Does it have a check valve? I.e. Will it allow water to back through once turned off?
2075684
Don't think it has a valve. Once all water is pumped out the remaining water in the out house (going up) comes back to the bilge area.
2002647
Neil, if you are talking about the Water turn off valve, no. That is a separate item.
2176875
The faucet needs to be left in the on position. It wont run constantly, just when the water level drops. The valve will allow it too fill and then shut back off.
1015506
Yes, there are 3 settings for the outflow valve: full, restricted, and off. It's that latter setting that enables "pause." The restricted setting is useful for keeping the hot water on the grounds longer, leading to richer flavor.
1467077
Yes, it remains off. You will have to manually turn it back on if your water cools down.
1604388
There's no check valve but I've never experienced a problem with starting waterflow or maintaining it. By the way, this pump is probably best use for tanks 55 gallons or less.
2076977
Not check valve included, i did not install one. Not need as one side is pressure the other side discharge.
1876762
no it does not it has a screw on plug on the bottom that from time to time the system will let you know the water level is full and it will shut off the unit and you will have to drain the system, the other thing you can do is to place a drain line and avoid the hassle all together.
656382
No it doesn't allow liquid to pass when it's off. I have gotten some liquid to pass through when it's off but it was very hard and needed a lot of presser.
206450
No. This is a manual switch valve, like a regular ball valve, after running mine for a year the by pass valve is extremely hard to to turn on and off, and they are not made to last either .
1278905
No. It is only a simple check valve for a water hose type system. If you want to reduce the water pressure, then you would need to insert a restrictive rubber washer or else get a pressure regulator.
2148948
basically a check valve does two things. If your exiting line from the pump runs level or slightly uphill, the check valve should keep the outflow on the exit side from coming back through the pump on shutdown. It would also prevent inflow from the outside back into the pump in a case where you have the pump dumping into an area that could collect outside water above the level of the exit. Both of these situations could be avoided by positioning the pump and the outflow line such that water would only flow away from the pump and to a lowspot that is sure to be lower than the pump outlet. Particularly if you are only using it several times per year. So have at it but keep the flow going with gravity not against it.
2154157
No turn water on and engage the spray function. Once you turn off the water it will default back to stream or you can press the button back.
1329711
Yes. Mine turns off automatically if I have the water running for a long time. I actually like this feature. It does save water.
1119348
Yes it does. Mine came w/ shut off valves also. I had plenty of tubing also. Pretty easy to set up.
1024643
Yes it has an on off switch of sorts right at the faucet.It is designed to always switch back to just normal water outlet each time you turn the water off but you can turn it on/off manually as well.
2252823
No. It's an on/off valve. We have it hooked up to our water purifier for drinking water.