Siemens Building Technology 283-05991 Normally Closed Globe Valve Assembly Cv - 2-Way 3 Inch 100

The Siemens Building Technology 283-05991 is a professional-grade 2-way globe valve assembly designed for precise flow control in commercial HVAC systems. This normally closed valve assembly combines a 3-inch flanged bronze valve body with an 8-inch pneumatic spring-return actuator and factory-mounted positioner for accurate proportional control.

Key Features:

• 3-inch flanged connection for ANSI Class 125 applications
• 100 Cv flow coefficient rating for high-capacity water systems
• Equal percentage flow characteristic for precise modulating control
• Bronze trim construction for durability and corrosion resistance
• 8-inch pneumatic actuator (599-01050) with 3/4-inch stroke
• Factory-mounted positioner for proportional control and accurate valve positioning
• Normally closed fail-safe operation (closes on air pressure loss)
• 125 PSI maximum working pressure rating

This valve assembly is ideal for hot water and chilled water applications in commercial buildings, including fan coil units, air handling units, and hydronic heating and cooling systems. The factory-mounted positioner eliminates field installation and ensures proper calibration for responsive, accurate control. Part number 283-05991 uses valve body 599-05991 combined with positioner-equipped actuator assembly.