Does this have a check valve to make priming the pump easy?
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.
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.
718561
Depends on how you set it up. I always drain mine after use and yes I prime it each time. If you have a closed system with a check valve so the pump always remains full then you should have no problem.
1396901
It does not and is a great little pump. We also added a timer so we don't have to fool w/ it.
2145218
Yes, it comes with a Little Giant CV-10 screw in check valve to prevent water in the line from draining back down.
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
737057
It;s a very good pump but it is NOT self priming. I use it in my in-ground pool which I converted to a fish pond.
821899
As the previous person suggested, you've got to follow the instructions for priming the machine before you use it the first time (or any time the pump runs "dry"...like if you empty the water reservoir all the way while the pump is on). If you've run through the priming sequence and you still have the problem, there is a possibility that your machine has a bad pump. Some other reviewers insisted their machines arrived with bad pumps.
2076975
The check valve is on the side where chlorine goes out....it is built in the fitting...all have it
67954
It has a check valve but that's it. It is NOT a Schrader Valve like you have on your tires.
1326069
Yes. Good cap and I believe the pump has a lock down, but I don't have one handy to check to be certain.
2133026
No....it's a water hammer preventer. Need a check valve to prevent backflow
1981540
I agree with the first answer. I had mine installed by a professional plumber and he requested I get two check valves for the installation and each pump has its own check pump.
1040533
Yes, there is a small bleed off button on the side that you press. No need to un hook from the valve to do it.
1280735
the pump is not self priming. it is rated for out doors ,but build a shelter over it.
58635
Yes, you need tubing, an air stone or other device to create small bubbles and a check valve to prevent water from back flowing into the pump and ruining it.
674582
my previous post about check valve, might be in pump internally and not separate unit