1/2" Expansion Tank Ball Valve with Drain

Professional-Grade Isolation and Drainage – Webstone Expansion Tank Valve

Designed specifically for closed-loop hydronic heating systems, the Webstone Expansion Tank Valve provides a compact, efficient solution for isolating and servicing expansion tanks. Its dual-purpose design enables quick shut-off and drainage without requiring system shutdown, simplifying tank maintenance and replacement tasks for professional contractors.

Engineered for Efficiency and Durability

This all-in-one valve streamlines installation and servicing, reducing the number of fittings and minimizing potential leak points. Built from lead-free brass and rated for high-temperature applications, it delivers lasting reliability in demanding environments.

• Isolates Expansion Tanks – Facilitates tank removal or replacement without draining the entire system.
• Integrated Drain Port – Allows fast, controlled drainage of the tank when needed.
• Blow-Out Proof Stem – Enhances safety by preventing stem ejection under pressure.
• Adjustable Packing Gland – Maintains a secure seal and supports long-term maintenance.
• Heavy-Duty Construction – Made from corrosion-resistant, lead-free brass for dependable operation.

Specifications

• Size: 1/2" NPT
• Connections: Threaded ends, ANSI B1.20.1 compliant
• Operating Pressure: Up to 600 PSI (non-shock), 250°F maximum
• Application: Designed for use with expansion tanks in hydronic heating systems

Installation Notes

While straightforward to install, this valve should be installed by licensed professionals to ensure compliance with local plumbing codes and to maintain system integrity. A proper sealant and correct torque are essential when working with threaded connections.

Benefits for the Trade

• Time-Saving Maintenance – Speeds up tank servicing with built-in isolation and drainage functions.
• Reduced Component Count – Combines multiple functions into a single fitting, decreasing labor and material costs.
• Space-Efficient Design – Ideal for tight mechanical rooms and retrofit installations.

Built for System Integrity

The Webstone Expansion Tank Valve is a proven component in modern hydronic systems, delivering professional-level performance and simplified service access. Its design meets the needs of contractors focused on efficiency, safety, and long-term durability.