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Catridged seat butterfly valve

Cartridge Design Seat

Elastomer is supported by hard phenolic backing which eliminates seat shifting during installation.
Seat to disc seal is independent of flange support and capable of full rated dead end service.
Static seat design allows disc to sweep into seat for lower and more consistent torque.
Smaller mass of elastomer minimizes seat swell.

Standard Specifications

  • DESIGN

    ▪ API 609 Cat.A
    ▪ ISO 5752 Sr.20
    ▪ MSS SP 67

    FACE-TO-FACE

    ▪ API 609 Cat. A
    ▪ Wafer and Lugged

    FLANGE STANDARD

    ▪ ASME B 16.5
    ▪ BS 4504 / EN 1092-1
    ▪ JIS B2220
    ▪ Others on request

  • PRESSURE RATING

    ▪ 20 Bar
    ▪ 285 PSI

    NOMINAL DIAMETER

    ▪ 2” to 24”
    ▪ DN 50 to 600

    TESTING

    ▪ Shell : 31 Bar or 450 PSI
    ▪ Closure : 23 Bar or 325 PSI

Applicable Materials

Cast Iron A126 CL.B
Ductile Iron A395 Gr.60-40-18, A536 Gr.65-45-12
Austenitic Stainless Steel A351 CF8 / CF8M / CF3 / CF3M
Duplex Stainless Steel A890 4A / 5A / 6A, A995 4A / 5A / 6A
Special Alloy Inconel® 625(UNS N06625), 254SMO®(UNS S31254)
Monel® K400 / 500 (UNS N04400 / N05500)
Liner Nitrile Rubber with Phenolic Backing
EPDM Rubber with Phenolic Backing