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Double Orifice Air Valve Manufacturer

Double Orifice Air Valve is a type of air release valve equipped with two orifices for efficient air management in pipeline systems. It is designed to release large volumes of air during filling, admit air during drainage, and continuously remove small amounts of trapped air to ensure smooth operation and prevent pipeline damage.

Judberd is competitive manufacturer for air valves, below are our double orifice air valve for your reference.WRAS,NSF,ACS,DVGW etc certificates are available.

Double Orifice Air Release Valve

Double Orifice Air Release Valve with Directional Venting

Double Orifice Air Release Valve

Double Air Release valve with brass ball Isolation Valve

Drawing

We have selected a commonly used model as an example. If you choose a different model, please contact us to request the corresponding drawing.

Remarks: Design according to EN 1074-4:2000 , Flange according to EN 1092-2:1997, Testing according to EN 12266-1:2012.Suitable Media: water, neutral oil

Working Principle

Double orifice air valve consists of two independent air release mechanisms:

Large Orifice (Air Intake and Exhaust Valve)

Expels large volumes of air during pipeline filling to prevent air pockets.
Allows air to enter during drainage or sudden pressure drops to prevent vacuum formation.
Small Orifice (Continuous Air Release Valve)

Releases small air bubbles that accumulate in the pipeline during normal operation.
Seals automatically when the valve chamber is filled with water, preventing leakage.

Functions

Prevents Air Blockage: Trapped air in high points of the pipeline can reduce flow efficiency. A double orifice air valve automatically releases air to maintain smooth operation.
Prevents Vacuum Formation: When the pipeline drains or experiences sudden pump shutdowns, negative pressure can lead to pipe collapse or damage. This valve rapidly admits air to stabilize pressure.
Reduces Water Hammer Effect: Rapid changes in pressure can cause pipe bursts or damage. A double orifice air valve helps control air movement, reducing water hammer impact.

Application

Municipal water supply networks, Wastewater treatment systems, Agricultural irrigation pipelines, Industrial fluid transportation, High-pressure or long-distance water pipelines

Common Issues and Solutions

Poor Air Release → May be due to internal blockage; regular maintenance is recommended.
Water Leakage After Air Release → Could be caused by a damaged float or worn-out seal; replace faulty components.
Loud Noise During Operation → Choose an air valve with a noise-reduction design.
Valve Body Cracks → May result from excessive pressure or external impact; select the correct pressure rating.

Factors to Consider When Purchasing a Double Orifice Air Valve

Pipeline working pressure and flow rate to choose the appropriate valve size and rating.
Operating environment (temperature, corrosion resistance) to select the right valve material (ductile iron, stainless steel, etc.).
Flange standard compatibility to ensure proper pipeline connection.
Manufacturer quality certifications such as ISO, AWWA, and EN standards.