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AVK SILENT CHECK VALVE, PN10/16

Metal seated, flanged, EN1092, 304 trim/disc, 250µm blue EP coating

Flanged silent check valve for water, and water with glycol from -10°C to 110°C

Series 903 metal seated silent check valves are designed to prevent back flow in high temperature range pumping applications. The valve element movement is controlled via a central guide where a centrally mounted spring together with the short movement aids the quick closing that is essential in reducing shock associated with valve closure. The pumped media can be water, glycol or other clean, neutral liquids.
Variant 903/20-001
Connection: Flanged
Material: Ductile iron
DN: DN65 - DN600
PN: PN 10/16

Features

  • The combination of light disc, short stroke distance and fast closing spring design effectively mitigates slamming
  • Streamlined contour for low head loss
  • The special metal seat design ensures quick and easy trim replacement
  • Disc in cast, stainless steel 1.4308/CF8 (304), trim in AISI 304
  • 250µm blue RAL 5017 fusion bonded epoxy coating on both external and internal surfaces
  • On sizes DN200 and below the design allows for installation of a butterfly valve at the outlet without additional adapters; cf. measure reference C

Downloads

Datasheet

Reference nos. and dimensions:

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AVK ref. no. DN
mm		 Flange
drilling		 L
mm		 W
mm		 C
mm		 Theoretical
weight/kg
903-065-20-11000 65 PN10/16 140 185 27.5 7.9
903-080-20-11000 80 PN10/16 152 200 35.5 8.8
903-100-20-11000 100 PN10/16 184 235 46 15
903-125-20-11000 125 PN10/16 216 270 51 21
903-150-20-11000 150 PN10/16 248 300 61 31
903-200-20-01000 200 PN10 317 360 84 51
903-200-20-11000 200 PN16 317 360 84 51
903-250-20-01000 250 PN10 394 440 118 77
903-250-20-11000 250 PN16 394 440 118 77
903-300-20-01000 300 PN10 362 500 16 97
903-300-20-11000 300 PN16 362 500 16 97
903-350-20-01000 350 PN10 400 580 35.5 137
903-350-20-11000 350 PN16 400 580 35.5 137
903-400-20-01000 400 PN10 448 635 50 178
903-400-20-11000 400 PN16 448 635 50 178
903-450-20-11000 450 PN16 477 640 9.5 175
903-500-20-11000 500 PN16 525 715 8.5 227
903-600-20-11000 600 PN16 611 840 27 332
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Components

1. O-ring EPDM rubber
2. Body Ductile iron GJS-500-7 (GGG-50)
3. Seat Stainless steel 1.4308 (CF8), cast
4. Disc Stainless steel 1.4308 (CF8), cast
5. Spring Stainless steel 1.4301
6. Bush Stainless steel AISI 316
7. Bolt Stainless steel A2
8. Retainer ball Stainless steel AISI 304
9. O-ring EPDM rubber
10. O-ring EPDM rubber
11. Spacer Stainless steel 1.4301
12. Nut Stainless steel A2
13. Stem Stainless steel 1.4301

Test/Approvals

  • Seat: 1.1 x PN. Body: 1.5 x PN. 

Standards

  • EN 12334
  • Face-to-face dimension according to MSS SP-125 short globe
  • Flange drilling to EN1092, PN10/16
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