Siemens Building Technology 277-06051 3" Flowrite Valve Assembly 2-Way Normally Closed 100 Cv Linear

The Siemens Building Technology 277-06051 is a complete Flowrite 599 Series valve assembly designed for commercial HVAC applications requiring precise flow control of hot or chilled water systems. This assembly combines a high-quality 3-inch globe valve with an 8-inch pneumatic actuator for reliable, fail-safe operation.

Valve Specifications:

• Valve Size: 3-inch (DN 80)
• Flow Coefficient (Cv): 100 GPM
• Valve Type: 2-way globe valve with linear flow characteristic
• Body Rating: ANSI Class 125 flanged end connections
• Trim Material: Stainless steel (SS) for corrosion resistance
• Packing: High temperature packing rated to 250°F (121°C)
• Action: Normally Closed (NC) - fails closed on loss of air pressure
• Stroke: 3/4-inch (20 mm)
• Rated Close-off Pressure: 23 PSI

Actuator Specifications:

• Actuator Type: 8-inch pneumatic spring return actuator
• Control Signal: 10-15 PSI (5 PSI span)
• Spring Start Point: 10-15 PSI for normally closed operation
• Fail-Safe: Spring return to closed position
• NEMA Rating: NEMA 1 enclosure

Applications:

Ideal for controlling hot or chilled water flow in commercial HVAC systems including fan coil units, air handling units, heat exchangers, cooling towers, and hydronic heating systems. The normally closed configuration provides fail-safe protection by shutting off flow when air pressure is lost or power fails.

Features:

• Complete factory-assembled and tested valve/actuator assembly
• Linear flow characteristic for precise proportional control
• Stainless steel trim resists corrosion in water applications
• High temperature packing suitable for steam and hot water service
• Spring return actuator provides fail-safe closed position
• Pneumatic control eliminates need for electrical wiring at valve
• ANSI Class 125 flanged connections for easy installation