Valve Body And Cover In Ductile Cast Iron Small And Large Orifice Air Valve
Air valves in pipeline systems serve two primary functions.
1. The first is the release of accumulated air that comes out of solution within a pressurized pipeline. This air will result in bubble formation, which will gather at localized high points along the pipeline profile. This air accumulation will occur when the bubble’s buoyancy is greater than the energy to convey the bubble with the liquid.
Air valve used to release this free air is known as an air release valve.
2. The second function of an air valve is to admit air into the system when the internal pressure of the pipeline drops below atmospheric pressures. By admitting air into the pipeline as the internal vacuum condition develops, the magnitude of the vacuum pressure can be reduced and as a result help prevent the pipeline from experiencing excessive deflection and/or collapse as well as help prevent the formation of a full vacuum condition in which vapor cavities may form from the fluid vaporizing.
Air valves can contribute to the improvement of the efficiency of the water system.
|1||Body||Ductile Dast Iron GJS 500-7|
|2||Cap||Ductile Dast Iron GJS 500-7|
|4||Nozzle||Stainless Steel AISI 303||Stainless Steel AISI 316|
|5||Nut||Stainless Steel AISI 304||Stainless Steel AISI 316|
|7||Upper lever||Stainless Steel AISI 303||Stainless Steel AISI 316|
|8||Pivot||Stainless Steel AISI 303||Stainless Steel AISI 316|
|9||Lower lever||Stainless Steel AISI 303||Stainless Steel AISI 316|
|11||Float||Stainless Steel AISI 304|
|12||Nut||Stainless Steel AISI 304||Stainless Steel AISI 316|
|13||Screw||Stainless Steel AISI 304||Stainless Steel AISI 316|
|14||Ball valve||Nickel-Plated Brass OT58||Stainless Steel AISI 316|
|15||Flange||Ductile Dast Iron GJS 500-7||Painted Fe 37/AISI304/316|
Technical features and benefits:
Treated water max. 70°C; Designed in compliance with EN-1074/4.
Max. 40 bar;Standard connection 1", flanged on request. Flanges according to EN 1092/2.
Min. 0.1bar. Epoxy painting applies through fluidized bed technology blue RAL 5005.
Changes and variations on the flanges and painting details available on request.
Air flow performance charts:
Contact Person: Ms. TOBO