Watts LF7RU2-2 Lead Free Dual Check Valve 1 Union FNPT x 1 FNPT DCV-0072205. Watts LF7RU2-2 Lead Free Dual Check Valve 1 Union FNPT x 1 FNPT Watts LF7RU2-2 Lead Free Dual Check Valve 1 Union FNPT x 1 FNPT Watts LF7R Series 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. They are designed for non-health hazard residential water system containment and continuous pressure applications. The valves consist of a Lead Free cast copper silicon alloy body construction with two compact replaceable plastic check modules and stainless steel springs. They are installed immediately downstream of the residential water meter in a vertical or horizontal position. Check with local inspection authorities for installation requirements. Prevents backflow Tested and certified by NSF to NSF/ANSI Standard 61 Annex G Can be installed vertically or horizontally Temperature Range: 33°F – 180°F (0.5°C-82°C) continuous Minimum Working Pressure: 10psi (69 kPa) Maximum Working Pressure: 175psi (12.07 bar) Connection Type: union 1 FNPT x 1 FNPT Materials: Body: Lead Free copper silicon alloy Check Modules: engineered composite Discs: santoprene Seals: EPDM Springs: stainless steel Also Compatible With: Zurn-Wilkins Dual Check Valve 1UFX1F-700XL Cash Acme BF1 Dual Check Valve #17218 Watts Dual Check Valve LF7R Series Specifications Watts Dual Check Valve LF7R Series Installation Instructions LF7RU2-2 0072205 LF7RU2-2 Check Valves Backflow Prevention Check Valves