Double Orifice Air Release Valve Manufacturer in India

Air accumulation in pressurized pipelines can restrict flow, increase head loss and contribute to unstable operating conditions. A double orifice air release valve is designed to handle different air-management requirements during pipeline filling, normal operation and draining, with separate orifice functions for controlled air release and larger air movement. Speciality Valve is a Double Orifice Air Release Valve Manufacturer in India, offering automatic air-management valves for water transmission, wastewater, irrigation and industrial pipeline systems.

Valve Configuration:

The double-orifice arrangement provides different air-handling functions within one valve assembly.

• Small Orifice: Releases accumulated air during normal pressurized pipeline operation.
• Large Orifice: Allows larger quantities of air to enter or leave during filling and draining conditions.
• Float Assembly: Responds to changes in liquid level inside the valve.
• Valve Seat: Provides closure when the required sealing condition is reached.
• Body and Bonnet: Form the pressure-containing enclosure.
• Automatic Operation: Normally requires no external power supply.

Correct placement is important because air valves are generally installed at locations where air is likely to accumulate, such as pipeline high points.

Technical Details:

• Valve Type: Double Orifice Air Release Valve
• Nominal Diameter: DN80 to DN200
• Pressure Rating: Class 150 to Class 300; PN16 to PN40
• Body: Ductile Iron / Cast Iron
• Ball: SS304
• Bonnet: Ductile Iron / Cast Iron
• Stem: SS420
• Stem Nut: SS420
• Gasket: NBR
• Operation: Automatic float-operated
• Design Standard: DIN 3352
• Flanged End Dimension: DIN 2501
• Inspection and Testing: BS 6755

Actual pressure-temperature capability and dimensions depend on the selected construction.

Materials:

• Body: Ductile iron or cast iron
• Bonnet: Ductile iron or cast iron
• Float/Ball: SS304
• Stem: SS420
• Stem Nut: SS420
• Washer: SS304 or carbon steel
• Nut and Bolt: SS304 or carbon steel
• Gasket: NBR
• Gland and Cap: Ductile iron or cast iron

Material selection should account for water chemistry, operating pressure, temperature and the environment surrounding the valve.

Industries and Applications:

• Water Transmission: Releases accumulated air from long-distance pipelines.
• Water Treatment: Supports stable operation of pressurized water networks.
• Wastewater: Suitable for compatible rising mains and wastewater pipelines.
• Irrigation: Air management in agricultural water-transfer systems.
• Mining: Used on suitable water-transfer pipelines.
• Power Generation: Applicable to cooling-water and utility-water systems.
• Desalination: Air management in compatible water transmission systems.

Performance Benefits:

• Automatic removal of accumulated air
• Supports reduction of air-lock conditions
• Provides large air discharge during pipeline filling
• Allows air admission during draining
• Helps maintain effective pipeline flow area
• Operates without external electrical power
• Available in corrosion-resistant internal materials
• Suitable for different pressure configurations

Installation Considerations:

The valve should be installed where air accumulation is expected and where adequate access is available for inspection and maintenance. Pipeline profile, operating pressure, filling velocity and draining conditions should be considered when determining the required air-release capacity.

The valve size should not be selected solely from the pipeline diameter. Air volume, filling and draining rates, operating pressure and the required air-admission capacity are important for proper sizing.

Speciality Valve manufactures automatic air-management solutions for pressurized pipeline systems, with body, internal materials and pressure configurations selected according to service requirements. For project-specific requirements, contact Double Orifice Air Release Valve Manufacturer in India,

Visit us: https://www.specialityvalve.com/product/double-orifice-air-release-valve/