Siemens 257-02004B 2-Way 1/2" Terminal Unit Valve, Cv 1.0, NC, Brass Trim, F x F [New]

Siemens 257-02004B 2-Way 1/2" Terminal Unit Valve, Cv 1.0, Normally Closed, Brass Trim, F x F Connection, Spring Return Pneumatic Valve Actuator, 3-8 psi (21-55 kPa). Siemens. Siemens. 257-02004B.