Bermad Fox 3F Series Metal Combination Full Port Air Valve with Rapid Filling Prevention (PN16)

The CSA Mod. FOX 3F is a full-bore high-quality single chamber double function combination air valve that evacuates air during pipeline filling, allows the release of air pockets from pressurized pipelines, and admits large volumes of air in the event of pipe draining or burst, to prevent vacuum and negative pressure conditions.

Entirely made of ductile cast iron, with air release system and seat in stainless steel, Fox 3F stands out for long-lasting performance and reliability.

Valves are manufactured to Australian requirements such as AS4020 , AS4158 , AS4087  and are tested in an fully accredited testing laboratory by SAI Global

FEATURES

• New low pressure sealing feature on PN16 valves less than 10Kpa 
• Designed in compliance compliant with AS4956
• High reliability and functionality from CSA manufacturing
• PN16 and PN35 pressure ratings
• Single chamber full bore body in ductile cast iron, PN 40 bar rated, provided with internal ribs for consistent and accurate guiding of the mobile block.
• Aerodynamic deflector in stainless steel to avoid premature closures.
• Drainage valve, produced by CSA, for chamber control and pressure relief during maintenance.
• Mobile block composed of a cylindrical float and upper disk in solid polypropylene, joined together by the CSA air release system in AISI 316 (pat. Pending). The solid cylindrical floats, obtained by CNC machining, avoid deformations and ensure a great sliding precision inside the body processed ribs and a perfectly vertical thrust.
• Nozzle and gasket holder, part of CSA air release system, entirely made in AISI 316 and designed with gasket compression control to prevent aging process and consequent leakage during working conditions.
• Maintenance can be easily performed from the top, without removing the air valve from the pipe.
• Cover in ductile and screen in stainless steel as a standard execution to prevent the entrance of insects, with three more optional outlets (for submerged applications, air inlet only, air outlet only).

APPLICATIONS

• Main transmission lines.
• Water distribution networks.
• Irrigation systems.
• In general this model is used on changes in slope and at the high points of the pipeline