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AVK METAL SEAT SWING CHECK VALVE, EN 1074, PN10/16

EN 558/48, alu-bronze seat, lever/weight RH side SS-316 shaft, brass bushings, EPDM, A4 bolts, 300µm blue EP coating

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Metal seat swing check valve to EN 1074 standard. 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 41/36-002
Connection: Flanged
Material: Ductile iron
DN: DN50 - DN300
PN: PN 16

Features

  • Clear way and full bore for low head loss and easy pig-cleaning
  • Metal seat in high strength alu-bronze for high durability. The light weight of the disc requires a minimum of force to open
  • Shaft fitted in the bonnet allowing for easy maintenance without removing valve from pipeline
  • Shaft, bolts and washers in 1.4404 (AISI 316L) 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, 300µm 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
Appendix
Tender Text
Installation, operation and maintenance manuals
Animation
AVK_swing_check_valve_animation.mp4

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
41-050-36-0180106 50 PN10/16 203 125 210 250 155 13
41-080-36-0180106 80 PN10/16 241 140 240 245 145 19
41-100-36-0180106 100 PN10/16 292 155 265 270 170 24
41-150-36-0180106 150 PN10/16 356 220 360 340 205 42
41-200-36-0080106 200 PN10 65
41-200-36-0180106 200 PN16 495 250 420 395 230 74
41-250-36-0080106 250 PN10 140
41-250-36-0180106 250 PN16 622 347 560 712 409 140
41-300-36-0180106 300 PN16 699 395 650 715 405 195
Enquiry
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Components

1. Bolt/nut Stainless steel A4
2. Body Ductile iron GJS-500-7 (GGG-50)
3. Washer Stainless steel A4
4. Disc Ductile iron, EPDM encapsulated
5. Hinge Stainless steel / ductile iron
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 1.4408 (CF8M), cast
14. Bushing, closed Brass CW614N
15. Shaft Stainless steel 1.4401 (316)
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 A4

Test/Approvals

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

Standards

  • EN 1074-3
  • Face-to-face dimension according to EN 558, Series 10
  • Flange drilling to EN1092, PN10/16
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