Description

VRF vacuum relief valve
Septic tank drain valves on boats are often too small for suction drainage. In the worst case, a suction drain can break the septic tank. The VRF valve opens automatically if the vacuum becomes too high. When open, the free flow is more than 1100 m2. The valve meets ISO8099 requirements. The tank must have a Ø 56 mm hole for installation. The VRF low-pressure valve is strongly recommended if the diameter of the existing drain valve is less than 19 mm and less than 38 mm for tanks over 400 litres.