Spraying from the RTV?

[David69]

sha zammm ! Maybe you can find a used one !

EDIT this may be an option on a place to look for the size you need... http://mkrittenhouse.com/us/hypro-surge-tank-pulsation-dampener and I think it is the same picture !! for 200 less ! hummmm

You are the Farmer of the Day ! Thank you!


Piston pumps propel liquid by a piston moving in a cylinder. The intake stroke draws the liquid in through one valve, and the output stroke forces the liquid out through another valve. Piston pumps should have either an internal or external air chamber (surge tank) to dampen pulsations in the liquid flow associated with each pump stroke. Without the surge tank, the sprayer will pulse rather than spray a steady stream.
Piston pumps develop high pressures that can increase the sprayer's versatility. However, the relative capacity of piston pumps is often low. Because the higher-volume piston pumps are expensive, mechanical agitation is normally used instead of hydraulic agitation.

 

[bordercollie]

Always glad to help if I can. collie

 

[shinnery]

Since fluid doesn't compress and air does, a surge tank will only work while it is mostly full of air. If it gets fluid locked it is no longer working to smooth the flow. the nice thing about the surge tank you are looking at is it appears to have a diaphram to keep air in the upper part of the tank and prevent fluid locking. The schrade valve in the top is to monitor the air pressure in the upper part of the tank and also add more air if working in a higher pressure system.
Bryce

 

[jonpbarker]

David,
Looks like you got you a nice sprayer...I am not familiar with the hydraulic pump system..but luckily Bryce has some insight with the surge issue.
As far as your two pics...looks like the top spin knob agitates...but where does the small hose go on the little "T" handle one?

Jon

 

[David69]

David,
Looks like you got you a nice sprayer...I am not familiar with the hydraulic pump system..but luckily Bryce has some insight with the surge issue.
As far as your two pics...looks like the top spin knob agitates...but where does the small hose go on the little "T" handle one?

Jon

The person that built this did a wonderful job but I am finding a few minor mistakes that if plumbed differently would make it work the way it was intended. The turning knob is pressure relief valve that has a female bypass port on it that would protect the system by opening up and flowing overly high pressures back into the tank. He had it hooked up directly to the jet agitator on the bottom of the tank. It never agitated and that puzzled me. Pressure should go directly to the jet agitator in the tank without this P R valve. I removed the PR valve. and it works like it should. The other T valve I believe is another pressure control valve. He had the 1/4' gauge port plumbed back into the top of the lid where water would flow when the pump was on. A pressure gauge should go there instead. Little by little I am figuring this out. The only negative thing about a hydraulic piston pump is it does pulsate. I am following the link by Collie to get a new one to install. I have hydraulics on the RTV so I might as well utilize it with this spray unit with the piston pump. They are expensive little pumps.