VG7241CS+8122G Johnson Controls Valve / Actuator

Overview

The Johnson Controls VG7241CS+8122G is a high-performance valve and actuator assembly that combines a 1/2-inch 2-way normally open globe valve with a VA-8122 series proportional electric actuator. Designed for precise flow control in commercial HVAC and building automation systems, this assembly provides modulating control of hot or chilled water, or glycol solutions. The non-spring-return actuator ensures reliable positioning and retains its last position upon power loss.

Features

• Proportional control allows for precise and accurate modulating valve positioning
• AUTOCAL pushbutton simplifies setup by automatically defining the control input range over the stroke
• Selectable direction of action provides increased application flexibility
• Status LED reduces commissioning time by displaying the operating status at a glance
• Non-spring-return design maintains the valve position during a power failure

Specifications

• Valve Size: 1/2 inch
• Connection Type: NPT (National Pipe Thread)
• Body Pattern: 2-Way Normally Open
• Flow Capacity: 0.73 Cv
• Flow Characteristic: Equal Percentage
• Actuator Type: Proportional Electric (Non-Spring Return)
• Supply Voltage: 24 VAC
• Control Input Signal: Jumper selectable 0(2) to 10 VDC or 0(4) to 20 mA
• Maximum Static Pressure: 400 psi
• Seating Force: 22 lb minimum

Applications

• Modulating control of hot or chilled water loops in commercial HVAC systems
• Proportional flow regulation in building automation hydronic applications
• Variable flow control for glycol solutions up to 50% concentration
• Retrofit installations for compatible terminal unit valves and flare valves