AVK GATE VALVE FOR ACTUATION, PN 16, CTC

DN50-300 Clockwise to Close and Clockwise to Open

Resilient seated gate valve to BS EN 1074-2 for water and waste water. Temperature range: -10° C to +70° C. Max 10% solid matter. Insulation essential for temperatures of 0° and below.

The Series 21/78 is a resilient seat, wedge gate valve with an ISO mounting gland flange for the safe and cost effective fitting of gearboxes and actuators. Suitable for use with water and neutral liquids, to a maximum temperature of +70°C.

Variant 21/78-001
Connection: Flanged
Material: Ductile Iron
DN: DN200 - DN300
PN: PN 16

Features

  • ISO flange gland version for gearbox and actuator mounting.
  • Ductile iron wedge, fully vulcanized with EPDM rubber.
  • O-ring stem seals replaceable under pressure.
  • Corrosion resistant construction, ductile iron coated with WRAS approved epoxy coating Blue RAL 5017, to 250 microns min. Holiday free in accordance with WIS 04-52-01.
  • Body, bonnet and gland bolts sealed with hot melt.
  • Lifting bars - see safety note below.
  • Sizes DN50-150 have ISO mounting flange F10 only.
  • Sizes DN200-400 ISO mounting flange is double drilled F10/F14.
  • Embodied carbon data available upon request
  • Options:
  • DN350-400mm available upon request.
  • Electric actuation.
  • Bevel or spur gearboxes.
  • Alternative flange drilling.
  • Safety Note:
    • The valves now accommodate lifting bars for the safe handling of valves. These lifting bars are rated to the weight of the bare valve and stem cap (where fitted) only and should not be utilised if the valve is fitted with pipe, mechanical pipe joints, gearboxes, actuators or any other external fitment. AVK will not accept any responsibility for loss or damage if the lifting bars are not used in strict accordance with this guidance.

Reference nos. and dimensions:

Close Download package
AVK ref. no. DN
mm
Closing
Direction
H3
mm
H
mm
H1
mm
L
mm
D2
mm
W
mm
Torque
Nm
Theoretical
weight/kg
3D drawings Enquiry
21-200-78-0140069 200 CTC 678 508 462 292 23 340 130 55
21-200-78-1140069 200 CTO 678 508 462 292 23 340 130 55
21-250-78-0140069 250 CTC 776 576 531 330 23 400 120 84
21-250-78-1140069 250 CTO 776 576 531 330 23 400 120 84
21-300-78-0140069 300 CTC 880 652 607 356 23 455 100 122
21-300-78-1140069 300 CTO 880 652 607 356 23 455 100 122

Downloads

Datasheet (PDF)
Related Datasheets
Certificate(s)
Price list

Components

1. Body Ductile Iron GJS-500-7
2. Bonnet Ductile Iron GJS-500-7
3. ISO flange Ductile Iron GJS-500-7
4. Stem Stainless steel 1.4401
5. O-ring NBR
6. Bushing PA
7. Thrust collar DZR brass
8. O-ring NBR
9. Seal Hot melt glue
10. Bolt Zinc plated 8.8 steel
11. Key Stainless steel A4
12. Bolt Zinc plated 8.8 steel
13. O-ring NBR
14. Bonnet gasket EPDM
15. Wedge nut DZR brass
16. Wedge core Ductile iron
17. Wedge shoe PA
18. Wedge rubber EPDM
19. Coating Epoxy

Test/Approvals

  • Hydraulic test according to EN 1074-1 and 2 / EN 12266.
  • Seat: 1.1 x PN. Body: 1.5 x PN. 
  • Approved according to WRAS
  • Drinking Water Inspectorate Regulation 31 compliant

Standards

  • Designed according to BS EN 1074 -1 and 2
  • Face to face according to EN 558 Table 2 Basic Series 3
  • Standard flange drilling to EN1092 (ISO 7005-2), PN 16
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