Do I need to purchase a second check valve for the back up pump?
1127626
It depends on where you have the check valve installed. If you have it inline after both pumps meet, then no you don't. If your check valve is attached to the main pump, then yes you would need another check valve.
1127627
It has a built in check valve, although not a very good one. Use a rubber splice when connecting to the tee, in case you ever have to replace the check valve.
1127628
Nope, you only need one for the system to work. It comes with a check valve, however it's cheap and you would be better off buying a true zoeller one.
1883663
Most of what I've read and seen have the check valve slightly above ground level. Do your install with a union so that you can remove (i.e., replace) things without having to cut pipe. Remember to drill a small (1/8" or 3/16") in the pipe between the pump and the check valve to prevent airlocks. Drill so that the 'leak' squirts downward! That said, some people argue to put the check valve immediately above the pump (below ground level). Installing just above the pump would minimize the amount of water leaking back into the sump (but we're talking less than a quart, I'd guess.). Mine is installed just above ground level. Most of what I've read and seen have the check valve slightly above ground level. Do your install with a union so that you can remove (i.e., replace) things without having to cut pipe. Remember to drill a small (1/8" or 3/16") in the pipe between the pump and the check valve to prevent airlocks. Drill so that the 'leak' squirts downward! That said, some people argue to put the check valve immediately above the pump (below ground level). Installing just above the pump would minimize the amount of water leaking back into the sump (but we're talking less than a quart, I'd guess.).... » Read More Most of what I've read and seen have the check valve slightly above ground level. Do your install with a union so that you can remove (i.e., replace) things without having to cut pipe. Remember to drill a small (1/8" or 3/16") in the pipe between the pump and the check valve to prevent airlocks. Drill so that the 'leak' squirts downward! That said, some people argue to put the check valve immediately above the pump (below ground level). Installing just above the pump would minimize the amount of water leaking back into the sump (but we're talking less than a quart, I'd guess.). Mine is installed just above ground level. « Show Less
1238988
A pressure relief valve, which was not included and I can't find one locally, so I asked the company for advise, but so far they have NOT answered.
495221
Not sure why or how you would install more than one valve for this system. Read the instruction manual to understand function of the valve.
924978
I believe the g54 is the outer case only without the internal mechanism. If your back up valve is not functioning at all you probably need to get the g52 which includes the inner working parts. If the outer case is cracked but the valve still works the g54 might be okay, but I would just get the g52 and replace the whole thing just to be sure. I replaced mine last year.
565588
You have to buy a flange set, search Amazon for: "grundfos flange set", or if you're replacing a pump it will already have flanges connected to the pipe.
1228815
The valve is not included. Please see the specs for the correct valve model.
1400069
I installed this pump and check valve to a existing system. I replaced the check valve with a new one and it didn't come with the pump. We used her tank. She uses the water for her yard like you and the last time I talked to her she was very happy with the pump. The check valve I bought was the TC2505LF 1-1/4-Inch Check Valve. It was a little more expensive then another one but just wanted to do this once and be done.
145252
Pump includes two check-valves, one on on the backup pump and one on the primary pump. They are actually located at the bottom, where the white PVC pipe connects to the pumps (just under the rubber pipes). You can see the diaphragms if you look down the pipes before you have installed it. Note that the instructions included are incorrect in several ways because Wayne sends the instructions for both devices, not the components as a whole (which includes the check valves). In my case, I left my existing check-valve as an extra pre-caution and haven't had any issues. As an aside, the instructions also indicate that you need a weep hole. However, Wayne's website indicates that one is not necessary because "Wayne Sump Pumps are designed with a top suction inlet. This design naturaly [sic] prevents airlocking [sic] which eliminates the need for drilling a weep hole." See https://waynewatersystems.custhelp.com/app/answers/detail/a_id/13/session/L3RpbWUvMTQxNTg2MTkxNi9zaWQvRjY0RW5pN20%3D
692516
I think you need to put a check valve on the line that prevents the water from backing up.
989588
Hi John,Yes, the Polaris Vac-Sweep 360 comes with the back up valve. Thanks for reaching out. If you have any other questions, please contact our product support team at (800) 822-7933 or productsupport@zodiac.com. Best,JuliePolaris
395867
You need to clean or remove all together the check valve that is located on the and where the faucet's tube connects to water pipe.
1686753
No, there are no check valves or quick seal fittings. you get the manifold with gauges and hose adapter fittings, red-yellow-blue 1/4" flare fitting hoses, and a 3/8" flared hose for evacuation pump connection.
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.
145251
Mine came with 2 check valves. One for each centrifugal pump. Otherwise with only a single pump running it would be back flowing out the other pump. A third check valve in the line past these can't hurt but shouldn't be necessary...
437299
You need a flood guard with a larger diameter or place a bushing inside the drain that fits the current available check valve.
1280737
No, you need to prime it. A check valve at the end of the intake hose/pipe means you will only need to prime it once, however. It is O.K. for outdoor, but I use a small enclosure over the top. It must be protected from freezing. Wayne pumps are tops in my book, and I have used dozens of pumps.