Leyon FM UL Air Release Vacuum Breaker Valve Threaded Flanged with Throttling Air Control Device Sizes 1″ 2″ 3″ 4″ 6″

Threaded and flanged Air Release & Vacuum Breaker Valves with Throttling Air Control Device (sizes 1″-6″) automatically release pipeline air and prevent vacuum, protecting systems from pressure damage. Features include dual-function integration, compatibility with multiple connections, and controllable flow. Used in water supply, drainage, HVAC systems, especially effective in high-rise buildings and pump pipelines.

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Application Areas

From soaring commercial towers and industrial plants to vital municipal projects and residential complexes, our firefighting valves provide unmatched reliability where safety matters most. Designed to perform under pressure, they safeguard lives and assets across diverse environments—ensuring your fire protection system is always ready when it counts.

Why Choose Our Leyon

Engineered for Critical Environments

We deliver reliable firefighting valves with advanced manufacturing, strict testing, and global standards—backed by fast delivery and expert support.

Why Choose Our firdip

A1: Our products meet ISO, UL, FM, CE and other international certifications to satisfy different market and project requirements.

A2: Yes, we offer customization in size, pressure rating, connection type, and surface treatment to meet specific application needs.

A3: Standard models can usually be shipped within 7–15 days. Bulk or customized orders will require confirmation of the exact lead time.

A4: We implement strict raw material inspection, process control, and final product testing, backed by warranty and after-sales support.