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AVK AIR RELIEF VALVE, RAPID FILL PREVENTION, EN1092, 16-40 BAR

Lynx 3F-RFP, red. bore for clean water, A2 Delta Seal GZ fasteners, 250µm blue RAL5005 EP coating

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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

Air relief valve for clean water and neutral liquids to max., 70°C. Used in applications as transmission lines, water distribution networks and for irrigation.

AVK air releaf valve, rapid fill prevention valve ensure a controled filling operation of the pipeline network by adjusting the air outflow capacity. Futther it has been designed to allow release of air pockets accumulated under working conditions, the entrance of large volumes of air during draining operations and pipeline bursts and the air dicharge with controlled speed, to prevent water hammer. The valve are generally used near pumps, where there are changes in slope ascending and at high points where the pipeline is subjected to water hammer.

Variant 861/12-001
Connection: No connection type specified
Material: Ductile iron
DN: DN50 - DN400

Features

  • The rapid filling preventer automatically adjust the outflow capacity thereby reducing the velocity of the incoming water column and minimizing the risk og wter hammer. Uncontrolled filling operations and transient events will inevitably generate the rapid closure of the air valves installed in the system with consequent damages. This type of valve will minimize the risk of this occurring.
  • The spray effect during closing and the risk of drowning are reduced compared to standard combination air valves.
  •  Single chamber body in ductile cast iron, PN 40 bar rated, is provided with intenal ribs for a consistant and accurate guiding of the mibile block.
  • Mobile block composed of a main float and upper disc, joined together by the air release system in AISI 316, and a additional anti surge obturator.
  • Nozzle and gasket holder are in AISI 316 and designed with gasket compression.
  • Cover in ductile iron and sreen in stainless steel prevents materials and insects entering the valve. Outlet for submerged applications are optional.
  • Working pressure: 0,1 - 40 bar

Downloads

Datasheet

Reference nos. and dimensions:

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AVK ref. no. DN
mm		 Flange
drilling		 Product
PN Class		 L
mm		 H3
mm		 Theoretical
weight/kg
861-0050-12-0111 50 PN16 PN16 165 236 7.0
861-0080-12-0111 80 PN16 PN16 210 305 11
861-0100-12-0111 100 PN16 PN16 235 303 14
861-0150-12-0111 150 PN16 PN16 305 337 23
861-0200-12-0111 200 PN16 PN16 375 515 55
861-0250-12-0111 250 PN16 PN16 450 625 101
861-0300-12-0111 300 PN16 PN16 485 735 127
861-0350-12-0111 350 PN16 PN16 580 850 251
861-0400-12-0111 400 PN16 PN16 660 995 304
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Components

1. Body Ductile iron EN GJS-500-7
2. Cap Ductile iron EN GJS-500-7
3. O-ring NBR rubber
4. O-ring NBR rubber
5. Seat Stainless steel 304
6. Disc Polyethylene
7. Nozzle Stainless steel 316
8. Float Polypropylene
9. Studs Stainless steel A2
10. Nuts Stainless steel A2
11. Spacer Stainless steel A2
12. Nuts Stainless steel A2
13. Washer Stainless steel A2
14. Disc Stainless steel 304
15. Screw Stainless steel A2
16. Drain valve Stainless steel 303
17. Screen Stainless steel 304
18. Stainless steel 304

Test/Approvals

  • Hydraulic test according to EN 1074-1 and 4 / EN 12266
  • Approved according to EN 1074-1 and 4

Standards

  • Designed according to AWWA C512, Designed according to EN 1074 - 4
  • Standard flange drilling to EN1092-2 (ISO 7005-2), PN 10/16/25/40
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