TOP MATERIALS SERVICE

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PRESSURE SEAL VALVE

PRESSURE SEAL VALVE

  • GATE VALVE

    GATE VALVE

  • GLOBE VALVE

    GLOBE VALVE

  • Y-GLOBE VALVE

    Y-GLOBE VALVE

  • SWING CHECK VALVE

    SWING CHECK VALVE

PRODUCTION MATERIALS

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class/type 600 900 1500 2500 4500
GATE 2-60 2-48 2-48 2-48 2-30
GLOBE 2-36 2-36 2-30 2-24 2-20
SWING CHECK 2-42 2-42 2-42 2-42 2-30
TILTING CHECK 2-42 2-42 2-42 2-42 2-30
Y-GLOBE 2-36 2-36 2-30 2-24 2-20
ANGLE GLOBE 2-30 2-30 2-24 2-24 2-20
  • Carbon Steel : ASTM A216-WCB or Equivalent
  • Alloy Steel : ASTM A217-WC6,WC9,C5,C12,C12A, ASTM A182-F91 or Equivalent
  • Stainless Steel : ASTM A351-CF8,CF8M,CF3,CF3M, CN7M or Equivalent
  • Duplex Stainless Steel : ASTM A995-1A,2A,4A,5A or Equivalent
  • Special Alloy Steel : Inconel 625, Incoloy 825, Hastelloy C, Monel ASME SA designation material(e.g ASME SA217-WC6)
DESIGN

Pressure seal valve are intended for high pressure and high temperature appilications in all types of fluid, except where severe coking may occur.
A selection of design and material would give an excellent service in nuclear steam generating stations, industrial/chemical plants and thermal power plants.
The pressure seal valve provide the most efficient use for folw passage and sealing, and result in significant weight saving and ease and simple installation and maintenance. Manufacturing and quality assurance procedures include extra controls of dimensional and non-destructive examinations and tests on critical areas such as gasket sealing, weld ends, or stellite sealing surfaces.

CONSTRUCTION
  • BODY AND BONNET
  • BODY : Flow areas are designed for minimum turbulence and pressure drop.
  • BONNET : Ample stuffing box and stellite back seat are to guide accurately stem and back seat. When designing a PK valve, casting of body and bonnet shall be considered thoroughly as a quality requirement.
- BONNET TYPE

  • Type A

    GATE
    Class 600,900,1500 & 2500
    Size 4" & smaller
    GLOBE
    Class 600,900,1500
    Size 4" & smaller
    Class 2500
    Size 3" & smaller

  • Type B

    GATE
    Class 600,900,1500 & 2500
    Size 6" & larger
    GLOBE
    Class 600,900,1500
    Size 6" & larger
    Class 2500
    Size 4" & larger

  • Type C

    SWING CHECK
    Class 600,900,1500 & 2500
    Size 4" & smaller
    Class 2500
    Size 3" & smaller

  • Type D

    SWING CHECK
    Class 600,900,1500 & 2500
    Size 6" & larger
    Class 2500
    Size 4" & larger