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VallandModel B21 -Double Expanding Gate Valve

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API 6D or API 6A Through Conduit Double Expanding Gate Valve, Bolted Bonnet. Rising Stem Outside Screw & Yoke. Bi-directional sealing (by seal on both sides). Metal-to-Metal Seated, Hardfaced with Tungsten Carbide Coating on Gates and Seats. Manual Operated with Handwheel or Gear, as applicable - Pneumatic, Hydraulic or Electric Actuated.

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  • Ends design:
    • Flanged (RF/RTJ) - ASME B16.5, ASME B16.47 or MSS SP-44
    • Flanged (6B/6BX) - API 6A
    • Compact (Norsok Standard L-005)
    • Butt-Weld (ASME B16.25) and/or Butt-Weld + Pipe
    • Hubbed according to client Clamp
    • Special client`s requirements
  • Body Design: Single piece
  • Bonnet Design: Bolted bonnet
  • Seat design:
    • Non floating (without soft gasket)
    • Metal to Metal (c/w hardfacing)
  • Valve operation:
    • Manual: Handwheel or Gearbox
    • Actuated: Pneumatic / Hydraulic / Electric / Electro-Hydraulic
  • Available Materials: CS, LTCS, SS, Duplex SS, Super Duplex SS, 6Mo, Inconel, Incoloy, Hastelloy, Monel, Titanium
  • NACE MR0175 according to client request.
  • Additional Features: Double Block and Bleed, Normal of Reverse acting, Graphite or V-Pack stem sealing arrangement
  • Testing and Certification:
    • Testing: Hydrostatic, High Pressure Gas, Pneumatic and Functional
    • API 598 - API 6A PSL3G, API 6A PR2 & Endurance
    • Fire testing: API 6FA, API 607, BS 6755 part 2, ISO 10497
    • Fugitive Emission Test: ISO 15848 - 1 & 2
    • SIL Certificate up to SIL 3
    • PED 2014/68/UE Mod.H
    • Hyperbaric Test for Subsea application