Siemens 256-02017 2-Way Normally Closed Globe Valve Assembly 1/2 Inch 0.63 Cv Stainless Steel

The Siemens 256-02017 is a complete 2-way normally closed globe valve assembly featuring stainless steel trim, designed for HVAC terminal unit control applications. This assembly combines a Powermite 599 series MT valve body (599-02017) with a 2-inch pneumatic spring return actuator operating at 10-15 psi (69-103 kPa).

Key Specifications:

• Valve size: 1/2 inch NPT female x female connections
• Flow coefficient (Cv): 0.63 (Kvs: 0.54)
• Configuration: 2-way, normally closed (NC)
• Trim material: Stainless steel for enhanced durability
• Actuator: 2-inch pneumatic spring return, 10-15 psi operating range
• Actuator stroke: 7/32 inch (5.5 mm)
• ANSI Class 250 construction
• Leakage rating: ANSI Class IV

Applications and Features:

• Suitable for hot water, chilled water, and water-glycol solutions up to 50%
• Compatible with steam applications up to 15 psi when using stainless steel trim
• Direct-coupled universal bonnet design
• Requires minimum 67 lbs (300 N) actuator force
• Fail-safe spring return operation
• Air connection: 1/8 inch NPT barbed fitting

This valve assembly is part of the Siemens MT Series terminal unit control system and is compatible with pneumatic and electronic actuators featuring a 7/32 inch stroke. The stainless steel trim provides superior corrosion resistance for demanding HVAC applications.