AUDCO Butterfly Valve is a Wafer type Valve with an integrally moulded elastomer body liner. Designed to outperform loose liners, AUDCO Butterfly Valve elastomer liner is moulded directly in the body bore and vulcanised in-situ, making it last the entire life of the valve. The result - a valve that requires no form of maintenance. A perfect FIT AND FORGET valve. AUDCO Butterfly Valve is available in different combinations of body, liner and disc materials to suit a wide range of line fluids, a size range of 50 to 600 mm, and a pressure rating up to PN 20. This permits its use in a wide range of applications making AUDCO Butterfly Valve a truly versatile valve.
ADVANTAGES OF INTEGRALLY MOULDED LINER
LONGER VALVE LIFE
Integral moulding permits maximising the use of plasticiser in elastomer formulation. This ensures a smooth surface, thereby reducing friction between the disc and liner. In-situ vulcanisation imparts greater strength to the liner. Reduced friction and high strength of the seat extend valve life.
AUDCO Butterfly Valve integrally moulded body liner is not subjected to stretching, which is the cause for fatigue in loose-lined elastomers. Fatigue in elastomer results in
excessive wear and subsequent tearing of the liner. A torn liner can be easily swept into the line causing extensive damage to expensive down-stream equipment. Though in valves with loose liners the seat can be replaced, by the time it is done the line fluid would have caused some corrosion to the valve body. This causes imperfect seating of the new liner, resulting in leakages. These drawbacks are eliminated in AUDCO Butterfly Valve integrally moulded liner design
AUDCO Butterfly Valve has a gasket integral to the body which eliminates the need for a separate gasket between the valve face and companion flange. In
addition, as theliner is bonded to the body, it will not hang out or get pinched during installation. Damage to expensive replaceable seats is thereby eliminated.
In AUDCO Butterfly Valve the body liner incorporates flats at the top and the bottom where the shaft passes through, providing a wide sealing area. The secondary
sealing is by two ‘O’ rings that are moulded at the top and bottom of the seat, which get compressed around the shaft. A weatherseal at the top of the shaft prevents any ingress of foreign material into the valve.
FULLY ISOLATED VALVE INTERNALS
In the AUDCO Butterfly Valve, the rubber liner incorporates flats at the top and the bottom where the shaft passes through, providing a wide sealing area. This ensures the line fluid does not enter the stem area and get contaminated. The secondary sealing is by two ‘O’ rings that are moulded at the top and bottom of the seat, which get compressed around the shaft.
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