Zoeller 30-0041 50 psi PVC 2-Port Check Valve, 1-1/2" White

Built well, VERY quiet compared to traditional flapper check valve, I like the threaded couplers because it is faster to disassemble then hose clamps. Time will tell if it is good quality and stays clear, but I like it so far.

This is a quality product that really works well. I had a cheap check valve that failed and caused my pedestal sump pump to run constantly, causing it to overheat. Luckily I was home at the time and noticed the smell / smoke before it was a real problem. The old check valve had a water hammer eliminator build in, which worked for a while. After some time, it no longer was quiet. I installed the Zoeller check valve and it was very quiet - quieter than the old one with the built in water hammer eliminator. I am very happy with this product and highly recommend it. And, it is made in the USA. Well worth the price.

I never knew a check valve could be this silent. I bought and installed this for my father in-law to give him visible proof the sump pump was ejecting the water because the sump lid is sealed, and this valve is transparent. I had no idea it was also so silent they cannot hear the sump running from upstairs. I recommend it for anyone that's tired of hearing the clunking of their sump check valve during the rainy season.

It makes it so easy when I have to change pumps. I just unscrew at pump side and install my new pump by screwing new pump in. Also nice to be able to see the functionality of valve.

This check valve with union slip port fittings saves work. It is very quite. Nice to see the flow through the clear valve body. I have used the opaque is the past and this clear valve is of the same quality and functionality.

This check valve is easy to install and replace if needed. It functions well as it is very quiet.One word of caution, be sure the seal is properly seated before tightening and turning the pump on. I deducted one star because the seal on my unit kept falling out causing water to spray all over. It worked fine after seating it properly.

Replaced sump pump and figured might as well do the check valve at the same time. I only buy Zoeller when possible, and this check valve was cool because the old one was dark green plastic and you couldn't see anything. Over time, it was starting to leak a bit, but with the new one, you can see the valve, which is so cool. And if you have any kind of water "hammer" when the pump stops, this will make it quiet. Although you need PVC cement rather than rubber union with clamps, it looks much cleaner and is easier to remove as you just unscrew the endcaps and it slips in/out. Great product.

Seriously dead quiet. I had a noise reducing check valve from home depot and decided to replace it with this one for two reasons. One, I have a Zoeller pump. If the quality of their check valves is the same as their pump, then its worth every penny. Seriously, go to home depot and pick up a sump pump and look at it. Then go to a plumbing supply house and look a Zoeller. Its night and day. Secondly, the check valve from home depot was a 1 1/4" valve. So I had to reduce from 1 1/2" to 1 1/4" then back to 1 1/4" causing a restriction in flow and reducing the volume of water I was pumping out of my basement. And I need to get every gallon I can out as fast as possible. There must be a natural spring under my house or something because my pump runs constantly. In bad storms it's so bad the float switch stays up for hours and the pump runs continuously. So as you can imagine I rely heavily on my sump system. I couldn't recommend this enough!