Pneumatically Actuated Diaphragm Valve, Coefficient of Volume (Cv) 2.5, Nominal Valve Size 1/2 in, Actuator Air Port Connection 1/8 in FNPT, Connection Type - Side 1 NPTF, Connection Type - Side 2 NPTF, For Media Air, Oil, Water, Diaphragm Material Buna-N, Operating Temperature - Maximum 180 Degrees F, Maximum Pressure - Operating 250 psi, Valve Deactivated State Normally Open (NO), Body Material Bronze, Diaphragm Valve Type 2-Way, Seal Material Buna-N, Overall Length 1.94 in