GF 561 and 562 valves feature a unique check cone element design that optimizes flow geometry and minimizes flow resistance and pressure loss. The check valve Type 562 (horizontal) closes leak-tight with the built-in spring, even in the de-energized state without water column, as well as in a horizontal position. The self-closing mechanism operates autonomously, without any other energy source, i.e., water column or flow (type 562) or with a minimal line pressure (type 561). The streamlined check cone and the refined geometry in every detail provide for a significantly improved flow compared to valves with a check ball, without compromising functionality or leak-tightness. The effort involved in cleaning and servicing the valve has been reduced to a minimum due to the cone design, which offers the least possible contamination surface. With its sealing zone and the specially developed profile seal, the valve is leak-proof, even when closing very quickly.
- FPM or EPDM seals
- 562 valves come standard with SS spring
- All come with both socket & threaded end connectors
- Sealing pressure: 2.9 psi (561) or 1.45 psi (562)
- Maximum temperature: 140°F