ASCO VALVE PROPORTIONAL S290A688PD 2.2 NF STEEL BODY PN16 DN50 CLAMP G1 / 4 ARRIVAL FLUID VALVE GLAND PTFE CHEVRON HEAD CONTROL = 90 PRESSURE CONTROL 4-10b + Option 666311 ( POSITIONER D M12 CONNECTION FAIL-CLOSED POSITION OPERATOR D=63-90 ET 125 SET-POINT 4-20 MA (B71) )