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AVK SWING CHECK VALVE, METAL SEATED, PN10/16

Right hand side lever and weight, DN50-300

AVK headquater in Skovby Galten, Denmark

Contact

AVK International A/S

Bizonvej 1, Skovby, 8464 Galten, Denmark

Metal seated swing check valve with lever and weight for drinking water and neutral liquids to max. 70°C

AVK series 41 swing check valves come with both metal and resilient seats. Installed in pumping applications to prevent back flow they can be used for drinking water as well as waste water. The disc is connected to the shaft via a flexible bush that allows disc and valve seat to adjust exactly. All interior parts are stainless steel or coated with drinking water approved epoxy or EPDM. The series 41 valves are available with either closed bushings or protruding shaft end where a lever with a weight or a spring can be fitted to mitigate pressure surges.

Variant 41/36-009
Connection: Flanged
Material: Ductile Iron
DN: DN50 - DN300
PN: PN16

Features

  • Metal seat in gunmetal bronze for high durability
  • Shaft fitted in the bonnet allowing for easy maintenance without removing valve from pipeline
  • Shaft in 1.4021 (AISI 420), bolts and washers in 1.4301 (AISI 304) acid resistant stainless steel
  • Position indicating lever with an adjustable weight that aids the disc in closing quickly to reduce water hammer
  • Hinge of stainless steel for sizes ≤ DN 200; ductile iron coated with drinking water approved epoxy for larger
  • Ductile iron disc covered with drinking water approved EPDM
  • Bonnet gasket lying in a groove between bonnet and body prevents blow-out
  • All seals and coatings with contact to the fluid are approved for drinking water - coating is blue, 250µm fusion bonded epoxy
  • Disc mounted in a flexible rubber bushing allowing it to tilt slightly in all directions and adjust exactly to the valve seat
  • Bosses on each side of the valve seat allow for installation of pressure gauge, by-pass, etc.

Downloads

Datasheet
Tender Text

Reference nos. and dimensions:

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AVK ref. no. DN
mm		 Flange
drilling		 L
mm		 H
mm		 H3
mm		 W
mm		 W1
mm		 Theoretical
weight/kg
41-050-36-01800 50 PN10/16 203 125 210 250 155 13
41-080-36-01800 80 PN10/16 241 140 240 245 145 19
41-100-36-01800 100 PN10/16 292 155 265 270 170 22
41-150-36-01800 150 PN10/16 356 220 360 340 205 41
41-200-36-00800 200 PN10 495 250 420 395 230 74
41-200-36-01800 200 PN16 495 250 420 395 230 64
41-250-36-00800 250 PN10 622 347 560 712 409 145
41-250-36-01800 250 PN16 622 347 560 712 409 145
41-300-36-00800 300 PN10 699 395 650 715 405 195
41-300-36-01800 300 PN16 699 395 650 715 405 195
Enquiry
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Components

1. Bolt/nut Stainless steel A2
2. Body Ductile iron GJS-500-7 (GGG-50)
3. Washer Stainless steel A2
4. Disc Ductile iron, EPDM encapsulated
5. Hinge DN≤200 SS, DN≥250 DI
6. Gasket EPDM rubber
7. Face ring Bronze CC491K (RG5)
8. O-ring NBR rubber
9. Seat ring Bronze CC491K (RG5)
10. Washer Copper
11. Air plug Stainless Steel 1.4401 (316)
12. Bonnet Ductile iron GJS-500-7 (GGG-50)
13. Connector Stainless steel CF8M (1.4408)
14. Bushing, closed Brass CW614N
15. Shaft Stainless steel 1.4021 (420)
16. O-ring NBR rubber
17. O-ring NBR rubber
18. Spacer Stainless Steel 1.4401 (316)
19. Key Stainless Steel 1.4401 (316)
20. O-ring NBR rubber
21. Bushing, open Brass CW614N
22. Lever Ductile iron GJS-500-7 (GGG-50)
23. Weight Ductile iron GJS-500-7 (GGG-50)
24. Screw Stainless steel A2

Test/Approvals

  • Hydraulic test according to EN 1074-3/ EN12266 |
  • Seat: 1.1×PN (in bar), Body: 1.5×PN (in bar).

Standards

  • Designed according to EN 1074 - 3
  • Face-to-face dimension according to EN 558 Table 2 Basic Series 10
  • Standard flange drilling to EN1092-2 (ISO 7005-2), PN10/16
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