Combination Air Release valve

Combination Air Release Valve Manufacturer in Italy – Valvesonly Europe

Valvesonly Europe is a trusted Combination Air Release Valve Manufacturer in Italy. Our valves are engineered to automatically release large volumes of air during pipeline filling and small residual air during operation. Built to EN and AWWA standards, they protect pipelines, improve efficiency, and extend system life.

Function & Working

Equipped with two orifices, these valves expel trapped air and prevent vacuum formation during filling, operation, and draining.

Advantages

Prevents air locking

Improves pump efficiency

Reduces surge and vibrations

Automatic continuous operation

Corrosion-resistant float design

Applications / Industries Served

Water networks

Irrigation

Wastewater treatment

Pumping stations

Hydropower & desalination

Materials

Component	Material Options	Standards / Grades	Typical Use
Body	Ductile Iron, WCB, Stainless Steel	EN-GJS-400, ASTM A216, A351	Water & wastewater
Float	Stainless Steel, Polypropylene	AISI 304, AISI 316	Long life, corrosion resistance
Seat	EPDM, NBR, PTFE	–	Tight sealing
Cover	Cast Iron, Stainless Steel	ASTM A216, A351	Durability

Technical Specifications

Design Standards: EN 1074-4, AWWA C512

Size Range: DN50 – DN300

Pressure Ratings: PN10 – PN40

End Connections: Flanged EN 1092-1 / ASME B16.5

Operation: Automatic air release

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