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Quick Opening Closure (QOC)

Quick Opening Closures can be used to provide rapid and frequent access to any pressure vessel: Pig Traps, filters, coalescers, strainers, hydro cyclones...

Opening and closing safely by one man within one minute without effort

WOCC - Clamp type
  • Pressure Range from 150# up to 600#
  • Size range from 04'' up to 20'' and higher
  • Applicable for horizontal and vertical pressure vessels
  • Clamp segment to fixe the plug in the hub
  • Handwheel rotation actuates the clamp
  • The clamps are locked by the interlock system paddle in the closed position
  • 'U' shape self energized, one-piece molded gasket, provides an optimal sealing and
    full tightness on full pressure range
  • The range is designed according to ASME VIII Div1 UG 35 & Div2 and majority of
    the client specification

NLS2K0 - Flexible Segment type
  • Pressure Range from 150# up to 900#
  • Size range from 20'' up to 60''
  • Applicable for horizontal and vertical pressure vessels
  • Flexible ring segment to fixe the plug in the hub
  • Quarter turn rotation of the lever actuates the segment
  • The lever is locked by the interlock system in the closed position
  • 'U' shape self energized, one -piece molded gasket, provides an optimal sealing and
    full tightness at low and high pressure
  • The range is designed according to ASME VIII Div1 UG 35 & Div2 and majority of the
    client specification

NLS2K3 - Expandable Segment type
  • Pressure Range from 150# up to 2500#
  • Size range from 08'' up to 80'' and higher
  • Applicable for horizontal and vertical pressure vessels
  • Expandable segment to fixe the plug in the hub
  • Quarter turn rotation of the lever actuates the segment
  • The lever is locked by the interlock system in the closed position
  • 'U' shape self energized, one-piece moulded gasket, provides an optimal sealing and
    full tightness at low and high pressure
  • The range is designed according to ASME VIII Div1 UG 35 & Div2 and majority of the
    client specification

Technical specifications

Materials of construction



Websites of the Group

Phocéenne SAS, Division Piping Technologies - Siège social / Registered office: 10 Boulevard de Pythagore, domaine de Couperigne, 13127 Vitrolles, France -
Capital social/ Paid capital € 50,000 - Chambre du Commerce / Chamber of Commerce RCS Marseille B 877951673 - TVA/ VAT No. FR63877951673
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