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AVK METAL SEAT SINGLE DOOR RECOIL CHECK VALVE, PN16

SS316 hinge pin, gunmetal seat

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AVK Valves Company Hong Kong Ltd.

Unit 01-02, 21/F, Pilkem Commercial Centre, 8 Pilkem Street, Jordan, Kowloon Hong Kong

Single door recoil check valve for drinking water, waste water and neutral liquids to max. 70°C

AVK series 641 recoil check valve is a high performance, fast acting, non-slam check valve used to prevent flow reversal without the need for any external devices such as lever and weights, damping units or internal springs etc. It is designed to work in extreme conditions and has low reverse velocity characteristics to provide minimum head rise on closure for high deceleration gradients. The valve is suitable for use in high lift or short length multi-pump water applications or in single pump systems in which rapid flow reversal takes place leading to potential surge conditions.

Variant 641/12-001
Connection: Flanged
Material: Ductile iron
DN: DN100 - DN500
PN: PN 16

Features

  • Fast acting closure response, it incorporates every mechanical and hydraulic assistance to aid quick valve closure
  • Low reverse velocity characteristics
  • Used on multi-pump systems and also single pump systems with high system deceleration gradients
  • Inclined seating angle to reduce disc travel
  • Integrally weight loaded door to accelerate movement
  • No additional devices required to effect valve closure, it is practically maintenance free
  • High reliability, it is designed based on extensive in-house laboratory research and proved by over 50 years of experience around the world
  • Body, stopper, cover and door of ductile iron with fusion bonded epoxy dark blue externally and light blue internally according to WRAS

Downloads

Datasheet

Reference nos. and dimensions:

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Reference no. DN
mm		 Flange
drilling		 H2
mm		 H3
mm		 L
mm		 L1
mm		 W
mm		 W7
mm		 Theoretical
weight/kg
641-0100-12-100000 100 PN16 166 376 496 190 311 110 79
641-0100-12-101000 100 PN16 166 376 496 190 311 110 79
641-0150-12-100000 150 PN16 220 478 610 242 406 120 143
641-0150-12-101000 150 PN16 220 478 610 242 406 120 143
641-0200-12-100000 200 PN16 280 612 762 293 533 140 270
641-0200-12-101000 200 PN16 280 612 762 293 533 140 270
641-0250-12-100000 250 PN16 330 703 965 409 610 160 417
641-0250-12-101000 250 PN16 330 703 965 409 610 160 417
641-0300-12-100000 300 PN16 380 814 1062 455 683 200 591
641-0300-12-101000 300 PN16 380 814 1062 455 683 200 591
641-0350-12-100000 350 PN16 457 935 1219 469 816 305 914
641-0350-12-101000 350 PN16 457 935 1219 469 816 305 914
641-0400-12-100000 400 PN16 457 935 1219 469 816 305 918
641-0400-12-101000 400 PN16 457 935 1219 469 816 305 918
641-0450-12-100000 450 PN16 572 1131 1295 508 979 406 1376
641-0450-12-101000 450 PN16 572 1131 1295 508 979 406 1376
641-0500-12-100000 500 PN16 661 1313 1473 546 1143 457 2018
641-0500-12-101000 500 PN16 661 1313 1473 546 1143 457 2018
2D/3D drawings
Enquiry
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Components

1. Body outlet Ductile iron GJS-500-7 (GGG-50)
2. Disc Ductile iron GJS-500-7 (GGG-50)
3. Face ring Bronze CC491K (LG2)
4. Seat ring Bronze CC491K (LG2)
5. O-cord EPDM rubber
6. Body inlet Ductile iron GJS-500-7 (GGG-50)
7. Hinge pin Stainless steel 1.4401 (AISI 316)
8. Bush Alu-bronze CW307G
9. O-cord EPDM rubber
10. Fasteners Stainless steel A4
11. Air vent Stainless steel AISI 316
12. Gasket Polyamide
13. Cover Ductile iron GJS-500-7 (GGG-50)
14. Stopper Ductile iron GJS-500-7 (GGG-50)
15. O-cord EPDM rubber

Test/Approvals

  • Hydraulic test according to EN 1074-1 / EN 12266

Standards

  • Manufacturer's standard
  • Flange drilling to EN1092, PN16
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