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Your cart is empty.A continuous pressure type with intermediate vent. Particularly recommended for boiler feed lines to prevent backflow should supply pressure fall below system pressure. Primary check valve features rubber-to-rubber seating for tight closure. Leakage is vented to atmosphere should the downstream check foul. Brass body with stainless steel and durable rubber working parts. Female union connections. Maximum temp. 225°F. No. 9D Female union inlet and outlet connections.
Christopher L Collins
Reviewed in the United States on August 10, 2024
Exactly as advertised, delivered 2 days early
James J. Antosh
Reviewed in the United States on October 22, 2024
Good quality. Worked well. Would buy again.
Mark D.
Reviewed in Canada on September 15, 2023
Excellent Thanks.
Paul Haubrich
Reviewed in the United States on May 11, 2023
The preventer was delivered ahead of schedule and was same good quality as the 35 year old device it replaced.
George Brown
Reviewed in Canada on June 23, 2022
This replacement Watts backflow preventer is equally as good as the one it replaced.
Client d'
Reviewed in Canada on January 7, 2022
the piece sinks at day 1
Customer
Reviewed in the United States on September 24, 2018
Exactly what I wanted at a fair price and fast shipping
Brently
Reviewed in the United States on July 29, 2017
Works good but if it's like the last one will last about 5 years till it leaks. Way overpriced for what it is
Springbok
Reviewed in the United States on October 1, 2016
Installation was easy with the union and it worked form the start without issues. Nice to have my 124 PSI water pressure reduced to 45 PSI.
D P K
Reviewed in the United States on April 5, 2016
I installed one many (7+) years ago as required for a community well system, which is a good thing. Recently water flow caused it to give off a whining sound. It still back-checked but I replaced it since I had originally brought two to have a spare. Am happy to see it still available and am buying another to keep a back up since check valves don't normally last this long in a hard water environment. The soft seat material was still pliable and valve appears in good functional condition. If a new spare was not available I would take the old valve further apart to clean it for re-installation. Good product I hope it stays around for a while.
Engineer85
Reviewed in the United States on April 27, 2016
This unit appears to be working very well. At first it seems to have a very slow drip leak, but that stopped. It was a little difficult to tighten for a rookie plumber, but it is doing the job nicely. I would buy it again and use Teflon Tape as I did in my installation.
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