Erie By Schneider Electric VM3222P33A000 PopTop 3-Way Proportional Zone Valve 1/2" NPT 24V

The Erie by Schneider Electric VM3222P33A000 is a 3-way modulating zone valve assembly designed for precision control in closed hydronic heating and cooling systems. This PopTop series valve features a proportional control actuator that responds to 0-10 VDC or 4-20 mA control signals for accurate flow modulation in fan coil units, VAV reheat, unit ventilators, air handlers, and radiant applications.

Key Specifications:

• Connection: 1/2" NPT threaded
• Configuration: 3-way mixing valve
• Flow Coefficient (Cv): 2.0
• Close-Off Pressure: 50 PSI
• Power Supply: 24 VAC
• Control Type: Proportional (0-10 VDC or 4-20 mA)
• Return Type: Non-Spring Return (fail-in-place)
• Protection Rating: NEMA Type 1

Construction and Features:

• Forged brass valve body with nickel-plated/chrome-plated brass stem
• High-temperature thermoplastic/rubber plug for reliable sealing
• Equal percentage flow characteristic for consistent temperature control
• Tool-less actuator connection allows easy removal without disturbing piping
• Manual override capability for manual positioning during service
• Rotary mechanical movement with jumper-selectable operating range
• Operating pressure limit: 400 PSI static
• Suitable for water and glycol solutions (25-60%)

Operating Conditions:

• Ambient Temperature Range: 35°F to 125°F (2°C to 52°C)
• Fluid Temperature Range: 32°F to 200°F (0°C to 93°C)
• Not rated for steam applications
• Humidity: 5% to 95% RH, non-condensing

The VM3222P33A000 assembly includes the VM3222 valve body with tool-less connection linkage and the AP33A000 proportional actuator. The valve must be piped in a mixing configuration (not diverting) with Port B as the service port and Port A as the bypass port. When mounted in horizontal piping, the actuator must be positioned above the valve body to ensure proper operation and prevent moisture damage.

This maintenance-free valve assembly is UL Listed and CUL Listed for use in the United States and Canada, making it ideal for professional HVAC installations requiring precise modulating control of water flow.