Presenting the exquisite Combined Air Vacuum & Release Valve, meticulously crafted to perfection.
Model: AV4F3F/AV3F2F - A blend of precision and reliability in every detail.
Application Range - Unleashing Versatility
• Vital for Main transmission lines or Pump suction lines, ensuring seamless operation.
• Ideal for Water treatment and distribution networks, enhancing system efficiency.
• Perfect for optimizing Irrigation systems, boosting agricultural productivity.
• Expertly designed for use on changes in slope and at the high points of the pipeline, assuring robust performance.
Other Specification - Precision and Excellence
• Automatic functionality with a Full bore design for unparalleled efficiency.
• Designed specifically for Medium: Water, delivering flawless results.
• Maximum pressure tolerance of 40 bar, ensuring durable performance under pressure.
• Minimum pressure adaptability of 0.2 bar, customizable for lower requirements upon request.
• Available in sizes DN50 - 300 for Ductile Iron, offering a wide range of applications.
• Sizes DN50 - 200 available for Stainless Steel (CF8 / CF8M / Duplex), ensuring top-notch material options.
Features - Innovation at its Finest
. A single chamber with a golden ratio design, creating a fabulous and appealing outline.
. Available in full bore and reduced bore body options in ductile iron and stainless steel, rated up to PN 40 bar, with internal ribs for precise guiding of the floats, ensuring unmatched accuracy.
. Features an aerodynamic flow path for air discharge, release, and entrance, optimizing air regulation.
. Includes tangential drainage to ensure complete and efficient draining.
. Equipped with cylindrical floats to achieve multiple functions with ease.
. Facilitates easy replacement between three floats and two floats from the top, offering flexibility.
. Incorporates a stainless steel plate under the bottom float to mitigate surged flow impact swiftly.
. Nozzles available in various port sizes to cater to the demands of different valve models.
. Standard flat venting screen in stainless steel to prevent insect ingress, with an upgraded umbrella venting screen available as a premium choice.
Material Specification - Assured Quality
Dimensions PN10/16/25/40(mm) for the AV4F3F&AV3F2F Models, crafted in Ductile Iron,
ensuring strength and durability.
Dimensions PN10/16/25/40(mm) for the AV4F3F&AV3F2F Models, available in Stainless Steel,
offering a corrosion-resistant and robust solution.
ABOUT US - Discover Excellence





Suzhou Walter Flow Control Equipment Co., Ltd. stands as a professional manufacturer of water system valves, offering OEM for Sluice Valves, gate valves, flange butterfly valves, check valves, strainers, pressure reducing valves, fire hydrants, and an array of international valve standards and specifications. Some products proudly feature FM/UL Certification. Walter is committed to enhancing consumer experience by providing expert advice and fluid control solutions tailored to customer needs. Additionally, we embrace custom designs and special requirements to meet diverse demands.
We eagerly await your inquiry, poised to deliver excellence!