Watts 1/2 LF9D - Part of the LF9D Series silt-fence-selector ZB150F-3NL-C

ZB150F-3NL-C

UPC - 098268279030

It is designed for use in the boiler feed lines of hydronic heating systems and has 1/2 inch union NPT inlet x NPT threaded outlet connections with Viega ProPress® connection adapters

Bottom outlet

ZN199-DC-2NH

Watts 1/2 LF9D - Part of the LF9D Series silt-fence-selector ZB150F-3NL-CThis 1 2 inch lead free dual check valve backflow preventer with atmospheric vent prevents the reverse flow of hot or cold polluted water from entering into the potable water supply. This valve is designed for continuous pressure non health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. It consists of a lead free forged brass body with