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What steps are necessary to change out the Wilkins 375 backflow preventer? I have just started studying the possibility of changing out the Febco 825Ys at my site with the Wilkins 375. It seems like the Wilkins (1) main body should be easier to change out; (2) will permit easier replacement of the isolation (ball) valves; (3) has cheaper re ...
One of the new building code rules, is that if a plumber does the stub out from the house at the time of building a new home, they must install a backflow preventer. Certain developments are getting all Apollo/Conbraco PVBs due to the plumbers, and I've never carried parts for one. I carry minimal Watts or Wilkins parts either.
Wilkins 975XL backflow problem. Jump to Latest 26K views 24 ... That is a Reduced Pressure Backflow, take ...
We have always installed Watts RPZ backflow preventers - usually 3/4" for residentials. While talking to my supplier, I learned that a Wilkins RPZ of the same size is substantially cheaper - $40 cheaper to be exact. I just wanted to get some input on why that is.
I had a Watts PVB/backflow preventer crack and I want to order a replacement, but the same part number (800M4QT 1") won't ship for 2-3 days. There's a Wilkins 1-720A that I can get in a day or two that looks compatible, but I'm just a DIY homeowner so I don't know for sure.
The Double Check backflow preventer is not rated for irrigation applications according to the USC Cross-Connection Manual. A Reduced Pressure Zone backflow preventer or Pressure Vacuum Breaker are rated for irrigation applications.
Also, backflow preventers are rated to handle flows equivalent to the same size water meter. I have no problem seeing a one-inch Wilkins PVB on a 1-1/2 inch line running 40+ gpm. Many product lines used identical castings for both 3/4 and 1 inch RPZs, so no big deal if you saw a 3/4-inch RPZ on a one-inch line.
The property in question has several dozen 2-inch and 1.5-inch Febco 825Y (so RPZ type) backflow preventers. The property is in Albuquerque, NM. I have a copy of the manufacturer's procedure for winterizing. I do not think it has ever been followed. Every year after a bad winter, repairs have been extensive and expensive. 1.
(F) Backflow prevention devices shall be required to protect the water supply from contamination by the irrigation system. A project applicant shall refer to the applicable local agency code (i.e., public health) for additional backflow prevention requirements.
We insulate them by local rules etc. As Sprinkus mentioned, one thing we are starting to use is the freeze protection valves put downtream of the backflow device that starts to drip when the water temperatures get below 35*. This puts the device in a flow condition and allows the warm ground water to refill the device.