Schneider Electric VK-7211-201-4-9 2-Way Pneumatic Globe Valve Assembly 1-1/4" 20 Cv Normally Open

The Schneider Electric (Barber Colman) VK-7211-201-4-9 is a complete pneumatic valve assembly designed for precise control of hot water, chilled water, and low-pressure steam in HVAC/R systems. This assembly combines a VB-7211 series 2-way globe valve with an integrated MK-2690 spring return pneumatic actuator for reliable, energy-efficient flow control.

Valve Specifications:

• 1-1/4 inch union NPT connection for easy installation and maintenance
• Straight body configuration (stem up open design)
• 20 Cv flow coefficient for efficient heat transfer
• Bronze valve body with brass trim and soft seat for tight shutoff
• Close-off pressure rating of 15 PSI
• Temperature range: 20°F to 281°F (-7°C to 138°C)

Actuator Features:

• MK-2690 pneumatic actuator with 6 square inch effective diaphragm area
• Spring return design with 3-7 PSI spring range (normally open configuration)
• Supports two-position (on/off) or proportional control applications
• Die-cast aluminum housing with replaceable neoprene diaphragm
• 1/2 inch stroke with linear motion for precise modulation
• 1/8 inch FNPT air connections
• NEMA 1 enclosure rating

Application:

This valve assembly is ideal for controlling water and steam flow in commercial and industrial HVAC systems. The normally open fail-safe position ensures system protection during power loss, while the proportional control capability allows for precise temperature regulation. The union connection simplifies installation and servicing without disturbing piping. Linkage kit AV-7400 is included for mounting the actuator to the valve body.

Meets ANSI, PED, ASTM, and CRN standards for quality and environmental compliance.