Febco has been making backflow prevention equipment for decades. The LF850 Double Check Valve Assembly is built for one specific job: keeping contaminated water from flowing backward into your clean supply. It’s a workhorse for non-health hazard systems like irrigation, fire sprinklers, and industrial lines where you need reliable protection without the complexity of a reduced pressure zone device.

The lead-free bronze body feels substantial in hand and resists corrosion better than standard brass. Both check valves are spring-loaded, so they close independently even if one fails or gets debris lodged. The quarter-turn ball valves on each side let you isolate the assembly for testing or winterization without draining the whole line. At 12.5 inches long, it fits neatly into tight valve boxes or mechanical rooms. The silicone and stainless steel exterior finish holds up against UV exposure and ground contact.

One thing to note: this is a double check valve, not a reduced pressure assembly. It handles back-siphonage and backpressure well, but it’s not rated for high-hazard applications like boiler feed or chemical lines. If you need maximum protection for potable water in a commercial setting, step up to a reduced pressure model. For residential irrigation or fire protection, this Febco delivers exactly what you need without overcomplicating the install.