Donkin Series 555S Steel Gate Valves BS EN 12266, API 6D.

Class 300 Weld Ends

AVK UK Gas Sales Andy Hatton

Andy Hatton

National Sales Manager – Gas

Class 300 Weld End Gate Valve to API6D. Maximum Working Pressure: 50 Bar (725 PSIG). Temperature Range: -20°C to +60°C

The Series 555/163 Steel Softseal Valve is a double-faced, resilient seat, internal screw, clear bore wedge gate valve. Designed primarily for the isolation of high pressure natural gas, fitting into steel pipelines.

The Donkin 555 softseal gas valves are manufactured with the tried and trusted Donkin metallic wedge used for over 50 years on the gas networks. A true wedge design, the gate seals on both machined faces with an embedded nitrile seal in each face which sit completely outside the flow of gas with the valve open.
• The design gives effective and long term sealing on closure and the closing torques remain relatively low over the valve’s design life.
• The low closing / breaking torque means operators don’t risk over exertion / injury. Can be easily closed by a single person with standard equipment.
• Negates the need for manual handling risk assessment.

Variant 555/163-001
Connection: Steel Welding Ends
Material: Cast Steel
DN: DN50 - DN300
PN: PN 50
Closing direction: Clockwise to Close

Features

  • Soft seal, positive shut off
  • Direct welding into the pipeline
  • Clear bore for under pressure drilling operations
  • Metal to metal secondary seal
  • Maintenance free
  • Double ‘O’ Ring stem seal
  • Lifting lugs on all sizes
  • Suitable for above and below ground use
  • Embodied carbon data available upon request.
  • Options:
    • Drain and body vent tapping
    • Viton Seals
    • See 555/303 datasheet for Cast Steel Flanged Valves
    • Bespoke weld preparation to customer specification
    • Bare shaft end
  • Note:
    • Available with double weld (W/W) end connections. Face to face and end to end dimensions to API 6D-1982. Welding ends prepared to suit SCH.40 pipe as standard.

Downloads

Installation, Operation & Maintenance
Price list
Datasheet

Reference nos. and dimensions:

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Ref. no. DN
mm
H
mm
H3
mm
L
mm
Turns
to open
Theoretical
weight/kg
555-050-00-68333844 20
555-050-72-64331144 50 224 294 222 8.75 19
555-050-72-67338744 19
555-100-72-64331144 100 305 423 305 13 34
555-100-72-67338744 34
555-150-72-64331144 150 343 489 412 15.5 41
555-200-72-64331144 200 455 633 419 15 82
555-300-72-64331144 300 658 904 514 27 246
Enquiry
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Components

1. Body Cast Steel LCC
2. Bonnet Cast Steel LCC
3. Gland Cast Steel LCC
4. Wedge Ductile Iron GJS-400-18-LT
5. Spindle Stainless Steel 1.4005 (416)
6. O-ring seal NBR rubber
7. Fastenings Stainless Steel B8M, Cl.2

Test/Approvals

  • Tested according to EN12266-1

Standards

  • Designed according to Z245.15-09
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