AVK SWING CHECK VALVE WITH FREE SHAFT, PN 16, DN50-300
Cast iron seated BS body, rubber seated disc, EPDM rubber/brass bushing
Resilient seated swing check valve with free shaft end 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 acid-resistant stainless steel in DN 50-200 and ductile iron in DN 250-300, 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 with steel insert fully vulcanized with EPDM rubber. Due to its light weight a minimum of force is required to open and close the valve.
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.
Possible to mount lever and spring to prevent water hammer at high velocities
Reference nos. and dimensions:
|AVK ref. no.||DN
|Installation, Operation & Maintenance|
|Outline drawings DWG|
|Outline drawings DXF|
|Outline drawings IGS|
|Outline drawings STEP|
|1.||Bolt||Stainless steel A4|
|2.||Nut||Stainless steel A2|
|3.||Washer||Stainless steel A4|
|5.||Disc||EPDM encaps. steel|
|6.||Body||Ductile Iron GJS-500-7|
|8.||Bolt||Stainless steel A2|
|9.||Pin||Stainless steel A4|
|10.||Hinge||Stainless steel 316|
|11.||Key||Stainless steel A4|
|12.||Bonnet||Ductile Iron GJS-500-7|
|13.||Washer||Stainless steel A4|
|14.||Thrust plate||Stainless steel|
|15.||Bushing, closed||DZR brass|
|16.||Tab washer||Stainless steel A4|
|17.||Bolt||Stainless steel A4|
|18.||Shaft||Stainless steel 420|
|21.||Bushing, open||DZR brass|
- Designed according to EN 1074 - 3
- Face to face according to EN 558 Table 2 Basic Series 10
- Standard flange drilling to EN1092 (ISO 7005-2), PN 10/16
- WIMES 8.09 Compliant
- Drinking Water Inspectorate Regulation 31 compliant