Webstone Isolation Flanges

Webstone Isolation Flanges are designed for residential and commercial use with all 2 bolt flanged circulator pumps. The forged brass body and flange provide strength and versatility for any application where a pipe and flange meet. This approved Webstone valve features a solid hard chrome plated brass ball with reinforced Teflon seats and a blowout proof stem sealed with Teflon and an adjustable packing gland. Additional wing style 'T' handle included with mounting nuts and bolts. Webstone Isolation Flanges with Drain are designed for residential and commercial use with all 2 bolt flanged circulator pumps. The unitary construction of the brass body and flange provide strength and versatility for any application where a pipe and flange meet. This valve is the only choice to use in a closed system where a large port drain and fill valve is required.Additional wing style 'T' handle included with mounting nuts and bolts.

Manuals -


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  • 1/2" IPS Isolator Flange View Specs
    • SKU: 40402
    • Brand: Webstone

    $13.95 / each

    In Stock! (134 Available) Ships in 24-48 Hrs
  • 3/4" IPS Isolator Flange View Specs
    • SKU: 40403
    • Brand: Webstone

    $15.25 / each

    $146.50 / box
    10 x $14.65

    In Stock! (533 Available) Ships in 24-48 Hrs
  • 1" IPS Isolator Flange View Specs
    • SKU: 40404
    • Brand: Webstone

    $18.35 / each

    $176.50 / box
    10 x $17.65

    In Stock! (550 Available) Ships in 24-48 Hrs
  • 1-1/4" IPS Isolator Flange View Specs
    • SKU: 40405
    • Brand: Webstone

    $21.55 / each

    $205.50 / box
    10 x $20.55

    In Stock! (518 Available) Ships in 24-48 Hrs
  • 1-1/2" IPS Isolator Flange View Specs
    • SKU: 40406
    • Brand: Webstone

    $33.45 / each

    $323.50 / box
    10 x $32.35

    In Stock! (509 Available) Ships in 24-48 Hrs
  • 1" IPS Isolator - High Velocity View Specs
    • SKU: 40404HV
    • Brand: Webstone

    $19.95 / each

    $191.50 / box
    10 x $19.15

    In Stock! (474 Available) Ships in 24-48 Hrs
  • 1-1/4" IPS Isolator - High Velocity View Specs
    • SKU: 40405HV
    • Brand: Webstone

    $22.95 / each

    $109.75 / box
    5 x $21.95

    In Stock! (301 Available) Ships in 24-48 Hrs
  • 1-1/2" IPS Isolator - High Velocity (Pair of 2) View Specs
    • SKU: 40406HV
    • Brand: Webstone

    $66.95 / each

    In Stock! (504 Available) Ships in 24-48 Hrs
  • 2" IPS Isolator - High Velocity View Specs
    • SKU: 40407HV
    • Brand: Webstone

    $46.25 / each

    In Stock! (114 Available) Ships in 24-48 Hrs
  • 1/2" Sweat Isolator Flange View Specs
    • SKU: 50402
    • Brand: Webstone

    $13.95 / each

    $133.50 / box
    10 x $13.35

    In Stock! (409 Available) Ships in 24-48 Hrs
  • 3/4" Sweat Isolator Flange View Specs
    • SKU: 50403
    • Brand: Webstone

    $15.25 / each

    $146.50 / box
    10 x $14.65

    In Stock! (539 Available) Ships in 24-48 Hrs
  • 1" Sweat Isolator Flange View Specs
    • SKU: 50404
    • Brand: Webstone

    $18.35 / each

    $176.50 / box
    10 x $17.65

    In Stock! (616 Available) Ships in 24-48 Hrs
  • 1-1/4" Sweat Isolator Flange View Specs
    • SKU: 50405
    • Brand: Webstone

    $21.65 / each

    $207.50 / box
    10 x $20.75

    In Stock! (540 Available) Ships in 24-48 Hrs
  • 1-1/2" Sweat Isolator Flange View Specs
    • SKU: 50406
    • Brand: Webstone

    $33.45 / each

    $323.50 / box
    10 x $32.35

    In Stock! (517 Available) Ships in 24-48 Hrs
  • 1" Sweat Isolator Flange - High Velocity View Specs
    • SKU: 50404HV
    • Brand: Webstone

    $19.95 / each

    $191.50 / box
    10 x $19.15

    In Stock! (514 Available) Ships in 24-48 Hrs
  • 1-1/4" Sweat Isolator Flange - High Velocity View Specs
    • SKU: 50405HV
    • Brand: Webstone

    $23.55 / each

    In Stock! (500 Available) Ships in 24-48 Hrs
  • 1-1/2" Sweat Isolator Flange - High Velocity View Specs
    • SKU: 50406HV
    • Brand: Webstone

    $33.45 / each

    $323.50 / box
    10 x $32.35

    In Stock! (292 Available) Ships in 24-48 Hrs
  • 2" Sweat Isolator Flange - High Velocity View Specs
    • SKU: 50407HV
    • Brand: Webstone

    $46.95 / each

    In Stock! (4 Available) Ships in 24-48 Hrs
  • 3/4" IPS Isolator Flange with Drain (Pair) View Specs
    • SKU: 40413
    • Brand: Webstone

    $45.55 / each

    $218.75 / box
    5 x $43.75

    In Stock! (515 Available) Ships in 24-48 Hrs
  • 1" IPS Isolator Flange with Drain (Pair) View Specs
    • SKU: 40414
    • Brand: Webstone

    $55.95 / each

    $269.75 / box
    5 x $53.95

    In Stock! (501 Available) Ships in 24-48 Hrs