1. AVK India /
  2. Product finder

AIR RELIEF VALVE, DOUBLE ORIFICE, PN10/16

EN std. flange, SS 304L float/SS 304L guide/SS 304L seat, EPDM seal, A2 bolts, GZ coated A4 nuts, 300µm blue EP

AVK Valves India Pvt Ltd

Contact

AVK Valves India Pvt Ltd

117 & 118, 1st Floor, Road Number 3 Vijayanagar, EPIP Phase I, Whitefield, Bengaluru, Karnataka 560066, India

Air relief valve for drinking water, raw water, treated water and other neutral liquids to max. 70°C. Not for waste water.

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 851/4A-001
Connection: Flanged
Material: Ductile iron
DN: DN40 - 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
  • All iron parts with contact to the water are coated with drinking water approved, fusion bonded epoxy
  • The resilient seals are made of drinking water approved EPDM
  • All other internal parts are highly corrosion resistant AISI 304L stainless steel
  • 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
Reference no. Flange
drilling		 DN
mm		 D
mm		 D1
mm		 Dh
mm		 Ds
mm		 H3
mm		 A
mm		 W1
mm		 W6
mm		 No. of
bolts		 Theoretical
weight/kg
851-040-4A-112000 PN10/16 40 165 50 110 20.5 277 165 83 220 4 16
851-050-4A-112000 PN10/16 50 165 50 125 20.5 277 165 83 220 4 16
851-080-4A-112000 PN10/16 80 200 80 160 20.5 277 165 83 220 8 17
851-100-4A-112000 PN10/16 100 220 100 180 20.5 283 205 103 249 8 23
851-150-4A-112000 PN10/16 150 285 150 240 24.5 345 255 128 287 8 36
851-200-4A-012000 PN10 200 340 150 295 24.5 345 255 128 287 8 40
851-200-4A-112000 PN16 200 340 150 295 24.5 345 255 128 287 12 40
Enquiry
Scroll for more info

Components

1. Body Ductile iron GJS-500-7 (GGG-50)
2. Float, small orifice Stainless steel AISI 304L
3. Pin Stainless steel A2
4. O-ring EPDM rubber
5. Bonnet Ductile iron GJS-500-7 (GGG-50)
6. Gasket EPDM rubber
7. Orifice bracket Polyamide
8. Orifice cover Polyamide
9. Plug Plastic
10. Cowl Ductile iron GJS-500-7 (GGG-50)
11. Washer Stainless steel A2
12. Bolt Stainless steel A2
13. Bonnet Ductile iron GJS-500-7 (GGG-50)
14. Seat ring Stainless steel AISI 304L
15. Seal ring EPDM rubber
16. Guide ring Stainless steel AISI 304L
17. Float, large orifice Stainless steel AISI 304L
18. Float guide top Stainless steel AISI 304L
19. Float guide bottom Stainless steel AISI 304L
20. Nut Stainless steel A4
21. Bolt Stainless steel A2
22. Washer Stainless steel A2
23. Nut Stainless steel A4
24. Bolt Stainless steel A2

Test/Approvals

  • Hydraulic test according to EN 1074-1 / EN 12266 |
  • Hydraulic test: 1.5 x PN
  • Licensed by BIS acc. to IS 14845, CM/L 6300011673
  • Approved according to WRAS certificate 241102017, max. 50°C

Standards

  • EN 1074-4
  • Flange drilling to EN1092, PN10/16
0 Files In the package