Siemens 257-02008B 2-Way Terminal Unit Valve 2.5 Cv

Product Description

The Siemens 257-02008B is a reliable two-way terminal unit valve designed for efficient fluid control. This valve operates with a Cv of 2.5 and features a normally closed configuration. Constructed with brass trim and providing a female threaded connection, this valve is equipped with a spring return pneumatic actuator for straightforward operation within a pressure range of three to eight psi.

• Operates with a Cv of 2.5
• Suitable for hot or chilled water and low pressure steam
• Features low leakage rate, meeting ANSI Class IV standards

Product Highlights

This valve is a perfect choice for use in fan coil units and convectors, ensuring efficient and reliable performance in HVAC applications.

Product Information

Standard Information

• Brand: Siemens Building Technologies
• Manufacturer Part Number: 257-02008B

Technical Specifications

• Capacity: 2.5 Cv
• Pipe Size: 0.5 inches
• Connection Type: Threaded NPT
• Max Close-Off Pressure: 28 psi
• Body Pattern: Two-Way
• Valve Style: Globe
• Medium Temperature Range: 35-250 °F
• Flow Characteristic: Modified Equal Percentage
• Fail-Safe Mode: Spring Normally Closed
• Body Rating: 250
• Rated Close-off: 28
• Max Temp: 230 °F
• Trim: Brass
• Actuator Type: Spring Return
• Control Signal Type: 3-8 psi
• Pneumatic Connection: COO
• Fail Position: Normally Closed
• Spring Range: 3-8