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Sourcing a fast acting electric ball valve
- Thread starter MuntCuffin
- Start date
Blacksheep10
Well-known member
- Joined
- May 19, 2020
- Member Number
- 91
- Messages
- 495
This was my first golf ball launcher, after an arm on a ball valve and a Bimba cylinder, I got an eBay butterfly and burned an arm for it that worked for my air cylinder. It works well but it is cumbersome compared to the diaphragm valve
![[486]](https://data.irate4x4.com/avatars/m/0/94.jpg?1700178133){kind=avatar}
[486]
ugh, that guy again?
this is the answer you're looking for
you can make the piston type ones outta a mishmash of fittings, or steel if that's what you're into
CarterKraft
Red Skull Member
I used sprinkler valve on my first ball bearing Cannon, not rated for any pressure but it did work excellent, and cheap.
CarterKraft
Red Skull Member
Ksand
Red Skull Member
I've worked at a couple places that use these for belt sprays and they work fine
Muckin_Slusher
****
he's not spraying a belt though...
CarterKraft
Red Skull Member
Why do you think that diaphragm valve is not ideal?
WLDWUN
in the woods
I can (and have) done that
but in a much larger size.
18" 600# cryogenic butterfly valve that will close in under .5 seconds against 1100psi gas
small valves with double acting actuators can be done close to .1 seconds
WLDWUN
in the woods
this is what we use
also called a quick exhaust valve.
but they are for venting air in general from a pressurized system.
so you vent the storage tank through them to get the high flow
WLDWUN
in the woods
not really true in that valve
it has a Cv of 22 which is very high for a 1.5" valve
it has a 1.25 orifice
though you do not need the LF option, but it is still a $603 valve
WLDWUN
in the woods
Rupture disc. Just air up to 150psi and bam, the air is released.
Firstram
Well-known member
Pilot activated pneumatic valve Is the way if you have the money!
We use these on our high pressure accumulators roughly $500 ea
McMaster-Carr
For our larger air mortars (30-80 gallon tanks) we use a Bimba to throw a 2 or 3 inch ball valve. Zoom in to see both set ups.
www.mcmaster.com
These 1” solenoid valves have a fairly high coefficient of flow for this type of valve and are rated to 230 psi!
They get used on our small hand held mortars and we run them as high as 350 psi with no ill effect. The 2” versions approach the cost of the pneumatic ball valve with less flow.
The ultimate valve design is shown in this video. It’s a simple design that’s easy to copy if you have access to machine tools. There’s an English version called “Martini Valve” thats rated for 900 psi that’s fucking amazing!
I built a simplified 1/2” version on a 13 cubic inch accumulator that’s been used for all kinds of gags.
Here’s a 500 psi air blast chunking out a prepared piece of scenery.
We use these on our high pressure accumulators roughly $500 ea
McMaster-Carr
For our larger air mortars (30-80 gallon tanks) we use a Bimba to throw a 2 or 3 inch ball valve. Zoom in to see both set ups.
McMaster-Carr
McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.
They get used on our small hand held mortars and we run them as high as 350 psi with no ill effect. The 2” versions approach the cost of the pneumatic ball valve with less flow.
The ultimate valve design is shown in this video. It’s a simple design that’s easy to copy if you have access to machine tools. There’s an English version called “Martini Valve” thats rated for 900 psi that’s fucking amazing!
I built a simplified 1/2” version on a 13 cubic inch accumulator that’s been used for all kinds of gags.
Here’s a 500 psi air blast chunking out a prepared piece of scenery.
Ksand
Red Skull Member
They still work very well and allow a bunch of water flow
Muckin_Slusher
****
I just think it's too restrictive and convoluted compared to an actuator that can bang a ball valve open.
I'm not an engineer, but I know that when fluids have to go around corners and stuff they get slowed down, and those Asco red hat valves have a bunch of corners for the fluid to go around...
I'm usually wrong about everything though, so keep that in mind...
CarterKraft
Red Skull Member
IMO you are fighting the impulse of the first pressure increase in the breach. That starts the projectile down the barrel instantly.
You need to deliver the bulk of the air charge in the next few milliseconds to get maximum velocity.
IMO id go buy a $15 sprinkler valve and put two 9 volt batteries in series and see if you like it...
You need to deliver the bulk of the air charge in the next few milliseconds to get maximum velocity.
IMO id go buy a $15 sprinkler valve and put two 9 volt batteries in series and see if you like it...
[486]
ugh, that guy again?
all I've learned from this thread is that I should start making ridiculous 2" port piloted piston valves "for sell"
CarterKraft
Red Skull Member
Allegedly you can shoot the windows out of the top of this grain silo with a 5/8" ball bearing from this shop door with a 24" barrel, 30lb freon can and shop air...
It will also penetrate a steel roll up emergency fire door and exit the shot rock on the other side
😬 Oops
It will also penetrate a steel roll up emergency fire door and exit the shot rock on the other side
😬 Oops