Siemens 257-02045 3/4" Valve Assembly Normally Open 3-8 PSI 6.3Cv, FxUM

Siemens 257-02045 is a high performance 2" pneumatic actuator for efficient and reliable valve control in HVAC systems. Because this is specifically engineered as a 2 way valve, it can be used in a temperature range of 35°F to 250°F. With a 3/4" FxUM connection, it is ready to connect securely and stably to your existing system. The actuator operates in a spring range of 3–8 PSI to provide precise control and reliable actuation for HVAC systems. It has a flow coefficient (Cv) of 6.3 and provides optimal performance delivering a high flow rate with high efficiency. This facilitates easy and accurate modulation of air or fluid flow for improved system performance.