Should a bilge pump have a check valve?
Parts Needed. And no, you should not use a check valve in the bilge pump line to prevent the back flow of water. The use of a check valve is not recommended due to the potential for sticking and causing the pumping system to fail. Therefore, it’s a good idea to remove as much of that water as possible.
Where should a sump pump check valve be located?
Location. The most suitable location for a sump pump check valve is close to the floor level to minimize the volume of water that drains back at the end of each pumping cycle and it is a convenient location for easy servicing or replacement of the valve.
Is it OK to have 2 check valves sump pump?
Using a second check valve just in case the one on the pump fails is never a good idea. If the check on the pump fails, it must be replaced. Having a second check valve will only mask the problem of the first check valve, and cause water hammer and possible contamination in the process.
Is a check valve required on a sump pump?
Without a sump pump check valve in place, all the water in the discharge pipe empties back into the sump pump pit liner. This causes the water level in the liner to rise. Higher water levels in the sump pit liner causes the pump to run more often, increasing energy costs.
What is a check valve on a boat?
Check valves are commonly found in several of the systems aboard a sailboat devoted to making sure that various liquids flow in the directions they’re supposed to. These valves are usually found in water and some sanitation systems and in most water and effluent pumps.
How high should a check valve be on a sump pump?
Best height ( unless owner’s manual states otherwise) is two to three feet off of the top of the sump pit. This way your sump pump motor doesn’t have to work as hard as when your check valve is in lower position. It will open easier due to the reduced weight of water above it.
Do check valves fail open or closed?
One, check valves are prone to jamming in the open position, thereby becoming an uncheck valve of sorts. Two, they are prone to jamming in the closed position, preventing water flow in any direction. If the check valve is stuck open, the pump runs and pumps just fine; however, it won’t prevent backflow or flooding.