Single Orifice Air Release Valve

Air accumulation in pressurised pipelines can reduce flow efficiency and affect the operation of water networks. A single-orifice air valve, also known as an Air Release Valve (ARV), automatically releases accumulated air from a pressurised pipeline during normal operation. Single Orifice Air Valve Suppliers in Egypt can provide these valves for municipal water, irrigation and water-treatment pipelines where continuous air release is required.

Technical Specifications

Materials & Components

• Body: Ductile Iron EN-GJS-400-15 / Cast Iron EN-GJL-250

• Cover: Ductile Iron / Cast Iron

• Float: Stainless Steel / Engineering Polymer

• Float Guide: Stainless Steel / Polymer

• Orifice: Stainless Steel / Brass

• Seat: EPDM / NBR

• Bolting: Stainless Steel / Zinc-Plated Carbon Steel

• Coating: Fusion-Bonded Epoxy / Approved Protective Coating

Ductile iron bodies and stainless-steel internal components are commonly specified for water-service air valves; AWWA C512 also recognises ductile iron and stainless-steel material grades within its scope.

Standards

For water-supply, applications may include EN 1074-4 for air valves used in water-supply systems and EN 1092-2 for relevant cast-iron and ductile-iron flange connections. ASME B16.42 may apply where compatible ductile-iron flanges are specified. Coating and potable-water approval requirements should follow the relevant project specification. .