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Your cart is empty.The 3/4 in. 350 Double Check Valve Assembly is used in low health hazard, non-potable water applications for protection against both backsiphonage and backpressure of polluted water. A favorite for irrigation contractors, the patented and innovative EZSwap removable pressure vessel allows for simple, cost-effective maintenance and repairs, straightforward line flushing, quick winterization, and water savings. Its stainless steel shut-off valve handles, hardware, and struts are corrosion-resistant and the durable UV resistant reinforced nylon EZSwap Pressure Vessel resists corrosion and mineral build-up to better withstand harsh outdoor conditions.
Devin
Reviewed in the United States on August 19, 2024
Fit perfectly replacing an older unit!
Clayton Johnson
Reviewed in the United States on August 17, 2024
works as listed and is far less expensive than one I was replacing
Jennifer S. Ho
Reviewed in the United States on August 12, 2023
To pass local requirements it needed to include letters RPP (Reduced Pressure Principal) to be a true back-flow preventer valve. Zern does have those, as do other brands/models with those letters. The local Department of Water Supply said it was not a back-flow preventer as required here in Hilo, Hawaii. This unit was not acceptable for connecting to the municipal water supply as backflow contamination could happen. So why does it have backflow listed in the title? I guess this model is OK in an agricultural situation like from your own water collection.
mtkohlersr
Reviewed in the United States on January 18, 2023
I'm confident in the plastic but my clients don't especially like the look. High quality with a cheap looking exterior.
Customer
Reviewed in the United States on July 24, 2022
The assembly was exactly as advertised and works great. I had it professionally installed to meet city requirements, and it's worked fine so far. More time will tell just how great it really is.
J. Bell
Reviewed in the United States on November 3, 2022
This did exactly what it was supposed to do. The price was less than half what the plumber wanted to charge.
Kelvin Gilmore
Reviewed in the United States on January 4, 2022
The exact Same part as repairman but a lot less than what he was selling it for. Great price for a good product.
Mr clean
Reviewed in the United States on September 9, 2021
It is a good name brand and is working well.
Lyle
Reviewed in Canada on August 4, 2021
Cheaper than paying retail at the plumbing supplier.
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