Triple function air valve full bore version with anti-surge anti-water hammer device FBA
- 1” – 2 - DN50 to 250
- PN 10 – 16 – 25 - 40
The surge alleviation, non slam combination automatic air valve Mod. FBA will ensure the proper operation of the pipeline network allowing the release of air pockets during working conditions, the entrance of large volumes of air during draining operations and pipeline bursts and the controlled air outflow, to prevent water hammer.
Technical features and benefits
Technical features and benefits
• Single chamber full bore body in ductile cast iron, PN 40 bar rated, provided with internal ribs for accurate guiding of the mobile block.
• Drainage valve produced, 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 air release system in AISI 316 (patent pending). The solid cylindrical floats, obtained by CNC machining only, avoid deformations and ensure a great sliding precision inside the body processed ribs and a perfectly vertical thrust.
• Nozzle and gasket holder, part of air release system, entirely made in AISI 316.
• Maintenance can be easily performed from the top, without removing the air valve from the pipe.
• Anti water hammer system (also called AS function), never in contact with water, obtained by a spring and shaft in stainless steel, disk with adjustable nozzles for air outflow control.
• Cover in ductile and screen in stainless steel as a standard execution, to prevent the entrance of insects, with optional outlet for submerged applications.
Applications
Applications
• Main transmission lines.
• Water distribution networks.
• Irrigation systems.
• In general this model is used at the pumps, on changes in slope ascending, and at the critical points of the pipeline subjected to water hammer and column separation.