Pneumatic Valve Actuator, Air Connection Gender Female, Air Connection Size 1/8 in, Air Connection Type NPT, Compatible Valve Size 1/2 in, 1 1/4 in, Diaphragm Material Neoprene, Effective Diaphragm Area 6 sq in, Housing Material Die Cast Aluminum, Installation Orientation Vertical, Operating Temperature - Maximum 220 Degrees F, Operating Temperature - Minimum -20 Degrees F, Overall Depth 2 1/4 in, Overall Length 5 in