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Humphrey | TAC 3/2 Push Button Valve, 1/8 in NPTF | 31P

103 in stock | Need More? >>

Ships same day if ordered M-F before 3PM PT.

Pickup Available at Livermore

Items that don't require customization purchased before 12 PM will be available the same business day. Items that require customization or are purchased after 12 PM will be available the next business day.
Three way miniature Push Button valve, normally closed, spring return with 1/8 pipe ports

All TAC Push Button valves feature a work hardened SST button plunger above a 15/32-32 threaded collar. Collar feature permits acceptance of a variety of TAC Air Pilot Operators (sold separately), converting push button valve to an Air Piloted Valve. Button bottoms out on collar to prevent valve overstroke from Air Operator.

Number of Ports 3 ports
Number of Positions 2 positions
Valve Function 3-way, Spring Return
Piping Type Inline, Direct Piping
Options Included Hardened Button for Manual or Mechanical use, Panel Mounting Hardware
Approx Size (in) HxWxD 1.8 x 0.63 x 1.25
Media Air
Type of Operation Push button
Flow Capacity (Cv) 0.38
Port Size 1/8 NPSF
Lubrication Recommended
Media Filtration 40 micron recommended
Pressure Range (psi) 0-125
At Valved Pressure of:
Force to Actuate (lbs):
30 PSI 100 PSI
4 5.5
Operating Speed (cycles/min) 900
Ambient Temperature Range (⁰F) -20~180
Wetted Materials Aluminum, Brass, SST, Buna N
Weight (oz) 3.0
Accepts Air Pilot Operators (sold separately) 341A, 341AR, 341AS, 341ASR
Accepts Manual Operators (sold separately) 34F, 34T
Accepts Mechanical Operators (sold separately): 34B, 34C, 34CW, 34CH

ID #: 4148

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Video Resources

More about this product

Video Transcript

The three-way valve in pneumatics is one of the more common valves you're gonna find in pneumatic systems. And the average configuration, it consists of an in which is where the air goes in an out, which is where the air goes out to do whatever you're gonna do, and an exhaust. So a good. Useful thing that they would do would be a cylinder.

So you might turn on the valve actuator with a push button with a solenoid, which is electricity or whatever, and the cylinder goes up and it stays extended as long as the valve is on air is flowing. But when you turn the valve off air is still flowing to the valve, but it's no longer flowing out of the.

and what happens is that exhaust and the cylinder would slowly or quickly, depending on how you set it up, come back down. So you, you wanna be careful with that, especially if you're underneath the cylinder. The other major use for three-way valves is what we call piloting another larger valve. So in this case, think that you maybe have a big gargantuan six inch valve.

And it's driven by air pilot. And let's say it's flowing something that's flammable or something that's, uh, liquid. And so you need a much larger valve and you have this little air valve that uses the air on and off to turn the big valve on and off. So it's called piloting and it goes into an air pilot when error hits the air pilot.

It actuates the larger valve. When you take air off, you need it to exhaust so that it can change the state of the larger valve. And those are kind of the two major ways that a three-way valve was used. It's a very versatile valve. There are a number of other things that you would use that for in a pneumatic system, and we will go over that at a later time.

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Filter Reviews:
    WC
    03/07/2024
    WARREN C.
    United States

    Humphrey 31P valve

    Excellent quality, works as expected. Appears very well made & durable.

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