Diaphragm valve 669 series

shut-offfor hot waterthreaded

The combination of a shut-off valve, strainer, back flow preventer and safety valve with diaphragm in a space-saving body guarantees the adherence to the mandatory order for all fittings required for a potable water heating system. This eliminates the necessity for time-consuming individual installation. The body made of gunmetal guarantees an excellent resistance to the most varying qualities of potable water. For the protection of: - closed circuit water heaters for drinking water and process water. The safety valve assembly is installed in the cold water inlet of the hot water heater. The use of this compact valve assembly ensures that the correct order of the valves according to DIN 1988 is adhered to. - water heaters for potable and process water and -storage tanks The safety valve of the valve assemby is set and sealed at the factory.