Quickest way to find bad check valve

[Keno]

I think I have a bad check valve in one or more of my bays. Hose blowing off flojet outlet, brand new flojet starts leaking air after 1 day. What is the quickest and easiest way to find the bad check valves?

 

[cbchevy4x4]

pull the tube off the flow jet outlet and start turning on functions in the bays, start with high pressure functions. when you got water going the wrong way in the ER you found the culprit.

 

[MEP001]

You might have the inlet pressure to the Flojet too high.

 

[Keno]

pull the tube off the flow jet outlet and start turning on functions in the bays, start with high pressure functions. when you got water going the wrong way in the ER you found the culprit.

Thanks for the response, I tried this earlier today and couldn’t find anything back feeding. Maybe its not a bad check valve.

 

[Keno]

You might have the inlet pressure to the Flojet too high.

I have it at about 65psi for tire cleaner based on various sources I found. Does that sound about right?

 

[MEP001]

65 is fine, but the symptom of air leaking doesn't in my experience correspond with a bad check valve. That will usually crack the plastic housing. If the regulator is bad, the pressure might creep up to 150-175 depending on your compressor.

 

[Keno]

65 is fine, but the symptom of air leaking doesn't in my experience correspond with a bad check valve. That will usually crack the plastic housing. If the regulator is bad, the pressure might creep up to 150-175 depending on your compressor.

Compressor is set at 80psi shut off. Local regulator for this flojet is brand new and set at 65.

A little more background on the situation. When we took over the site there was a g57 kalrez on there leaking air bad. I replaced it with a viton model, when I came in next day outlet line was blown off (could have been my rookie clamping skills with oetiker clamps), air was leaking out of flojet, and chemical all over the floor. Luckily flojet stalled out and had stopped pumping, or there would have been more water everywhere. I replaced with another viton unit and seems to be holding for last 2 days without line blowing off or flojet leaking air.