Siemens Building Technology 599-05972 4" Normally Closed 2-Way Stainless Steel Valve 125# Flange

The Siemens Building Technology 599-05972 is a 4-inch normally closed (NC) 2-way stainless steel control valve designed for HVAC and building automation applications. This industrial-grade valve features a Class 125# flanged connection and O-ring sealing for reliable performance in heating, cooling, and process control systems.

Key Features:

• 4-inch pipe size with Class 125# flanged connections
• Normally closed (NC) configuration - valve closes when power is removed for fail-safe operation
• 2-way design for on/off or modulating control of fluid flow
• Stainless steel construction for corrosion resistance and durability
• O-ring seal design provides tight shutoff and long service life
• Compatible with Siemens building automation actuators and controllers

This valve is commonly used in commercial HVAC systems, chilled water applications, and industrial process control where reliable flow control and corrosion resistance are essential. The normally closed design provides safety by stopping flow in the event of power or control signal loss.