Erie By Schneider Electric VM3221T33A000 1/2" NPT 3-Way Modulating Zone Valve Assembly with Floating Actuator

The Erie By Schneider Electric VM3221T33A000 is a complete PopTop Series zone valve assembly designed for precise flow control in closed hydronic heating and cooling systems. This valve combines a brass 3-way mixing valve body with a floating non-spring return actuator, providing reliable modulating control for fan coil units, VAV reheat, unit ventilators, air handlers, and radiant heating applications.

Key Features:

• 1/2" NPT threaded connections for versatile installation
• 3-way mixing configuration with 1.0 Cv flow coefficient
• 50 PSI maximum close-off differential pressure rating
• 24 VAC floating control actuator with non-spring return action
• Forged brass valve body with nickel-plated chrome-plated brass stem
• Removable PopTop actuator allows field replacement without removing valve from system
• Equal percentage flow characteristic for precise modulation
• NEMA 1 enclosure rating for indoor applications
• Operating temperature range: 35°F to 125°F ambient, 32°F to 200°F fluid
• No leads configuration requires field wiring

The innovative PopTop design enables the actuator to be installed after the valve body has been mounted, simplifying installation and maintenance. The floating control signal provides three-wire modulating control without spring return, maintaining the last commanded position when power is lost. With a shipping weight of approximately 1.9 lbs and rugged forged brass construction rated for 400 PSI static pressure, this valve assembly delivers long-lasting performance in demanding HVAC applications.