Gearbox, stainless steel trim, DN80-600

AVK UK Gas and Water Sales


Gas & Water Sales

Needle valve PN40 for flow rate control and pressure reducing applications and regulation of water flow with clean water to 70°C. Face to face DN 80: EN558 ser. 48, DN 100-1000: EN558 ser. 15

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 for 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 872/00-003
Connection: Flanged
Material: Ductile Iron
PN: PN 40


  • 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 guides rails ensure very low vibration
  • Main seal in the no-flow zone at the valve outlet
  • Gaskets in thermoplastic PUR 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
  • Applications:
    • Flow control
    • Pressure regulation
    • Pump start
    • Reservoir inlets
    • Discharge
    • Turbine by-pass
    • Air regulation
    • Snowmaking


Installation, Operation & Maintenance


1. Shaft Stainless steel 1.4028
2. Screw Stainless steel A2-70
3. Key Stainless steel
4. Alu-bronze CC333G
5. O-ring EPDM
6. Bush Alu-bronze CC333G
7. Bush Alu-bronze CC333G
8. O-ring EPDM
9. Plug Plastic
10. Stainless steel 1.4028
11. O-ring EPDM
12. Body Ductile Iron GJS-500-7
13. Crank Ductile Iron GJS-500-7
14. Pin Stainless steel 1.4028
15. Split pin Stainless steel 1.4301
16. Bush Alu-bronze CC333G
17. Guide Brass CW617N
18. Piston tube Stainless steel 1.4301
19. Eye bolt Zinc coated steel
20. Gasket
21. O-ring EPDM
22. Gasket
23. Piston flange Stainless steel 1.4301
24. Stainless steel 1.4301
25. Bush Alu-bronze CC333G
26. Connection rod Stainless steel 1.4028
27. Pin Stainless steel 1.4028
28. Stainless steel 1.4301
29. Key Stainless steel
30. Stainless steel A2-70
31. Socket head bolt Stainless steel A2-70
32. Guide Brass CW617N
33. Stainless steel 1.4301
34. Bolt, hexagon head Stainless steel A2-70
35. Socket head bolt Stainless steel A2-70
36. Socket head bolt Stainless steel A2-70
37. Gearbox


  • Hydraulic test according to EN 1074-1 and 2 / EN 12266.
  • Hydraulic test according to EN 1074-1 and 5/ EN12266, seat: 1.1 x PN (in bar), body 1.5 x PN (in bar)

  • Approved according to SABESP Brazil


  • Designed according to EN 1074 - 5
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