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AVK CONTROL VALVE, PRESSURE REDUCING, PN10/16

Reduced bore, SS-304/DI trim

Control valve, pressure reducing, for drinking water or other neutral liquids to max. 70°C

AVK series 869 diaphragm actuated pressure reducing control valves (PRV) automatically maintain a constant outlet pressure regardless of flow demand or changes in inlet pressure.

A replaceable spring inside the pilot makes it possible to operate in different pressure ranges and still keep the high precision. Precise setting and easy adjustment on a knob on the pilot.

Variant 869/200X-001
Connection: Flanged
Material: Ductile iron
DN: DN80 - DN500
PN: PN10/16

Features

  • The lifted seat design controls the flow around the plug so that in case of cavitation this happens with minimal damage away from plug and seat
  • The parabolic shape of the plug creates a smooth regulating characteristic with low gain around the near-closed positions improving control performance at low flow
  • Non-symmetric axial position of rubber diaphragm results in low stretch stress when closed
  • Body and bonnet of ductile iron with 300 µm coating of blue RAL 5017 fusion bonded epoxy to DIN 3476 and applied in a process approved by GSK and WRAS-DVGW/W270/UBA
  • All rubber parts approved for drinking water
  • All non-coated internals made of stainless steel or bronze
  • Pilot, seat, fittings and piping in stainless steel AISI304
  • A needle valve between upstream and control chamber allows for adjustment of the regulation reaction time
  • Closing the needle valve isolates the control chamber and fixes the main valve position allowing for service of the pilot
  • Integrated lifting eyes on body from DN150 for ease of handling

Downloads

Datasheet
Tender Text
Installation, operation and maintenance manuals

Reference nos. and dimensions:

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AVK ref. no. DN
mm		 Flange
drilling		 Press. Range
bar		 L
mm		 L2
mm		 W1
mm		 W2
mm		 H3
mm		 Theoretical
weight/kg
869-0080-20-1340001 80 PN10/16 5 - 10 375 310 108 231 441 24
869-0080-20-1340002 80 PN10/16 10 - 16 375 310 108 231 441 24
869-0100-20-1340001 100 PN10/16 5 - 10 405 350 117 241 457 28
869-0100-20-1340002 100 PN10/16 10 - 16 405 350 117 241 457 28
869-0150-20-1340001 150 PN10/16 5 - 10 530 480 143 268 518 46
869-0150-20-1340002 150 PN10/16 10 - 16 530 480 143 268 518 46
869-0200-20-0340001 200 PN10 5 - 10 615 600 203 293 608 96
869-0200-20-1340001 200 PN16 5 - 10 615 600 203 293 608 96
869-0200-20-1340002 200 PN16 10 - 16 615 600 203 293 608 96
869-0250-20-0340001 250 PN10 5 - 10 745 730 254 318 712 157
869-0250-20-1340001 250 PN16 5 - 10 745 730 254 318 712 157
869-0250-20-1340002 250 PN16 10 - 16 745 730 254 318 712 157
869-0300-20-0340001 300 PN10 5 - 10 850 850 277 343 796 221
869-0300-20-1340001 300 PN16 5 - 10 850 850 277 343 796 221
869-0300-20-1340002 300 PN16 10 - 16 850 850 277 343 796 221
869-0350-20-0340001 350 PN10 5 - 10 980 980 302 373 859 324
869-0350-20-1340001 350 PN16 5 - 10 980 980 302 373 859 324
869-0350-20-1340002 350 PN16 10 - 16 980 980 302 373 859 324
869-0400-20-0340001 400 PN10 5 - 10 1100 1100 355 400 981 498
869-0400-20-1340001 400 PN16 5 - 10 1100 1100 355 400 981 498
869-0400-20-1340002 400 PN16 10 - 16 1100 1100 355 400 981 498
869-0450-20-0340001 450 PN10 5 - 10 1200 1200 398 427 1048 636
869-0450-20-1340001 450 PN16 5 - 10 1200 1200 398 427 1048 636
869-0450-20-1340002 450 PN16 10 - 16 1200 1200 398 427 1048 636
869-0500-20-0340001 500 PN10 5 - 10 1250 1250 465 465 1167 938
869-0500-20-1340001 500 PN16 5 - 10 1250 1250 465 465 1167 938
869-0500-20-1340002 500 PN16 10 - 16 1250 1250 465 465 1167 938
Enquiry
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Components

1. O-ring EPDM rubber
2. Plug sealing EPDM rubber
3. Washer Stainless steel A2
4. Diaphragm EPDM rubber
5. Bolt Stainless steel A2
6. Nut Stainless steel A2
7. Stem Stainless steel AISI 431
8. Stem guide Stainless steel AISI 304
9. Bonnet Ductile iron GJS-500-7 (GGG-50)
10. Spring Stainless steel AISI 304
11. Washer Bronze CC499K
12. Diaphragm support Ductile iron GJS-500-7 (GGG-50)
13. Disc retainer Ductile iron GJS-500-7 (GGG-50)
14. Regulating plug Stainless steel AISI 304
15. Seat Stainless steel AISI 304
16. Body Ductile iron GJS-500-7 (GGG-50)
17. Filter Stainless steel AISI 304
18. Plug Stainless steel AISI 304
19. Pilot valve Stainless steel AISI 304
20. Needle valve Stainless steel AISI 304
21. Control orifice Stainless steel AISI 304

Test/Approvals

  • Hydraulic test according to EN 1074-1 and 5/ EN12266
  • WRAS approved materials

Standards

  • EN 1074-5
  • Face-to-face dimension according to EN 558, Series 1
  • Flange drilling to EN1092, PN10/16
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