PNEUMATIC ACTUATOR, – SPRING LOAD – DIAPHRAGM – OPENING ACTION (FAULT CLOSES) – FORCE TO MOVE 1300 LBF – SUPPLIED WITH PNEUMATIC POSITIONER WITH MOUNTING KIT – 0.75 ” REQUIRED STROKE – MATERIAL (UPPER AND LOWER DIAPHRAGM COVER, YOKE ) CARBON STEEL, STAINLESS STEEL ACTUATOR STEM – SPRING TYPE 6 – 30 OR SUFFICIENT TO MEET THE REQUIRED FORCE ALSO FOR CLOSING. L1374MANUFACTURERS: HITER, MASONEILAN, SAMSON.