Watts 800M4FR-FZ 1 - Part of the 800M4FR Series Geotextile an integral 2-inch external water

an integral 2-inch external water dam

and a heavy duty slotted and knurled adjusting screw

Heavy-Duty Grate Design: Heel-proof and traffic-rated grates resist damage under load while allowing easy removal for inspection and cleaning

one sensing passage o-ring

creating a durable and flexible joint filler with a 100-year life cycle

Watts 800M4FR-FZ 1 - Part of the 800M4FR Series Geotextile an integral 2-inch external waterThis 1 inch freeze resistant pressure vacuum breaker backflow preventer helps prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of bronze body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet with silicone rubber O ring seal, a lightweight plastic disc float, a built in relief valve to protect the internal components and