i have a utility sink in my basement with an in-line pump (not reservoir type) that pumps about 5′ vertically with white pvc into the soil stack via a “u” trap. the pump is rated for 14′ vertical feet, so it should have enough power.
there was little or no movement of water, so i replaced the pump, but the problem has not been fixed. in the line from the pump to the stack is a black pvc fitting 2″ long with arrows on the side indicating flow, and another gray fitting that looks like some sort of check valve. i assume that these are causing blockage somehow as when i took them apart, you couldn’t see thru them.
should i replace them?, and do i even need them (the check/backflow preventers)as i have a trap? what’s the best piece for pvc to prevent backflow?
again, the progression is sink/pump/check valve/pvc pipe/”u” trap/soil stack (horizontal at this point)
thanks
Replies
You bet your bippy it's necessary. To see if the problem is the check valve, take it back out of the line and scab in a temporary connection, then run the pump and see if it flows properly.
Think about what you're asking. There are toilets and washing machines upstairs. If there is a pipe blockage down stream, the water will take the path of least resistance, and without a check valve that means all the backup empties into your laundry sink. The p-trap only keep the sewer gas out.
"When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it." T. Roosevelt
got it....YUCK!any suggestions as to the specific type? brand?thanks for the help
Watts with a flapper..
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