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AVK PRESS. RED./PRESS. SUST. CONTROL VALVE, PN10/16

Full bore, AISI304/DI trim, AISI304 pilot, brass fittings/accs., EPDM/WRAS rubber, protected pos. ind.

Control valve, press. red./press. sust., for drinking water or other neutral liquids to max. 70°C

AVK series 879/0X1X diaphragm actuated control valves combine a pressure reducing control mode (PRV) with an upstream pressure sustaining control mode (PSV) that automatically maintains a constant outlet pressure regardless of flow demand or changes in inlet pressure, however, only as long as the inlet pressure does not drop below the setpoint of the PSV.

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 879/100X1X-001
Connection: Flanged
Material: Ductile iron
DN: DN50 - DN600
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		 W
mm		 H3
mm		 L
mm		 Theoretical
weight/kg		 Notes
879-0050-10-14400051199 50 PN16 2-15 99 125 165 19 295 405 230 19
879-0050-10-144000511A0 50 PN16 2-15 99 125 165 19 295 407 230 19 Incl. position indicator
879-0065-10-14400051199 65 PN16 2-15 118 145 185 19 325 435 290 24
879-0065-10-144000511A0 65 PN16 2-15 118 145 185 19 325 436 290 24 Incl. position indicator
879-0080-10-14400051199 80 PN16 2-15 132 160 200 19 345 450 310 28
879-0080-10-144000511A0 80 PN16 2-15 132 160 200 19 345 451 310 28 Incl. position indicator
879-0100-10-14400051199 100 PN16 2-15 156 180 220 19 390 470 350 37
879-0100-10-144000511A0 100 PN16 2-15 156 180 220 19 390 474 350 37 Incl. position indicator
879-0150-10-14400051199 150 PN16 2-15 211 240 285 23 485 605 480 83
879-0150-10-144000511A0 150 PN16 2-15 211 240 285 23 485 607 480 83 Incl. position indicator
879-0200-10-04400051199 200 PN10 2-15 266 295 340 23 545 720 600 139
879-0200-10-044000511A0 200 PN10 2-15 266 295 340 23 545 774 600 139 Incl. position indicator
879-0200-10-14400051199 200 PN16 2-15 266 295 340 23 545 720 600 139
879-0200-10-144000511A0 200 PN16 2-15 266 295 340 23 545 774 600 139 Incl. position indicator
879-0300-10-04400051199 300 PN10 2-15 370 400 445 23 615 830 850 257
879-0300-10-044000511A0 300 PN10 2-15 370 400 445 23 615 923 850 257 Incl. position indicator
879-0300-10-14400051199 300 PN16 2-15 370 410 460 28 615 830 850 257
879-0300-10-144000511A0 300 PN16 2-15 370 410 460 28 615 923 850 257 Incl. position indicator
879-0350-10-04400051199 350 PN10 2-15 429 460 505 23 720 950 980 458
879-0350-10-044000511A0 350 PN10 2-15 429 460 505 23 720 1045 980 458 Incl. position indicator
879-0350-10-14400051199 350 PN16 2-15 429 470 520 28 720 950 980 458
879-0350-10-144000511A0 350 PN16 2-15 429 470 520 28 720 1045 980 458 Incl. position indicator
879-0400-10-04400051199 400 PN10 2-15 480 515 565 28 790 1010 1100 544
879-0400-10-044000511A0 400 PN10 2-15 480 515 565 28 790 1183 1100 544 Incl. position indicator
879-0400-10-14400051199 400 PN16 2-15 480 525 580 31 790 1010 1100 544
879-0400-10-144000511A0 400 PN16 2-15 480 525 580 31 790 1183 1100 544 Incl. position indicator
879-0450-10-04400051199 450 PN10 2-15 530 565 615 28 940 1190 1200 870
879-0450-10-044000511A0 450 PN10 2-15 530 565 615 28 940 1361 1200 870 Incl. position indicator
879-0450-10-14400051199 450 PN16 2-15 548 585 640 31 940 1190 1200 870
879-0450-10-144000511A0 450 PN16 2-15 548 585 640 31 940 1361 1200 870 Incl. position indicator
879-0500-10-04400051199 500 PN10 2-15 582 620 670 28 1030 1265 1250 1115
879-0500-10-044000511A0 500 PN10 2-15 582 620 670 28 1030 1435 1250 1115 Incl. position indicator
879-0500-10-14400051199 500 PN16 2-15 609 650 715 34 1030 1265 1250 1115
879-0500-10-144000511A0 500 PN16 2-15 609 650 715 34 1030 1435 1250 1115 Incl. position indicator
879-0600-10-04400051199 600 PN10 2-15 682 725 780 31 1200 1410 1450 1674
879-0600-10-044000511A0 600 PN10 2-15 682 725 780 31 1200 1584 1450 1674 Incl. position indicator
879-0600-10-14400051199 600 PN16 2-15 720 770 840 37 1200 1410 1450 1674
879-0600-10-144000511A0 600 PN16 2-15 720 770 840 37 1200 1584 1450 1674 Incl. position indicator
Enquiry
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Components

1. Body Ductile iron GJS-500-7 (GGG-50)
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. Bolts 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. Pilot valve Stainless steel

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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