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Jandy 7512 90-Degree, 2-Inch to 2-1/2-Inch Check Valve
|Price:||$40.99 & FREE Shipping. Details|
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- Clear lid with red seal for easy inspection
- Unique swing/spring design for both return and intake water
- Disassembles for cleaning debris
- Made from durable CPVC
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|Item Dimensions||4 x 5.5 x 5.5 inches|
|Shipping Weight||1.3 pounds|
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|Sold By||Amazon.com||Amazon.com||Pool Supply Warehouse||Amazon.com||Amazon.com||Amazon.com|
|Item Dimensions||5.5 x 5.5 x 4 in||7 x 7 x 2 in||5 x 7 x 6 in||12 x 28 x 15 in||5 x 17.75 x 10 in||1 x 1 x 1 in|
Constructed of the same tough CPVC material used on the NeverLube. Our Check Valve’s clear lid and red seal plate let you easily see and access debris. It features a unique swing/spring design for both return and intake water. The diverter swings completely open with minimal back pressure and no water turbulence. There is minimal hydraulic loss. If you see any debris build up it is easy to disassemble and clean. Re-assembly is easy as well. This product is backed by a 1-year manufacturer's warranty.
From the Manufacturer
Jandy 90-degree, 2-inch to 2.5-inch Check Valve
Top customer reviews
The valves are position-sensitive. The check mechanism is a spring-loaded flapper valve which needs to be oriented such that when the system is off, the weight of the water pushes on the flapper and helps to hold it closed. The instruction sheet recommends 18" of head i.e. the highest level of water pressing down on the flapper. This was a surprise to me but in actual tests, I found that it indeed leaked until about 6-7" of water column was present. My setup uses these in the pump feed lines (pool/spa drains) which are above the water level of the pool to make it easier for the pump to start. The filter provides about 34" of static head so I'm good, but that was a surprise. I followed the original design, placing the checks above the inline valves.. If I were doing it over again, I'd put the checks on the bottom below the inline valves.. but.. inspecting the valve bodies, they seem interchangeable..
Because of the head requirements, I could not use it between an inline chlorinator and the heater to keep chlorine from leaking towards the heater when the pumps were off. The hot setup for that is a Rainbow R172288.
Finding what glue to use was an issue. After consults with Jandy and Oater, I used Oatey #30821 All Purpose Cement to connect the PVC pipes to the CPVC valves after priming with #30756 primer. I also was told that any PVC cement would work so actually made up a test manifold with different glues and pipe materials and found that.. either the all-purpose or standard clear PVC glue (Oatey 31013) worked up to my test pressure of 80 PSI. So far, no leaks in my pool. The all-purpose glue has a longer work-time than the clear PVC stuff so if you are doing a complex joint, that may be a plus.
My old Jandy 'Gray' valves lasted 20 years in the Texas sun and could have gone on longer. The new ones have all of the earmarks of the same kind of quality.
FWIW I bought the 2 - 2 1/2 valves for 2" plumbing for the marginally better flow rates. My pool was plumbed with 2" pipe. From an INSTALL point of view, the 1 1/2 - 2" might be easier for a 2" system since the pipes butt and you use a 2" connector, providing the twist needed to glue. For 2- 2 1/2" valves with a 2" system, the pipe goes into the valve and must be 'twistable' in your setup to glue. Makes the geometry a bit more involved.
Overall, Jandy is as good as it gets. My 19 year-old 'gray' Jandys were working when I sawed them off to replace the plumbing.
Upon review of VM Solutions return policy, I found that VM Solutions charges a 25% restocking fee. This combined with the return shipping cost makes the return policy economically prohibitive. I feel like VM Solutions has done a disservice to the consumer during the worst economic time in history. Amazon.com needs to use a better source.
After doing a bit more research I found a better solution to my check valve problem. Look in to a Magna Check Valve if you don't have enough head pressure to keep the check valve closed when the spa pump is off. The Magna Check can be used in almost any application because they use magnets to keep the valve closed when the pump is off. And... the cost is very comparable to the