Double Orifice Air Valve
The Duvalco Double Orifice Air Valve is supplied with an isolation valve and square cap. It is designed to efficiently release and admit air in pressurized water systems, protecting pipelines from vacuum conditions, pressure surges, and air blockages. Engineered to meet the demands of potable water applications, it is manufactured to the highest quality standards.
Design standard
EN 1074-4
Body material
Durable ductile iron for long service life
Float mechanism
SS316 stainless steel floating ball for excellent corrosion resistance
Function
Double orifice design allows high-capacity air release and precise small air discharge during normal operation
Coating
Fusion-bonded epoxy coating (WRAS-approved) for both internal and external corrosion protection
All materials in contact with water comply with BS 6920
ensuring suitability for potable water applications
Working temperature
0°C to 80°C
Flange connection
EN 1092-2, PN10/PN16
Size range
DN50–DN200
