OPERATING MANUAL
07-2021
1/11
Concentric butterfly valves
P/N 4495 / 4496 / 4497
Page 1: ...OPERATING MANUAL 07 2021 1 11 OPERATING MANUAL Concentric butterfly valves P N 4495 4496 4497...
Page 2: ...OPERATING MANUAL 07 2021 2 11 CONTENTS 1 INTENDED USE 3 2 TECHNICAL DESCRIPTION 3 3 PRODUCT IDENTIFICATION MARKING 6 4 STORAGE TRANSPORT 7 5 INSTALLATION 7 6 OPERATION 10 7 SAFETY 10 8 WARRANTY 11...
Page 3: ...4497 are sealed in both directions of flow Application temperature range 0 C to 70 C Nominal pressure ratings 1 0 MPa 1 6 MPa Nominal diameter range P N 4495 lug valve DN40 DN600 mm P N 4496 flanged v...
Page 4: ...N 4497 Operating Manual for Gas Applications The minimum valve switchover time to close or open dependent on the DN size nominal diameter is listed in Table 2 DN mm Switchover time s 40 350 10 400 60...
Page 5: ...ium ring on which a rubber sealing ring is mounted The lug valves P N 4495 and the wafer valves 4497 feature either of the two end seal version A replaceable insert dovetail style in the size range of...
Page 6: ...location on the valve specified in the documentation features the nameplate which contains the following data Fig 1 Valve nameplate sticker 1 Manufacturer s company and country of origin 2 Manufactur...
Page 7: ...installation process do not leave any installation tools bolts nuts or welding wire inside of the piping or they can stop at the end seal the rubber insert or within the closure panel of the valve Th...
Page 8: ...s is that the deposits can be entrained from the upstream of the valve by the maximum possible flow passing the bottom part of the valve closure during the opening operation Fig 4 Fig 4 A Incorrect va...
Page 9: ...piping bend or tee Fig 5 Recommended distances from the piping bends For the valves in the size range of DN200 to DN2000 the axis of the closure drive shaft must be perpendicular to the centreline of...
Page 10: ...warranty granted by the manufacturer 7 SAFETY All installation and operation tasks related to the product shall be only be done by qualified professionals with sufficient training and experience to as...
Page 11: ...odifications on order The final selection of the product which meets the optimum criteria for the installation project in question is made by the installation designer who should consider this Operati...
