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MANUALS (2)
Product Highlights
Description
Maximum Working Pressure: 175psi (12 bar)
Series LF7R Lead Free Dual Check Valves prevent the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets. It consists of a Lead Free brass body construction, with two compact replaceable plastic check modules, and stainless steel springs. Series LF7R is designed for non-health hazard residential water system containment, continuous pressure applications. It is installed immediately downstream of the residential water meter, in a vertical or horizontal position. Check with local inspection authorities for installation requirements.
Specs
| Connection Type: | Union FNPT x FNPT |
|---|---|
| Size: | 3/4" |
| Material: | Bronze |
| Max Pressure (PSI): | 150 |
| Max Temp (F): | 180°F |
| Min Temp (F): | 33°F |
| Length (Inches): | 3-11/16" |
| Width (Inches): | 1-7/8" |
| Lead Free: | Yes |
| Connection Method: | Threaded |
Questions?
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Product Reviews
I would buy again
you guys are the best period. no body comes even close .
Code-compliant BFP
Just did
Simple and works.
I would buy this product again and again
It's great for homes if requiard to install backflow
I would purchase from this company again
I would buy this product again
Had the Product, Great Service!
Product Q&A
5 QuestionsQ: where does the shut off valve go ? before or after the preventer?
Asked by keith the cable guy 13 years ago
Add your answer
Go to this old house web site and search for water powered sump pump and watch video it shows everything
It goes before, so that the preventer can be replaced or serviced at a later date if needed.
The master shut off valve goes before the back flow preventer. This way, the back flow preventer can be changed or repaired. Make sure you install an expansion tank in the system to prevent overpressure from your water heater. This is a necessity with backflow preventers, otherwise as the water expands from the water heater, the system pressure will increase until the relief valve on the water heater opens.
Q: How often should this valve be replaced -- if ever? Thank you.
Asked by Mike 14 years ago
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The valve should be replaced when it fails - the only way to verify this with this style of valve is to install a ball valve with a drain between the valve and the water supply and check the valve periodically. Most people install the valve and forget about it.
In my opinion it is fine as long as it works. But there may be local codes for the maintenance of this check valve. Carol Pearson
Basically never. Phelps Clarke
Mike, I am not a licensed plumr , but under normal conditions this valve should give you years of trouble free service, as they are of brass construction and have a dual ck. valve inside. I have 3 installed in my system, and I soldered them in place (another words they are permanently installed), you don't have to go this route, they make them threaded so you can remove them if you have to, its your prerogative . If you do sweat it in, first take the valve body apart, keep track the way you desassembled it and put these pieces aside for now. Clean both sides of the valves brass body with an internal metal brush, apply flux, solder it in place, let cool, apply plumbers grease to the removed "o" rings, and the inside of the valve's body you put aside before, and reassemble it in the removed order. Tighten the brass nut that holds both valve body parts together, pressurize & ck for leaks. I believe Watts also sells the internal packing if you have to replace them. Hope this helped you a little, and as I mentioned, I am not a plumr by profession, best thing, contact Watts for their advise, they are the ones who make the valve. Good luck.
Q: what ASSE # does this meet?
Asked by Anonymous 14 years ago
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Verified Reply- PexSupply StaffPlease refer to the link below: http://media2.wattswater.com/ASSE-WBF-00035.pdf
ASSE 1024
ASSE #1024 Parrie Willette, Project Manager
Q: Can I put a 3/4" pex fitting on outlet side. And if so what brand or kind. Will copper fitting work
Asked by 15 years ago
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Verified Reply- PexSupply StaffYes, you can use a PEX or copper fitting that has 3/4" male threads (see parts H030750 and WP4-12).
Q: Is this a thread or sweat on type. I need sweat.
Asked by Jim 15 years ago
Add your answer
Verified Reply- PexSupply StaffThis is a threaded unit. It has Female Union NPT x Female NPT connections.