Erie By Schneider Electric VM3221T13A00T 1/2" NPT 3-Way Modulating Valve with Floating Spring Return Actuator

The Erie by Schneider Electric VM3221T13A00T is a complete valve assembly designed for precise HVAC zone control in hot and chilled water systems. This integrated unit combines a 1/2" NPT three-way modulating valve with a 24VAC floating spring return actuator, providing reliable temperature control in commercial and residential building automation applications.

Valve Body Features:

• 1/2" NPT threaded connections for easy installation
• Three-way mixing configuration with 1.0 Cv flow coefficient
• Forged brass body construction for durability and corrosion resistance
• 50 PSI maximum working pressure rating
• Normally closed spring return action for fail-safe operation
• Equal percentage flow characteristic for precise modulation
• ANSI Class IV seat leakage rating (0.01%)

Actuator Specifications:

• 24VAC floating control with three-wire configuration
• Spring return normally closed design returns valve to safe position on power loss
• Manual override lever for testing and emergency operation
• High-temperature plastic housing rated for HVAC environments
• Operating temperature range: 35°F to 125°F ambient
• NEMA Type 1 enclosure rating
• UL and CUL listed for safety compliance

PopTop Design Benefits:

• Modular construction allows actuator replacement without removing valve from piping
• Quick-connect PopTop mounting system for fast installation
• Suitable for horizontal or vertical pipe mounting (actuator must be above valve in horizontal runs)
• Compatible with standard building automation controllers requiring floating point control

This valve assembly is ideal for hydronic heating and cooling systems, fan coil units, unit heaters, and zone control applications. The three-way configuration enables mixing or diverting service, making it versatile for various temperature control strategies. Suitable for use with water or glycol solutions up to 50% concentration.