Siemens Building Technology Normally Closed Control Valve Assembly Cv Stainless Steel

The Siemens Building Technology normally closed control valve assembly with stainless steel trim is a 2-way globe-style valve and actuator assembly for HVAC systems. It belongs to the Flowrite 599 Series. Building automation systems use it to regulate hot or chilled water flow in heating and cooling applications. Each assembly is rated by its flow coefficient (Cv), so you can match it to the flow your system needs.

Key Features:

• Normally closed action: the valve stays closed when the actuator is not driving it open.
• Stainless steel trim: built for durability, with metal-to-metal seating.
• Stainless steel stem: resists wear and corrosion over many cycles.
• Equal percentage flow characteristic: gives stable, precise modulating control.
• ANSI Class 250 valve body: suited to typical commercial HVAC pressures and temperatures.
• Low leakage: ANSI Leakage Class IV (0.01% of Cv) shutoff.
• Cartridge-type packing with EPDM O-rings: helps keep the stem sealed.
• Threaded NPT end connections: make piping installation straightforward.
• Factory-assembled valve and actuator: reduces field setup.

The assembly suits commercial building HVAC applications such as air handling units, fan coil units, and zone heating and cooling loops. Siemens Building Technology designs these valves for reliable, repeatable control in building automation systems.