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AVK CONTROL VALVE, FLOAT LEVEL, MODULATING, PN10/16

Reduced bore, SS-304/DI trim

Control valve, float level, modulating, for drinking water or other neutral liquids to max. 70°C

AVK series 869 diaphragm actuated level control valves automatically control the water level in a tank or a reservoir by means of a float.

The float activates the modulating pilot that controls the main valve to keep the level at the predetermined setpoint.

Variant 869/2034-001
Connection: Flanged
Material: Ductile iron
DN: DN80 - DN450
PN: PN 10/16

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 coated with fusion bonded epoxy, 300 micron, GSK approved, RAL 5017, according to DIN 3476 and WRAS-DVGW/W270/UBA
  • All rubber parts approved for drinking water
  • All non-coated internal parts in stainless steel or bronze
  • A needle valve fitted between the upstream side and the control chamber allows for adjustment of the regulation reaction time
  • Closing the needle valve isolates the control chamber and fixes the position of the main valve allowing for service of the pilot valve
  • Integrated lifting holes 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		 L2
mm		 W1
mm		 W2
mm		 H3
mm		 Theoretical
weight/kg
869-0080-20-1340034 80 PN10/16 310 108 147 439 25
869-0100-20-1340034 100 PN10/16 350 117 157 455 30
869-0150-20-1340034 150 PN10/16 480 143 184 516 47
869-0200-20-0340034 200 PN10 600 203 209 606 97
869-0200-20-1340034 200 PN16 600 203 209 606 97
869-0250-20-0340034 250 PN10 730 254 234 710 158
869-0250-20-1340034 250 PN16 730 254 234 710 158
869-0300-20-1340034 300 PN16 850 277 259 794 222
869-0350-20-0340034 350 PN10 980 302 289 857 326
869-0350-20-1340034 350 PN16 980 302 289 857 326
869-0400-20-0340034 400 PN10 1100 355 355 971 507
869-0450-20-0340034 450 PN10 1200 398 398 1038 647
869-0450-20-1340034 450 PN16 1200 398 398 1038 647
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 disc 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. Float Stainless steel AISI 304
21. Needle valve Stainless steel AISI 304
22. 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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