Exhaust valve

Product Overview

Model: P41X, P11X

The automatic exhaust valve is applied for pipeline air‑venting in independent heating systems, central heating systems, heating boilers, central air‑conditioning, floor heating and solar heating systems.

Gas inside the pipeline tends to rise and accumulate at the highest position of the whole system, where the exhaust valve is normally mounted. When gas flows into the valve chamber and gathers at the upper section, internal pressure increases. Once gas pressure exceeds system pressure, the water level inside the chamber falls, the float descends and opens the exhaust port to release trapped gas. After gas is discharged, water level rises and lifts the float to close the vent automatically.

In case of negative pressure occurring inside the pipeline, the water level inside the valve chamber drops and opens the exhaust port. External atmospheric air will flow into the system through the port to avoid damage caused by negative pressure.

The bonnet on valve body shall remain open during normal operation. Tightening the bonnet will disable exhaust function. This exhaust valve can be installed together with a stop valve for convenient maintenance.

Design & Test Standards

Technical Specifications

Bill of Material

Product Features

1. Automatically exhaust accumulated gas from heating pipeline system; also supply air to eliminate system negative pressure.
2. Float‑driven self‑operating structure, no extra power required.
3. Simple structure, reliable performance, easy installation.
4. Can match with stop valve for isolated maintenance without system shutdown.
5. Bonnet can be tightened to shut off exhaust function for special operation needs.
   
   

Application

Independent heating system, central heating system, heating boiler, central air‑conditioning, floor heating system, solar heating water pipeline systems for automatic air venting and negative‑pressure protection.

Packing & Documents