Erie By Schneider Electric VM3322P33A000 3/4" NPT 3-Way Proportional Zone Valve 50 PSI 24V Non-Spring Return

The Erie by Schneider Electric VM3322P33A000 is a 3-way proportional zone valve assembly from the PopTop Series, designed for precise control in closed-loop hydronic heating and cooling systems. This complete assembly combines a forged brass valve body with an integrated electric actuator, providing reliable and accurate flow control for HVAC applications.

Key Features:

• 3/4-inch NPT threaded connections for easy installation
• Proportional control with 0-10 VDC or 4-20 mA input signals
• 50 PSI close-off pressure rating with 400 PSI static pressure capability
• 24 VAC power supply (50/60 Hz)
• Non-spring return operation with fail-in-place functionality
• Tool-less PopTop actuator connection for quick installation and servicing
• Forged brass body construction with nickel-plated stem
• High-temperature thermoplastic plug and rubber paddle for durability
• NEMA Type 1 enclosure rating
• Suitable for water and glycol solutions (25-60%)

Operating Specifications:

• Fluid temperature range: 32°F to 200°F (not rated for steam)
• Ambient temperature range: 35°F to 125°F
• Direct acting proportional control (valve opens port B with increased signal)
• Equal percentage flow characteristic
• Manual override capability for system flushing
• Requires closed-loop system operation

This 3-way mixing valve must be piped with the plug closing against flow direction, with port B as the service port and port A as the bypass port in normally closed configuration. The actuator can be mounted in horizontal or vertical piping with the actuator positioned above the valve body when installed horizontally. The VM3322P33A000 is ideal for zone control in fan coils, baseboards, air handlers, and other hydronic applications requiring precise proportional control.