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AVK CONTROL VALVE, CONSTANT FLOW, PN10/16

Reduced bore, SS-304/DI trim

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

AVK series 869 diaphragm actuated flow control valves (CFV) automatically secure a maximum flow rate by throttling the valve if the flow exceeds the setpoint.

Feed back to the pilot is by means of the pressure drop across an orifice at the outlet.

The replaceable orifice makes it possible to regulate within a large range of flows and still keep the precision. Setting and adjustment on a control knob on the pilot.

Variant 869/202X-001
Connection: Flanged
Material: Ductile iron
DN: DN80 - DN600
PN: PN 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		 Flow range
m3/h		 L
mm		 L1
mm		 L2
mm		 W1
mm		 W2
mm		 H3
mm		 Theoretical
weight/kg
869-0080-20-1340020 80 PN10/16 7 - 18 387 327 310 108 257 458 26
869-0080-20-1340021 80 PN10/16 14 - 36 387 327 310 108 257 458 26
869-0080-20-1340022 80 PN10/16 27 - 65 387 327 310 108 257 458 26
869-0100-20-1340020 100 PN10/16 7 - 18 417 367 350 117 267 474 30
869-0100-20-1340021 100 PN10/16 14 - 34 417 367 350 117 267 474 30
869-0100-20-1340022 100 PN10/16 23 - 57 417 367 350 117 267 474 30
869-0150-20-1340020 150 PN10/16 30 - 75 542 497 480 143 294 535 48
869-0150-20-1340021 150 PN10/16 50 - 120 542 497 480 143 294 535 48
869-0150-20-1340022 150 PN10/16 80 - 200 542 497 480 143 294 535 48
869-0200-20-0340020 200 PN10 50 - 130 627 617 600 203 319 625 98
869-0200-20-0340021 200 PN10 115 - 290 627 617 600 203 319 625 98
869-0200-20-0340022 200 PN10 150 - 339 627 617 600 203 319 625 98
869-0200-20-1340020 200 PN16 50 - 130 627 617 600 203 319 625 98
869-0200-20-1340021 200 PN16 115 - 290 627 617 600 203 319 625 98
869-0200-20-1340022 200 PN16 150 - 365 627 617 600 203 319 625 98
869-0250-20-0340020 250 PN10 80 - 200 757 747 730 254 344 729 159
869-0250-20-0340021 250 PN10 140 - 350 757 747 730 254 344 729 159
869-0250-20-0340022 250 PN10 230 - 530 757 747 730 254 344 729 159
869-0250-20-1340020 250 PN16 85 - 200 757 747 730 254 344 729 159
869-0250-20-1340021 250 PN16 140 - 350 757 747 730 254 344 729 159
869-0250-20-1340022 250 PN16 230 - 570 757 747 730 254 344 729 159
869-0300-20-0340020 300 PN10 120 - 300 867 867 850 277 369 813 223
869-0300-20-0340021 300 PN10 175 - 430 867 867 850 277 369 813 223
869-0300-20-0340022 300 PN10 340 - 762 867 867 850 277 369 813 223
869-0300-20-1340020 300 PN16 120 - 300 867 867 850 277 369 813 223
869-0300-20-1340021 300 PN16 175 - 430 867 867 850 277 369 813 223
869-0300-20-1340022 300 PN16 340 - 825 867 867 850 277 369 813 223
869-0350-20-0340020 350 PN10 170 - 420 997 997 980 302 399 876 326
869-0350-20-0340021 350 PN10 225 - 555 997 997 980 302 399 876 326
869-0350-20-0340022 350 PN10 510 - 1039 997 997 980 302 399 876 326
869-0350-20-1340020 350 PN16 170 - 420 997 997 980 302 399 876 326
869-0350-20-1340021 350 PN16 225 - 555 997 997 980 302 399 876 326
869-0350-20-1340022 350 PN16 510 - 1250 997 997 980 302 399 876 326
869-0400-20-1340021 400 PN16 370 - 905 1129 1129 1100 355 430 998 505
869-0400-20-1340022 400 PN16 525 - 1285 1129 1129 1100 355 430 998 505
869-0450-20-0340020 450 PN10 280 - 690 1217 1217 1200 398 457 1065 645
869-0450-20-0340021 450 PN10 445 - 1090 1217 1217 1200 398 457 1065 645
869-0450-20-1340020 450 PN16 280 - 690 1217 1217 1200 398 457 1065 645
869-0450-20-1340021 450 PN16 445 - 1090 1217 1217 1200 398 457 1065 645
869-0450-20-1340022 450 PN16 675 - 1640 1217 1217 1200 398 457 1065 645
869-0450-20-1340022 450 PN16 675 - 1640 1217 1217 1200 398 457 1065 645
869-0600-20-1340022 600 PN16 970 - 2360 1462 1462 1450 509 540 1297 1292
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
10. Spring Stainless steel AISI 304
11. Washer Bronze CC499K
12. Diaphragm support Ductile iron GJS-500-7
13. Disc retainer Ductile iron GJS-500-7
14. Regulating plug Stainless steel AISI 304
15. Seat Stainless steel AISI 304
16. Body Ductile iron GJS-500-7
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
22. Orifice plate flange Stainless steel AISI 304
23. Orifice plate Stainless steel AISI 304
24. Gasket EPDM rubber

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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