Amiad Filtration Systems' Raph-ael control valves do not have springs to slip or wear out. Avail-able in 2 to 12', they can be used as basic on/off or pressure-regulating valves. Simple to install, operate and service, they have only three major components: body, dia-phragm and cover. The diaphragm design prevents the formation of trapped air.

Circle 202