Johnson vacuum valve 22mm

Johnson Vacuum valve 22 mm The Vacuum valve is an inexpensive insurance against the ingress of water into the engine and the associated expensive repairs. The maximum ambient temperature should not exceed 60°C. The valve opens at a pressure corresponding to a water column of 3-5 cm. The materials used are seawater resistant and suitable for use with Fresh water and glycol in typical concentrations. The valve should not be exposed to oils and greases and should be cleaned or replaced immediately if dirty. - Non-corrosive - Simple to install - Does not leak - High quality plastics - 5 valve sizes