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AVK CONTROL VALVE, DUAL PRESSURE PN10/16

Reduced bore, AISI304/DI trim, AISI304 pilot, brass fittings/accs., EPDM/WRAS rubber, prg. solenoid, PI

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

AVK series 879/0X0X diaphragm actuated pressure reducing control valves (PRV) automatically maintain a constant outlet pressure regardless of flow demand or changes in inlet pressure.

Two independent pilots can be set to different setpoints that can be selected via remotely controlled solenoid valves.

Replaceable springs inside the pilots makes it possible to operate in different pressure ranges and still keep the high precision. Setting and adjustment on control knobs on the pilots.

Both full bore and reduced bore versions are available with the full bore having full capacity and the reduced bore having increased precision and smooth regulation at low flow rates.

Variant 879/000X0X-001
Connection: Flanged
Material: Ductile iron
DN: DN65 - DN300
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 coated with fusion bonded epoxy, 300µm, GSK approved, RAL 5017, according to DIN 3476 and WRAS-DVGW/W270/UBA
  • All rubber parts approved for drinking water
  • All non-coated internals made of stainless steel or bronze
  • Seat and pilot in stainless steel AISI 304
  • Fittings, pipes and accessories in Ni-plated brass
  • 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

Downloads

Datasheet
Related Datasheets
Tender Text
Certificate(s)
Installation, operation and maintenance manuals

Reference nos. and dimensions:

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Reference no. DN
mm		 Flange
drilling		 Press. Range
bar		 D1
mm		 D2
mm		 D3
mm		 Dh
mm		 H3
mm		 L
mm		 W
mm		 Theoretical
weight/kg		 Notes
879-0065-00-144000505E4 65 PN16 2-15 118 145 185 19 430 290 410 21
879-0065-00-144000505E7 65 PN16 2-15 118 145 185 19 430 290 410 21 Incl. position indicator
879-0080-00-144000505E4 80 PN16 2-15 132 160 200 19 450 310 425 25
879-0080-00-144000505E7 80 PN16 2-15 132 160 200 19 450 310 425 25 Incl. position indicator
879-0100-00-144000505E4 100 PN16 2-15 156 180 220 19 465 350 440 30
879-0100-00-144000505E7 100 PN16 2-15 156 180 220 19 465 350 440 28 Incl. position indicator
879-0150-00-144000505E4 150 PN16 2-15 211 240 285 23 525 480 450 47
879-0150-00-144000505E7 150 PN16 2-15 211 240 285 23 525 480 450 47 Incl. position indicator
879-0200-00-044000505E4 200 PN10 2-15 266 295 340 23 615 600 540 97
879-0200-00-044000505E7 200 PN10 2-15 266 295 340 23 688 600 540 97 Incl. position indicator
879-0200-00-144000505E4 200 PN16 2-15 266 295 340 23 615 600 540 97
879-0200-00-144000505E7 200 PN16 2-15 266 295 340 23 688 600 540 97 Incl. position indicator
879-0250-00-044000505E4 250 PN10 2-15 319 350 395 23 720 730 595 158
879-0250-00-044000505E7 250 PN10 2-15 319 350 395 23 806 730 595 158 Incl. position indicator
879-0250-00-144000505E4 250 PN16 2-15 319 355 405 28 720 730 595 158
879-0250-00-144000505E7 250 PN16 2-15 319 355 405 28 806 730 595 158 Incl. position indicator
879-0300-00-044000505E4 300 PN10 2-15 370 400 445 23 795 850 655 222
879-0300-00-044000505E7 300 PN10 2-15 370 400 445 23 881 850 655 222 Incl. position indicator
879-0300-00-144000505E4 300 PN16 2-15 370 410 460 28 795 850 655 222
879-0300-00-144000505E7 300 PN16 2-15 370 410 460 28 881 850 655 222 Incl. position indicator
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Components

1. Body Ductile iron EN-GJS-500-7
2. O-ring EPDM rubber
3. O-ring EPDM rubber
4. Plug sealing EPDM rubber
5. Hex nut Stainless steel A2
6. Washer Stainless steel AISI 304
7. Bolt Stainless steel A2
8. Diaphragm EPDM rubber
9. Spring Stainless steel AISI 304
10. Flat seal EPDM rubber
11. Flat seal EPDM rubber
12. Cover Ductile iron EN-GJS-500-7
13. Hex nut Stainless steel A2
14. Diaphragm support Ductile iron EN-GJS-500-7
15. Obturator Ductile iron EN-GJS-500-7
16. Regulating plug Stainless steel AISI 304
17. Seat Stainless steel AISI 304
18. Stem Stainless steel AISI 304
19. Pilot valve Stainless steel
20. Pressure gauge Stainless steel
21. Ball valve Brass, Ni-plated
22. Needle valve Stainless steel
23. Y-strainer / Orifice Brass + SS 316
24. Solenoid valve Nylon
25. Auxiliary valve Stainless steel
26. Timer

Test/Approvals

  • Tested according to EN 12266-1 |
  • Hydraulic test: 1.5 x PN
  • Approved according to ACS-France
  • Approved according to WRAS Certificate 2010005, max 50°C

Standards

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