Multi purpose valve

[MRR]

I don't think that this is entirely new but I'd like to give it a shot....

The idea for this valve came when I used one of these at work...
It's a polyurethane foam gun.


A quick sketch of the basic idea.


In contrast to traditional hammer valves, this valve is pulled to be opened. Similar to BtB's high pressure valve you only need to overcome the force of the spring at any given pressure.
It also acts like a check valve if you decide to pressurize into the release hole.

Today I took the time to build it with the parts I had laying around.
This is just a basic setup that I hooked up directly to the compressor.


View of the internal parts.


The o-ring grooves took a little time because I made them on a poor mans lathe (aka drill press ). I had to grind the head of the screw and the nut a little down to fit into the 1/4" tee.


Further ideas for this valve:
-The valve has a great flow and would make a good pilot.
-Increasing surface of the "sliding" part of the bolt to go semi/auto.
-Building a BBMG.
-I always wanted to build a hardcore 300psi water gun

[psycix]

That's one neatly built pushbutton valve. Nice job!

[MRR]

Actually it's a "pull open" valve with full 7.5mm flow.

Works excellent on high pressure.

[jackssmirkingrevenge]

This is what I saw from what you wrote:

Building a BBMG_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _full 7.5mm flow_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _Works excellent on high pressure.

[MRR]

Yea a BBMG would work great with this valve.

The point of the valve is that you can open and close it with little force at high pressure.
The opening time might not be as fast as a piston valve but it sure has potential as a secondary valve like a pilot or filling valve.

[psycix]

Pullbutton valve then.

Would make a neat pilot.