Super Soaker Central forums

Silence · 03-28-2007, 04:39 PM

CROC, are those US dollars?

Check valves indeed are expensive, and they have poor flow. Ben, you should really consider exploring homemade valves, perhaps to sell in a store. I might try making one for my CPH, because I'll need at least one small check valve, but I'm not quite sure. I'm not quite sure why the valves are so long. 1/2" check valves have 1" long sockets on each side and 2" in the middle. Commercial water gun valves are tiny!

The problem is testing. Configurations, spring strength, seals and all that *could* be a problem. I doubt it though--the designs were pretty solid, and I know the springs should be weak enough to apply maybe a pound of force per inch of deflection. Something should stop the spring from being compressed more than half an inch.

High-flow valves would be welcome for the second check valve in piston pumpers if they use large nozzles. I'm actually considering trying a new type of check valve - the inflow and outflow are opened and closed as the pump moves back and forth. Unfortunately, you wouldn't be able to reverse directions in mid-stroke.

CROC · 03-28-2007, 04:57 PM

Nope, those prices are CAD, but they're still outrageous
In Canada, the brass check valves are really short in comparison to the PVC check valve.
When my homemade is complete, I will have paid ~$50 CAD on just check valves, and the gun will be so heavy, that I could use it to strengthen my arms after it's done (when it's empty)

mr. dude · 03-30-2007, 10:39 PM

That's the advantage of swing valves. They have great flow and are only about 2" long. They also cost half as much as spring-loaded valves.
Also, my riot blast stopped 'pooping'.

03-28-2007, 04:39 PM	#31
Silence Administrator Join Date: Apr 2006 Location: Virginia Posts: 3,293 UserID: 576	CROC, are those US dollars? Check valves indeed are expensive, and they have poor flow. Ben, you should really consider exploring homemade valves, perhaps to sell in a store. I might try making one for my CPH, because I'll need at least one small check valve, but I'm not quite sure. I'm not quite sure why the valves are so long. 1/2" check valves have 1" long sockets on each side and 2" in the middle. Commercial water gun valves are tiny! The problem is testing. Configurations, spring strength, seals and all that could be a problem. I doubt it though--the designs were pretty solid, and I know the springs should be weak enough to apply maybe a pound of force per inch of deflection. Something should stop the spring from being compressed more than half an inch. High-flow valves would be welcome for the second check valve in piston pumpers if they use large nozzles. I'm actually considering trying a new type of check valve - the inflow and outflow are opened and closed as the pump moves back and forth. Unfortunately, you wouldn't be able to reverse directions in mid-stroke. __________________ Forum rules

03-28-2007, 04:57 PM	#32
CROC Senior Member Join Date: Mar 2006 Location: Ontario, Canada (GTA) Posts: 291 UserID: 569	Nope, those prices are CAD, but they're still outrageous In Canada, the brass check valves are really short in comparison to the PVC check valve. When my homemade is complete, I will have paid ~$50 CAD on just check valves, and the gun will be so heavy, that I could use it to strengthen my arms after it's done (when it's empty) __________________ ~CROC~(c 'rock)n. -The master of ideas, and the occasional mod (Works with mr. dude) Mods: 3xA combat - CPS Turbine - Super Flash Flood - (working on CPH)

03-30-2007, 10:39 PM	#33
mr. dude Senior Member Join Date: Apr 2006 Posts: 127 UserID: 572	That's the advantage of swing valves. They have great flow and are only about 2" long. They also cost half as much as spring-loaded valves. Also, my riot blast stopped 'pooping'.

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