1. Home

AVK DOUBLE ORIFICE AIR VALVE, PN10/16

EN std. flange, ABS float/ABS guide/ABS seat, EPDM seal, GZ coated A4 fasteners, 300µm blue EP

Glenfield Invicta Kilmarnock Office

Sales Enquiries

Please email all sales enquiries to the address below

Double orifice air relief and vent valve for clean water (not sewage or waste water) and other neutral liquids

AVK series 851 double orifice, triple action air valves are designed to allow air to rapidly either escape or enter the pipe system when filling or draining, as well as for automatic discharge of accumulated air during normal working conditions. The unique ‘Aerokinetic’ design allows air to rush out of the system at great speed without forcing the float upwards and closing it prematurely. This makes sure that the valve closes only after all air has left the system and water has entered the chamber.
All iron components are protected with fusion bonded epoxy coating in a GSK-approved process to ensure high durability. All other components are made of either WRAS approved polymer material or stainless steel to reduce corrosion risk even further. All seals are made of WRAS approved EPDM rubber featuring an excellent compression set and ability to regain its original shape.

Variant 851/20-003
Connection: Flanged
Material: Ductile Iron
DN: DN50 - DN200
PN: PN 16

Features

  • A clever float design prevents air rushing out of the system from prematurely closing the valve
  • Large air flow capacity
  • Ductile iron parts coated with GSK approved fusion bonded epoxy
  • Internal components are EPDM or ABS, WRAS approved
  • No moving parts are touching the internal coating
  • The complete product is approved for drinking water

Downloads

Datasheet
Certificate(s)

Reference nos. and dimensions:

Scroll for more info
Ref. no. DN
mm		 Flange
drillling		 A
mm		 D
mm		 D1
mm		 H3
mm		 W1
mm		 W6
mm		 Theoretical
weight/kg
851-050-20-122000 50 PN10/16 162 165 50 266 81 210 19
851-080-20-122000 80 PN10/16 222 200 80 345 111 237 32
851-100-20-122000 100 PN10/16 292 220 100 417 146 255 52
851-150-20-122000 150 PN10/16 292 285 150 417 146 255 55
851-200-20-022000 200 PN10 292 340 150 417 146 255 59
851-200-20-122000 200 PN16 292 340 150 417 146 255 59
Enquiry
Scroll for more info

Components

1. Body Ductile Iron GJS-500-7
2. Float guide bottom ABS
3. Float guide top ABS
4. Plug Stainless steel 316
5. Large orifice float ABS
6. Guide ring ABS
7. Seal ring EPDM
8. Seat ring ABS
9. Bonnet Ductile Iron GJS-500-7
10. Washer Stainless steel A4
11. Nut
12. Bolt Stainless steel A4
13. Cowl Ductile Iron GJS-500-7
14. O-ring EPDM
15. Orifice cover PA
16. Orifice bracket PA
17. Gasket EPDM
18. Grooved pin Stainless steel A4
19. Small orifice float ABS
20. Side chamber Ductile Iron GJS-500-7
21. Bolt Stainless steel A4

Test/Approvals

  • Hydraulic test according to EN 1074-1 / EN 12266

Standards

  • Designed according to EN 1074 - 4
  • Standard flange drilling to EN1092, PN 10/16
  • Wimes 8.9 compliant
  • Regulation 31 compliant
0 Files In the package