AVK CENTRIC DOUBLE FLANGED BUTTERFLY VALVE, PN 10/16

Description

Key  Features

• Bonded vulcanized liner of drinking water approved EPDM with excellent compression set and thus the ability to regain its original shape
• Streamlined disc with minimum flow resistance
• Profiled disc edge requires minimal deformation of the liner to achieve tight sealing, and results in less wear of the liner
• Disc, shaft and conical pin of duplex steel in DN≤200. Disc of rilsan coated ductile iron, and shaft and conical pin of stainless steel in DN≥250
• Shaft bearings of PTFE coated steel
• Top shaft sealing: DN≤350: Bronze bushing with two EPDM O-rings, DN≥400: EPDM O-ring in bushing fixed with countersunk screws of galvanized steel
• Bottom shaft sealing: DN≤350: Plug of galvanized steel with a copper sealing ring, DN≥400: Axial bearing and ring of alubronze and an EPDM O-ring, protected by a cover plate of galvanized steel
• Low torques as a result of the profiled disc edge and fixed liner design
• Ductile iron body with 200 μ epoxy coating blue RAL 5017

Information

AVK centric butterfly valves with fixed liner feature an outstanding seating concept. The rubber is injection moulded directly on the valve body forming a permanent bond. Consequently, there is no risk of deformation or dislocation of the liner making the valves suitable under vacuum conditions. The combination of the profiled disc edge and the excellent AVK rubber quality ensures maximum durability of the liner.

Standards

• Face to face according to EN 558 table 4 basic series 13
• Standard flange drilling to EN1092 (ISO 7005-2), PN 10/16
• WIMES 8.09 Compliant
• Drinking Water Inspectorate Regulation 31 compliant

Test/Approvals

• Hydraulic test according to EN 1074-1 and 2 / EN 12266.
• Approved according to KIWA Certificate K 6070/05