Erie Controls VS3343 Zone Valve Body Assembly

The Zone Valve Body Assembly from Erie Controls VS3343 delivers precise control for HVAC systems. This 3-way valve offers a 3/4 inch nominal size with inverted flare x inverted flare end connections for reliable, easy installation in heating and cooling loops.

Featuring spring-return actuation and a normally closed valve position, it provides fail-safe operation in demanding environments. It handles media including water, glycol mixtures, and low-pressure steam, with a fluid temperature rating of 32 to 250°F, close-off pressure up to 60 psi, static 300 psi, and steam 15 psi. The assembly uses a nickel-plated stem, brass seat, and Buna N paddle for durability, while tolerating ambient temperatures up to 169°F and 5–95% non-condensing humidity.

Designed for heating and cooling applications, the VS3343 provides reliable flow control with a 4 Cv capacity, making it suitable for a variety of loop designs and system pressures.

• Hysteresis synchronous motor for long life
• Spring return operation provides a fail-safe
• Manual override lever for easy on-site adjustment
• 3-way valve configuration with inverted flare connections
• Flow capacity: 4 Cv
• Materials: nickel-plated stem, brass seat, Buna N paddle
• Ambient temperature rating up to 169°F; humidity 5–95% non-condensing
• Applications: heating and cooling systems using water, glycol, or low-pressure steam