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Canalta

DBB Orifice Fitting

This brings the unmatched safety of double block and bleed functionality to the already exceptional quality and performance of the Canalta lineup of orifice fittings.

  • Protection from high pressure & toxic flow media
  • Accurate flow measurement
  • Highest quality manufacturing
  • Available as fitting only, retrofit or complete AGA-3 or ISO-5167 meter.
Take a closer look at the

DBB Orifice Fittings


    Operations & Maintenance Guide

    DBB Orifice Fitting

    Learn how to operate and maintain the double block and bleed orifice fitting from Canalta.

    • Orifice fittings supplied in Canada are built in accordance with the ABSA Quality Control Program.
    • Industry Canada Approval Number AF-0014.
    • In compliance with ASME 16.34 and ASME 16.5, ASTM specifications, AGA-3 Latest Edition and ISO-5167.
    • A216 WCB, A216 WCC, A352 LCC, A358 CF8M, A995 Gr4A, A995 Gr6A, Custom
    • AISI 4130 Carbon Steel, 316 or A351 CF8M Stainless Steel
    • Duplex
    • Super Duplex
    • 2" through 12", 150 through 2500 ANSI raised face flange
    • 14" through 16", 150 through 1500 ANSI raised face flange
    • 18" through 30", 150 through 600 ANSI raised face flange
    • 600, 900 and 1500 flanges also available in RTJ face flange
    • Flangeneck design (weldneck U/S, flange D/S)
    • Flange x Flange
    • Weldneck both end

    40, 60, 80, 100, 120, 160 and custom sizes

    • Seal bar - HNBR O-ring standard, gasket optional
    • Shafts - Teflon packing standard, HNBR O-ring optional
    • Inner valve - Grease seal standard, HNBR O-ring optional
    • Orifice plate - Type “K” 2000 Edition formed HNBR seal on a 316 SS retainer ring
    • Dual Ring HNBR O-rings standard on a 316 SS retainer ring assembly
    • Teflon Snap Seal two-piece virgin Teflon assembly

    In conformance with AGA-3 Latest Edition and ISO-5167

    In conformance with AGA-3 Latest Edition and ISO-5167

    • Two 1/2” NPT per side standard, two 1/2” NPT additional per side optional (TT)
    • 2” and 3” fitting sizes center bored to .375” inside diameter
    • 4” and larger sizes center bored to .500” inside diameter
    • Tolerance +/- 1/64”
    • 2” through 6” = 0.562”, 8” through 14” = 0.688”, 16” through 20” = 0.813”
    • 24” through 30” = 0.875"
    • Dual operation standard all sizes and pressure ratings

    Standard at -20° to 100° F, optional -40° to 1200° F

    Vertical or horizontal