This Combination Air Valve exhausts large amount of air during the filling process to ensure that the air can reach the outlet at very high velocity without the float air valve being elevated and the mechanism shutting prematurely. Admits large quantities of air during line breaks and draining operations to avoid vacuum in the sewage pipes. Expulsion of air pockets accumulated in the filling process while pressurized.
Material Specification
- Body, Cover : Ductile Iron /Cast Iron
- Float(s) : Stainless Steel
- Orifice balls : Stainless Steel/ ABS Plastic
- Internal, external bolts, nuts : Stainless Steel
- Guides, seat ring, guide ring : ABS Plastic
- Sizes : DN50 – DN200
- Pressure rating : PN10/16/25/PN40
- Hydraulic Test : 1.1xPN for Seat & 1.5xPN for Body
- Coating : Nontoxic Epoxy Internally & Externally
