Siemens Building Technology 285-05930 Normally Closed Valve Assembly with Actuator HVAC Control Valves & Actuators - 2-1/2 12

The Siemens 285-05930 is a Flowrite 599 Series valve and pneumatic actuator assembly designed for precise regulation and control of water, steam, and other media in commercial HVAC applications. This factory-assembled unit combines a high-quality globe valve with a reliable spring-return pneumatic actuator for immediate installation.

Key Features:

• 2-1/2 inch flanged connection, ANSI Class 250 rating
• 2-way normally closed (NC) configuration
• Stainless steel trim for enhanced durability and corrosion resistance
• 12-inch stroke spring-return pneumatic actuator
• Factory-mounted and tested for reliable operation
• Equal percentage flow characteristic for optimal control
• Designed for use in chiller systems, boiler applications, and hydronic distribution

This valve assembly is ideal for commercial building automation systems where precise flow control is essential for energy efficiency and comfort. The normally closed design ensures fail-safe operation, with the valve returning to the closed position upon loss of air pressure.