AVK NEEDLE VALVE, PN25

Gearbox, stainless steel trim, DN80-600

Contact

AVK International A/S

Bizonvej 1, Skovby, 8464 Galten, Denmark

Needle valve PN25 for flow rate control and pressure reducing applications and regulation of water flow with clean water to 70°C.

AVK series 872 needle valves are designed for regulation or throttling of water at high flow rates and pressure in piping systems for water supply. The focus is on durability and reliabilty with the sturdy valve housing made of either stainless steel or ductile iron coated with fusion bonded epoxy. It regulates with high precision and the high quality materials guarantee long service life with easy maintenance access.

Variant 872/00-002
Connection: Flanged
Material: Ductile Iron
DN: DN80 - DN600
PN: PN 25

Features

  • One-piece body construction
  • Symmetric flow path with annular flow cross section in any open position
  • Pressure balance in chamber inside for low operating torque
  • Internal body shape is optimized to give low head loss coefficient in fully open position
  • 4 - 6 guide rails ensure very low vibration
  • Main seal in the no-flow zone at the valve outlet
  • Gaskets in technopolymer (TPU) for high resistance to abrasion
  • All iron parts coated with min. 250 μm fusion bonded epoxy, blue RAL 5005
  • Easy access for maintenance
  • Double O-rings sealed drive shaft
  • Stainless steel internal parts and fasteners
  • Functions:
    • Flow control
    • Pressure regulation
    • Pump start
    • Reservoir inlets
    • Discharge
    • Turbine by-pass
    • Air regulation

Reference nos. and dimensions:

AVK ref. no. DN
mm
Flange
drilling
A
mm
B
mm
D
mm
H3
mm
L
mm
W
mm
Theoretical
weight / kg
Notes Enquiry
872-0080-00-709001001 80 PN25 125 80 95 200 260 305 19
872-0100-00-709001001 100 PN25 145 80 120 220 300 335 27
872-0150-00-709001001 150 PN25 175 80 135 285 350 400 49
872-0200-00-701001000 200 PN25 220 150 150 425 400 505 110
872-0250-00-701001000 250 PN25 260 165 165 475 450 580 155
872-0300-00-701001000 300 PN25 305 185 185 535 500 660 235
872-0350-00-701001000 350 PN25 350 205 205 595 550 770 325
872-0400-00-701001000 400 PN25 385 235 235 665 600 835 410
872-0450-00-701001000 450 PN25 420 240 240 745 650 900 485
872-0500-00-701001000 500 PN25 445 245 245 755 700 965 530
872-0600-00-701001000 600 PN25 505 280 280 925 800 1090 880

Downloads

Datasheet (PDF)

Components

1. Shaft Stainless steel 1.4028
2. Screw Stainless steel A2-70
3. Key Stainless steel 1.4401
4. Cap Alu-bronze CC333G
5. O-ring NBR rubber
6. Bush Alu-bronze CC333G
7. Bush Alu-bronze CC333G
8. O-ring NBR rubber
9. Plug Plastic
10. Cap Stainless steel 1.4028
11. O-ring NBR rubber
12. Body Ductile iron GJS-500-7 (GGG-50)
13. Crank Ductile iron GJS-500-7 (GGG-50)
14. Pin Stainless steel 1.4028
15. Split pin Stainless steel 1.4401
16. Bush Alu-bronze CC333G
17. Guide Brass CW617N
18. Piston tube Stainless steel 1.4301
19. Eye bolt Steel, zinc coated
20. Gasket PUR
21. O-ring NBR rubber
22. Gasket
23. Flange Stainless steel 1.4301
24. Piston flange Stainless steel 1.4301
25. Plate Stainless steel 1.4301
26. Bush Alu-bronze CC333G
27. Connection rod Stainless steel 1.4028
28. Pin Stainless steel 1.4028
29. Seal ring Stainless steel 1.4301
30. Key Stainless steel 1.4401
31. Set screw Stainless steel A2-70
32. Bolt, socket head Stainless steel A2-70
33. Guide Brass CW617N
34. Ring Stainless steel 1.4301
35. Bolt, hexagon head Stainless steel A2-70
36. Bolt, socket head Stainless steel A2-70
37. Bolt, socket head Stainless steel A2-70
38. Gearbox

Test/Approvals

  • Hydraulic test according to EN 1074-1 and 5/ EN12266, seat: 1.1 x PN (in bar), body 1.5 x PN (in bar)

Standards

  • Designed according to EN 1074 - 5
  • Face-to-face dimension according to EN 558 Table 2 Basic Series 15
  • Standard flange drilling to EN1092-2 (ISO 7005-2), PN25
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