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Jackbolt Type

Jackbolt Type GENERAL INFORMATION

INSTRUCTION & FEATURES:

Jack Bolt type line blind has been used for a long time as it is applicable for a broad range of pressure pipelines with a lower cost. To change the blind plate position, an operator is required to unbolt it manually.

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    • REFINERY

    • Ethlylene Furnace
    • Decoking line
    • Steam & Vapor line
    • FCCU Fractionatorisolation (overhead & bottom line)
    • Catalyst service
    • Flare gas line
    • CHEMICAL PLANT

    • Reactor Blowdown
    • Chemical Cleaning isolation
    • Mixing lines
    • Regernation gas line
    • Filteration system
    • Loading station
    • Transfer line
    • OFFSHORE

    • FPSO
    • LNG ship
    • Shipboard lines
    • Vessel inlet
    • Inert Gas system
    • STEEL

    • Coke Oven Gas
    • Blast Furnace Gas
    • POWER PLANT

    • Coke Oven Gas

NOMINAL DIAMETER

NPS 1/2 (DN15) – NPS100 (DN2500)

TEMPERATURE RANGE

Standard Design : -20℃ ~ +200℃
High Temp. Design : +200℃ ~ +816℃
Cryogenic Design : -196℃

PRESSURE RATING

ASME Class 150 to Class 1500
Other presure classes up to ASME 2500
# available upon request

MATERIALS

BODY : Carbon Steel, Stainless Steel, Special Material (Duplex, Hastelloy, Monel, Inconel etc.)
BLIND : Stainless Steel, Special Material (Duplex, Hastelloy, Monel, Inconel etc.)
MOVING PARTS & SEALING SURFACE are Anti-corrosion Materials

FUNCTION

Gas & Liquid Perfect Isolation( Zero Leakage )

OPERATION METHOD

Manual Operation Electric, Pneumatic or Hydraulic Operation

1) Before turning the handwheel to change the blind plate position, internal pressure of the valve must be drained and be sure no pressure(Zero).
2) Unlock locking device for turn to handwheel
3) To change the blind plate position, turn the handwheel clockwise until indicator reaches to “Open” mark.
4) When indicator is on “open” mark, change the blind plate position to open or close.
5) After change the blind plate position, turn the handwheel counter-clockwise until indicator reaches to “Close” mark to tighten the seat.
6) Lock locking device for can’t use ahourized person

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