AVK SWING CHECK VALVE, METAL SEATED
Right side free shaft, DN50-300, PN10/16
Metal seated swing check valve with free shaft for drinking water and neutral liquids to max. 70° C
AVK swing check valves provide easy access to maintenance simply by unscrewing a few bolts and lifting the bonnet assembly including shaft and disc out of the body. The disc is fully vulcanized with EPDM rubber and is mounted in a nylon bushing allowing it to move slightly horizontally and vertically to achieve compete tightness. AVK swing check valves are available with closed bushings and with free shaft for mounting of lever and weight/spring.
|DN:||DN50 - DN300|
Full bore and low head loss.
Shaft of stainless steel fitted in the bonnet allowing easy access to maintenance.
Hinge of ductile iron tightened around the shaft with bolts to eliminate play and thus ensure durability
Bonnet gasket of EPDM rubber in a groove between bonnet and body.
Disc of epoxy coated ductile iron with face ring of aluminium bronze.
The disc is mounted in a nylon bushing, which allows it to move slightly both horizontally and vertically to close completely tight also in case of minor impurities in the seat.
Body and bonnet of ductile iron with epoxy coating to DIN 30677-2.
Possible to mount lever and weight for installations with an increased risk of water hammer at standard velocities. The weight is adjustable on the lever to achieve an optimum closing speed and a careful closing against the seat. Can be installed in different positions.
A guard covering the lever and weight is available as an optional extra.
Seat ring of aluminium bronze.
Reference nos. and dimensions:
|AVK ref. no.||DN
|Installation, Operation & Maintenance|
|Outline drawings DWG|
|Outline drawings DXF|
|Outline drawings IGS|
|1.||Bolt and nut||Stainless steel A2|
|2.||Body||Ductile Iron GJS-500-7|
|3.||Washer||Stainless steel A2|
|4.||Disc||EPDM encaps. duct. iron|
|5.||Hinge||DN≤200 SS, DN≥250 DI|
|7.||Face ring||Bronze CC491K|
|9.||Seat ring||Bronze CC491K|
|11.||Air plug||Stainless Steel 1.4401 (316)|
|12.||Bonnet||Ductile Iron GJS-500-7|
|13.||Connector||Stainless Steel 1.4408 (316)|
|14.||Bushing, closed||Brass CW614N|
|15.||Shaft||Stainless steel 1.4021 (420)|
|18.||Spacer||Stainless Steel 1.4401 (316)|
|19.||Key||Stainless Steel 1.4401 (316)|
|21.||Bushing, open||Brass CW614N|
Hydraulic test according to EN 1074-1 / EN 12266|
- Seat: 1.1 x PN. Body: 1.5 x PN.
- Designed according to EN 1074 - 3
- Standard flange drilling to EN1092 (ISO 7005-2), PN 16
- WIMES 8.09 Compliant
- Drinking Water Inspectorate Regulation 31 compliant