Siemens 257-02002B Globe Valve Assembly 2-Way 1/2 in Normally Closed

Product Description

The Siemens 257-02002B is a globe valve assembly with a pneumatic actuator configured as a 2-way, normally closed control valve. It has a 1/2 in female NPT connection, brass trim, and a flow coefficient (Cv) of 0.63. The actuator accepts a 3 to 8 psi control signal with a 7/32 in stroke and 1/8 in NPT barbed air connection. Suitable for potable water and water-glycol solutions to 50%, operating 35 F to 250 F (2 C to 120 C).

• 1/2 in female x female NPT globe valve, brass trim, Cv 0.63, modified equal percentage flow
• Pneumatic spring-return actuator, control pressure 3 to 8 psi, 7/32 in stroke, 1/8 in NPT barbed air connection; normally closed
• Close-off pressure 40 psi; serviceable for potable water and water-glycol solutions to 50%; operating temperature 35 F to 250 F (2 C to 120 C)

Product Highlights

2-way globe valve assembly, 0.63 Cv, 1/2 in NPT, brass trim, pneumatic spring-return actuator, normally closed

Product Information

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 257-02002B
• Country of Origin: US

Technical Specifications

• Brand: Siemens
• Manufacturer Part Number: 257-02002B
• Valve Type: Globe valve
• Valve Pattern: 2-way
• Size: 1/2 in
• Connection: Female x Female NPT
• Flow Coefficient (Cv): 0.63
• Trim Material: Brass
• Actuator Type: Pneumatic spring-return
• Actuator Model: 599-01088
• Assembly Valve: 599-02002B
• Control Pressure Range: 3 to 8 psi
• Stroke: 7/32 in
• Air Connection: 1/8 in NPT barbed fitting
• Normal Position: Normally closed
• Service Media: Water, water-glycol solutions to 50%
• Close-off Pressure: 40 psi
• Flow Characteristic: Modified equal percentage
• Body Rating: ANSI 250
• Operating Temperature: 35 F to 250 F (2 C to 120 C)
• Approvals: UL File E220114, CE (per manufacturer listings)