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Added a swing valve to my 10-inch discharge line last month
Took maybe 3 hours to weld on and the difference in backflow at shutdown was night and day. Used to get about 5 feet of slurry dumping back into the pit every time I killed the pump. Now it's maybe a few inches. Anyone else running swing valves on their bigger lines or sticking with check valves?
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leebrown4mo ago
Huh, I've had the exact opposite luck with swing valves on big lines... Tried one on my 8-inch discharge a few years back and the flapper kept sticking halfway open on startup, killed my flow rate bad. Went back to a simple check valve and it's been bulletproof ever since...
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wadepalmer4mo ago
That "sticking halfway open" thing reminds me of a time I had a gate valve lock up so bad we had to torch it off.
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