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! (110 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! (563 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! (511 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! (510 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! (500 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! (517 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! (312 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! (502 Available) Ships in 24-48 Hrs
  • 2" IPS Isolator - High Velocity View Specs
    • SKU: 40407HV
    • Brand: Webstone

    $46.25 / each

    In Stock! (208 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! (369 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! (581 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! (537 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! (518 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! (500 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! (512 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! (502 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! (307 Available) Ships in 24-48 Hrs
  • 2" Sweat Isolator Flange - High Velocity View Specs
    • SKU: 50407HV
    • Brand: Webstone

    $46.95 / each

    Non-Stock Item Allow 2-3 Weeks to Ship Out
  • 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! (520 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! (505 Available) Ships in 24-48 Hrs