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AVK PRESSURE REDUCING CONTROL VALVE, PN10/16

Reduced bore, SS-304/DI trim, SS-304 pilot, brass fittings/accs., EPDM/WRAS rubber, blue 300µm GSK coating, protected pos. ind.

Contact

AVK Saudi Valves

Jeddah Industrial City, Phase 4, Street no 45 P.O. Box 10830, 21443 Jeddah 24/7 Leakage Repair Service +966 55 909 9395

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

AVK series 879 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. Setting and adjustment on a control knob on the pilot.

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 879/000X99-001
Connection: Flanged
Material: Ductile iron
DN: DN65 - DN600
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, 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
  • 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
  • Fittings, pipes and accessories in Ni-plated brass
  • Optional visual position indicator with acrylic glass protection

Downloads

Datasheet
Related Datasheets
Tender Text
Certificate(s)
Installation, Operation & Maintenance

Reference nos. and dimensions:

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AVK ref. no. DN
mm		 Flange
drilling		 Pilot range
bar		 D1
mm		 D2
mm		 D3
mm		 Dh
mm		 W
mm		 H3
mm		 L
mm		 Theoretical
weight / kg		 Notes
879-0065-00-14400059999 65 PN16 2-15 118 145 185 19 265 380 290 20
879-0065-00-144000599A0 65 PN16 2-15 118 145 185 19 265 424 290 20 Incl. position indicator
879-0080-00-14400059999 80 PN16 2-15 132 160 200 19 280 405 310 23
879-0080-00-144000599A0 80 PN16 2-15 132 160 200 19 280 447 310 23 Incl. position indicator
879-0100-00-14400059999 100 PN16 2-15 156 180 220 19 291 420 350 28
879-0125-00-14400059999 125 PN16 2-15 184 210 250 19 320 440 400 32
879-0150-00-14400059999 150 PN16 2-15 211 240 285 23 350 480 480 45
879-0200-00-14400059999 200 PN16 2-15 266 295 340 23 405 600 600 95
879-0250-00-14400059999 250 PN16 2-15 319 355 405 28 470 720 730 156
879-0300-00-14400059999 300 PN16 2-15 370 410 460 28 525 795 850 220
879-0350-00-14400059999 350 PN16 2-15 429 470 520 28 585 870 980 323
879-0400-00-14400059999 400 PN16 2-15 480 525 580 31 645 995 1100 494
879-0450-00-14400059999 450 PN16 2-15 548 585 640 31 705 1060 1200 641
879-0500-00-14400059999 500 PN16 2-15 609 650 715 34 780 1245 1250 931
879-0600-00-14400059999 600 PN16 2-15 720 770 840 37 905 1355 1450 1268
Enquiry
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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 A2
7. Bolt Stainless steel A2
8. Diaphragm EPDM rubber
9. Spring Stainless steel 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 304
17. Seat Stainless steel 304
18. Stem Stainless steel 304
19. Pilot valve Stainless steel
20. Pressure gauge Stainless steel
21. Ball valve Nickel Brass
22. Needle valve Stainless steel
23. Y-strainer / Orifice Brass + SS 316

Test/Approvals

  • Hydraulic test: 1.5 x PN |
  • Tested according to EN12266-1.

Standards

  • Designed according to EN 1074 - 5
  • Face to face according to EN 558 Table 2 Basic Series 1
  • Flange drilling to EN1092-2 (ISO 7005-2), PN10/16
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