Schneider Electric VK4-7313-202-4-8 1" Three-Way Mixing Globe Valve Assembly with Pneumatic Actuator and Positioner

The Schneider Electric VK4-7313-202-4-8 is a pre-assembled three-way mixing globe valve designed for control of chilled water, hot water, or steam in HVAC applications. This professional-grade valve assembly combines a 1-inch NPT threaded bronze body globe valve with a spring return pneumatic actuator and positive positioner for precise proportional control.

Key Specifications:

• Valve Size: 1 inch NPT threaded connection
• Configuration: Three-way mixing valve
• Flow Coefficient (Cv): 14
• Control Spring Range: 5-10 PSI
• Actuator Type: Pneumatic with spring return
• Includes: Positive positioner for accurate modulating control
• Flow Action: Stem down, flow "B" to "AB" port
• Bronze body construction with brass trim (1/2" to 2" sizes)

Performance Features:

• Linear flow characteristic optimized for three-way mixing applications
• Spring return operation provides fail-safe positioning on loss of air pressure
• Integrated positive positioner ensures accurate valve positioning throughout the control range
• Compatible with hot or chilled water, steam (up to 35 psig), and glycol solutions (up to 50%)
• Operating temperature range: 20°F to 281°F (-7°C to 138°C)
• Pressure rating: ANSI B16.15-1985, Class 250 (400 psi at 20° to 150°F)

The VB Series valves have a long history of high quality and reliability in commercial HVAC systems. The pre-assembled design simplifies installation and reduces field labor time, while the positive positioner provides superior control accuracy for demanding temperature control applications.