Busch jost 82540 series 22 way solenoid diaphragm valves busch jost 8254400915423049 a normally closed solenoid operated diaphragm valve from the busch jost 82540 series the valve is suitable for use with neutral gases and liquids including vacuum busch jost 8254400915423049 22 way solenoid diaphragm valve g1 230v ac