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As a leading manufacturer based in Tianjin, China, FYL (Tianjin Fuyaolai Technology Co., Ltd.) specializes in the engineering and production of the high-performance Compound Air Release Valve. Designed for modern fluid systems, our valves ensure optimal pipeline safety by providing rapid air exhaust and vacuum protection. With a focus on durability and efficiency, FYL delivers world-class water conservancy solutions to global markets, ensuring your infrastructure remains resilient and energy-efficient.

The Compound Air Release Valve is an essential component in any pressurized piping system. Unlike standard valves, the Compound Air Release Valve by FYL utilizes a sophisticated dual-orifice mechanism to handle both high-volume air movement and small-volume air release.

• Initial Filling: When the pipeline is first filled, the large orifice allows massive volumes of air to escape.
• Operational Exhaust: During normal operation, if air pockets accumulate, the float drops to allow small amounts of air to bleed out through the small orifice without interrupting flow.
• Vacuum Protection: If the pipe drains or a surge occurs, the float drops instantly, allowing air to rush in and prevent pipeline collapse.

Key Operation Note: In our Compound Air Release Valve, the float moves dynamically based on buoyancy. When the water level rises, the float seals the nozzle; when air accumulates, the buoyancy decreases, allowing the air to be discharged automatically.

Why Choose FYL Compound Air Release Valve?

We have optimized our manufacturing process to ensure that every Compound Air Release Valve leaving our Tianjin factory exceeds industry standards in performance and reliability.

1. Superior Exhaust Capacity
Compared to single-hole designs, our Compound Air Release Valve features a significantly larger exhaust volume. Testing shows its capacity can reach several times that of ordinary double-hole valves, drastically reducing flow resistance and saving pumping energy.

2. Robust Construction & Longevity
We use high-grade ductile iron, stainless steel internals, and UV-resistant floats. This ensures that the FYL Compound Air Release Valve has a long service life even in harsh environments like sewage treatment plants or chemical processing facilities.

3. Integrated Vacuum Relief
The "Compound" nature means it is a 2-in-1 solution. It manages both high-velocity air discharge during startup and automatic air intake during shutdown to prevent negative pressure ruptures.

Simple photos

Other type air valve

Compound Air Release Valve Specification

Pressure Rating: PN10/PN16/PN25

Working Medium: Hot and cold water

Working Temperature: 0°C to 80°

Stainless Steel Float Ball

End connection: RF Flange

BS/ASME/JIS/DIN

Dimension(mm)

Global Application Fields

The Compound Air Release Valve produced by FYL is a versatile tool used across multiple industries worldwide:

• Water Conservancy: Municipal water supply and long-distance transmission lines.

• Sewage Treatment: Preventing gas pockets in wastewater pumping stations.

• Industrial Use: Chemical industry, petroleum, and power plant cooling systems.

• Urban Construction: High-rise building fire protection and HVAC systems.

• Pre-sales: 7×24 technical consultation and tailored solutions. We provide detailed drawings and performance data for our Compound Air Release Valve to ensure it fits your system perfectly.

• In-sale: Regular production updates and rigorous quality control feedback.

• After-sales: On-site installation guidance and a dedicated satisfaction follow-up team to ensure your system performs at its peak.