Rated 1.0 out of 5 by 5
Rated 1.0 out of 5.0 by DCA DO NOT BUY.
As all the other reviews state, this product DOES NOT WORK. I unfortunately didn't read the reviews before not only purchasing, but installing. I installed, they prevented the back flow, however they also restricted flow going out as well. I had to remove them, go all the way back into HD (45 min drive) and buy different ones. I suggest the ones with flappers instead of this style.
August 28, 2016
Rated 1.0 out of 5.0 by Stephs Buyer Beware!
This check-valve is designed to fail! Will check reverse flow OK, but valve will cut off intended water flow on anything but very low flow applications. In m my application running max 60 psi from well pump, it allowed only 20% flow. Look inside outlet opening and manually push valve shut with your finger from inlet side and you will see the spring loaded floating valve pushing against the housing where it tapers down to the outlet, thus restricting flow. Had to trash this unit and buy a competitor's unit.
March 28, 2016
Rated 1.0 out of 5.0 by installcheckvalveagain Do Not Buy
Spent 16-hours digging-up and replacing my sprinkler system manifold. Installed this valve to replace an existing. Water will pass through the valve at a trickle but as soon as I turn the flow up just slightly the check valve stops the flow. This product failed for me and I now need to start all over...but not with this valve for sure. Do not buy.
March 23, 2015
Rated 1.0 out of 5.0 by Bdesign Cannot handle heat
These are worthless. First one expanded and leaked at the manufacturers seam after outside temperatures exceeding 100 degrees. Replaced with same kind and 2 months later had another week of temperatures over 100 and it expanded and broke at the seam. These were installed inground in a valve box with no exposure to sun. Don't waste your money.
September 21, 2014
Rated 1.0 out of 5.0 by GLENN DIRECTION OF FLOW HAS STOPPED WORKING.
AFTER LESS THEN 2 MONTHS OF DAILY USE THE CHECK VALVE HAS PLUGGED ITSELF. WHEN A LARGE VOLUME OF WATER STARTS TO MOVE THRU THE CHECK VALVE THE VALVES SOMEHOW CREATES A VACUUM LOCK AND NO LONGER ALLOWS WATER TO MOVE THRU THE VALVE.
July 12, 2014