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Duvalco - Model BA Series -Bonded Liner, Double Flange Butterfly Valve
FromDuvalco B.V
Duvalco BA double flanged butterfly valves are of the concentric type with vulcanised rubber liner for minimum operating loads and reduced wear and tear on the various components, designed to meet EN 593. Body construction is from ductile iron with discs available in ductile iron, stainless steel 304 or 316, shafts in 420, 431, 304 or 316 stainless steel. Aluminium bronze discs also available.
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BA/S59 BAL/S68
Double flanged type butterfly valve with centric disc and bonded liner. 100% bi-directional bubble tight shut off.
Applicable for all kinds of industries especially:
- shipbuilding
- offshore
- petrochemical
- heavy industry
- water treatment
- civil engineering
- Overall design generally in accordance to BS EN-593
- Face to face dimension in accordance to EN558 table 1, series 13 (except DN2000)
- On request available as eccentric type BAL/S68 or centric type BAL,
- with face to face dimensions according to EN558 table1, series 14
- Top flange and shaft end in accordance to ISO-5211
- Working pressure from 0.1 bar absolute up to 16 bar (test pressure 17.6 bar)
- Working pressure up to 25 bar (test pressure 27.5 bar) on request
- Suitable as end of line service valve
- DN50 – DN2000
- Mounting between flanges to DIN PN10, DIN PN16 or ASME class 150
- Other executions on request