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Hey Glenn, In response to the Check ball one way valves.
The best thing I can say about them is they are rebuildable. And will not fail due to high heat and chemical attacks, aka oil.
My company uses All swagelok Fittings and check valves for our Offshore Hose reels. These systems are running upwards of 3k psi in hydraulic lines and air lines depending on the model of hose reel. I have personaly seen the Aeroquip and Swagelok check valves tested side by side on Baton chart Recorder.(dont know its exact name) It basicly tests hydraulic lines for flow back and pressure along with any leaks no matter how small, altho they do cost like 75$ each.
You can change the spring rates in these check valves for the PSI ratings you need them to Crack open, Full open and seat pressure. Some models even have mesh screens in them to collect any debris that maybe traveling through them. I see this as inshurance Incase the sping ever fails and breaks apart.
IF I was going moneys no object build I would use them Over ANY PCV or plastic viton seal check valve.
kinda went off there. O well...
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