Time to Check those Check Valves

florida joe

Well-Known Member
Originally Posted by Bang Guy
http:///forum/post/3244252
Check valves work by the reverse flow water forcing a ball or a flap to seal the tubing and rely on the weight of the water to keep it sealed until normal waterflow is restored.
Spirorbidae thrive in the high flow areas of the check valve and grow on the seals and on the ball or flap. It only takes a few of these animals to prevent the check valve from sealing completely. Sometimes it will just be a slow drip but if they congregate on the seal then there can be a steady stream of water that is let through the valve.
I am going to have to respectfully disagree with my friend Bang I use a Thermoplastic spring check valves which gives a positive seal even with no back-pressure
Note I made sure I used a marine engine check valve, the ones that are used in the lines that use Saltwater as the cooling medium
 

bang guy

Moderator
Originally Posted by florida joe
http:///forum/post/3244289
I am going to have to respectfully disagree with my friend Bang I use a Thermoplastic spring check valves which gives a positive seal even with no back-pressure
Note I made sure I used a marine engine check valve, the ones that are used in the lines that use Saltwater as the cooling medium

Ahhh, yes. I had forgotten about the positive flow shutoff. Is there a significant flow reduction with them?
 

florida joe

Well-Known Member
Originally Posted by Bang Guy
http:///forum/post/3244341
Ahhh, yes. I had forgotten about the positive flow shutoff. Is there a significant flow reduction with them?
Bang there does not seem to be BUT one has to remember that they are putting an added load on there pump above the head pressure
Joe
 
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