeated.

Flow Coefficient (Cv)—Flow coefficient (Cv) indicates how much airflow can pass through a valve.

									Overall
	Actuation Force, ozf	No. of Flow Ports	Inlet Size	Outlet Size	Max. Flow Rate @ 100 psi, scfm	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating	Lg.	Wd.	Ht.	Mount Type	Mounting Fasteners Included	Mounting Hole Dia.		Each
Threaded Female Inlet x Threaded Female Outlet







				Spring Return

				6	2	1/8 NPT	1/8 NPT	6	0.11	70 to 100	Not Rated	10 1/2"	3 1/2"	3 3/16"	Screw In	No	0.28"	62115K22	000000000


				18	2	1/8 NPT	1/8 NPT	6	0.11	70 to 100	Not Rated	10 1/2"	3 1/2"	3 3/16"	Screw In	No	0.28"	62115K21	00000000

Two-Hand Two-Action Air Directional Control Valves

Since both hands are required to simultaneously press the buttons, these valves protect workers from accidental machinery start-up. Also known as 4-way and 4/2 valves, they create two actions, such as extending and then retracting a double-acting cylinder. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Return actuation is by spring, so valves return to their original position as soon as you release the actuator.

Flow Coefficient (Cv)—Flow coefficient (Cv) indicates how much airflow can pass through a valve.

												Overall
	Actuation Force, ozf	No. of Flow Ports	Inlet Size	For Inlet Tube OD	Outlet Size	For Outlet Tube OD	Exhaust Connection	Max. Flow Rate @ 100 psi, scfm	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating	Lg.	Wd.	Ht.	Mount Type	Mounting Fasteners Included	Mounting Hole Dia.		Each
Threaded Female Inlet x Threaded Female Outlet







				Spring Return

				6	4	1/4 NPTF	1/4"	1/4 NPTF	1/4"	Threaded	56	1	70 to 100	Not Rated	10 1/2"	3 1/2"	3 3/16"	Screw In	No	0.28"	62115K24	000000000


				18	4	1/4 NPTF	1/4"	1/4 NPTF	1/4"	Threaded	56	1	70 to 100	Not Rated	10 1/2"	3 1/2"	3 3/16"	Screw In	No	0.28"	62115K23	00000000

Air-Actuated Hand Switches

Keep live electrical circuits away from work areas—these switches use air pressure to turn circuits on or off.

Switch Starting Position	Switch Action	No. of Terminals	Switch Designation	Switching Current @ Voltage	Lg.	Wd.	Ht.	Quick-Disconnect Tab Wd.	Includes		Each



1	1 Off or 1 On	Momentary	3	SPDT	20 amp @ 125V AC, 250V AC	2 1/8"	1 3/4"	1 1/4"	0.187"	10 ft. Tubing	7695K11	000000


1	1 Off or 1 On	Maintained	3	SPDT	20 amp @ 125V AC, 250V AC	2 1/8"	1 3/4"	1 1/4"	0.187"	10 ft. Tubing	7695K12	00000

Build-Your-Own Air-Actuated Hand Switches

Combine a push-button actuator with a switching mechanism to build a complete switch. These switches use air pressure to turn circuits on or off, keeping live electrical circuits away from work areas.

Actuators

Ht.	Tube ID	Tube OD	Material	Enclosure Rating	Includes		Each



2 5/8"	1"	1/8"	1/4"	Plastic	IP04	6 ft. Tubing	7467K53	000000

Switching Mechanisms

Switching

Mechanisms

No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Switch Designation	Switching Current @ Voltage	Quick-Disconnect Tab Wd.	Component	Certification	Specs. Met		Each
1	1 Off or 1 On	Momentary	3	SPDT	21 amp @ 250V AC	0.25"	Switching Mechanism	CE Marked, CSA Certified, UL Listed	UL 508	6573K82	000000
1	1 Off or 1 On	Maintained	3	SPDT	21 amp @ 250V AC	0.25"	Switching Mechanism	CE Marked, CSA Certified, UL Listed	UL 508	6573K81	00000
2	2 Off or 2 On	Momentary	6	DPDT	21 amp @ 250V AC	0.25"	Switching Mechanism	UL Listed	UL 508	6573K84	00000
2	2 Off or 2 On	Maintained	6	DPDT	21 amp @ 250V AC	0.25"	Switching Mechanism	CE Marked, CSA Certified, UL Listed	UL 508	6573K83	00000