Siemens Building Technology 259-02051 Valve Assembly NO 1/2-Inch 1.0 Cv Stainless Steel

The Siemens Building Technology 259-02051 is a precision-engineered two-way control valve assembly designed for HVAC and building automation applications. This normally open (NO) valve features a modified equal percentage flow characteristic that provides precise control over fluid flow in heating, cooling, and process control systems.

Key Specifications:

• Valve Size: 1/2-inch with female NPT x female NPT threaded connections
• Flow Coefficient (Cv): 1.0 for accurate flow control in smaller systems
• Valve Configuration: Two-way, normally open design
• Trim Material: Stainless steel for durability and corrosion resistance
• Flow Characteristic: Modified equal percentage for stable control response
• Actuator: SSC81U electronic floating actuator with fail-in-place safety feature
• Control Type: Floating control for precise positioning without spring return

The integrated SSC81U electronic actuator provides reliable modulating control with fail-in-place functionality, maintaining the valve position during power loss. The stainless steel trim ensures long-term reliability in demanding commercial and industrial building automation systems. This valve assembly is ideal for zone control, mixing applications, and flow regulation in chilled water, hot water, and glycol systems.