Pneumatic Control Valve, Unitary, Pipe (In.) 1/2 OD, Width (In.) 3 1/8 in, Height (In.) 4 1/8 in, Valve Type 2 Way NO, Cv 1.6, Spring Range (PSI) 3-10, Body Pressure Rating (PSI) 250 psi, Close Off Rating @ Main PSI 45 @ 13, Max. Controlled Medium Temp. (F) 250 Degrees F, Max. Safe Air PSI 30 psi, Features Direct Acting Rolling Diaphragm Actuator with Integral High Temperature Plastic Air Connector, Rotating Actuator, Aligns Air Connection with Control Air Piping