Top Shelf Bronze Double Check Backflow Valve With Fast Quarter Turn Shutoff And Industrial Grade Durability Designed As A Reliable Workhorse For Household Water Line Protection Rated At 175 Pounds Per Square Inch

Compact single bronze backflow valve for residential water safety
✔️ Febco Series 850 runs up to 175 PSI with silicone seals and springs

This double check backflow valve assembly acts as a dependable guard against unwanted water reversal in home pipes. You typically mount it right after your main meter to stop contaminated runoff from sucking back into your fresh supply. The fast quarter turn shutoff makes routine maintenance quick without draining the whole system. Built for steady daily service, this single unit handles standard household pressure without fuss and keeps your drinking water clean.

✅ Max operating pressure stands at 175 PSI for standard home lines
✅ Temp range covers 32 to 140 degrees without warping
✅ Solid bronze body resists corrosion and handles heavy flow
✅ NPT threaded fittings match standard ANSI B1.20.5 pipes
✅ Stainless steel springs and silicone elastomers ensure long life

💡 What does a double check valve actually do to protect indoor water quality?

The main job is blocking dirty fluids from migrating into clean supply lines during sudden pressure drops.

- Creates two independent closure mechanisms to catch any minor leaks before they reach your tap

- Keeps external sediment and rust trapped downstream so municipal storage tanks stay sterile

- Works handy for backyard sprinkler setups plus basement tie ins without needing constant recalibration

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