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Webstone Isolator Pump Flange Valves

Webstone Isolator series valves are compatible with all major brand circulator pumps, including Taco (“00” series except 0012), Grundfos (UP/UPS 15 and 26, Alpha) and others. Each isolator valve comes with a set of bolts & nuts as well as additional T-style handle. For heating applications only.

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Product Description Part# / Brand Qty Unit Price
1/2" IPS Isolator Flange Valves (pair)
In Stock
40402-2
Webstone Valves
x1
$26.25 / each
x5
$127.50 / box
($25.50 / each)
3/4" IPS Isolator Flange Valves (pair)
In Stock
40403-2
Webstone Valves
 
x1
$28.95 / each
x5
$139.75 / box
($27.95 / each)
1" IPS Isolator Flange Valves (pair)
In Stock
40404-2
Webstone Valves
x1
$34.75 / each
x5
$168.75 / box
($33.75 / each)
1-1/4" IPS Isolator Flange Valves (pair)
In Stock
40405-2
Webstone Valves
x1
$40.95 / each
x5
$197.50 / box
($39.50 / each)
3/4" IPS Isolator Flange Valves with Drain (pair)
In Stock
40413-2
Webstone Valves
x1
$42.95 / each
x5
$206.25 / box
($41.25 / each)
1" IPS Isolator Flange Valves w/ Drain (pair)
In Stock
40414-2
Webstone Valves
x1
$52.95 / each
x5
$254.75 / box
($50.95 / each)
1-1/4" IPS Isolator Flange Valves with Drain (pair)
In Stock
40415-2
Webstone Valves
x1
$64.75 / each
x5
$313.75 / box
($62.75 / each)
3/4" IPS Isolator Valve w/ Rotating Flange
In Stock
41403
Webstone Valves
x1
$14.95 / each
x10
$145.00 / box
($14.50 / each)
1" IPS Isolator Valve w/ Rotating Flange
In Stock
41404
Webstone Valves
x1
$18.45 / each
x10
$176.50 / box
($17.65 / each)
1-1/4" IPS Isolator Valve w/ Rotating Flange
In Stock
41405
Webstone Valves
x1
$21.95 / each
x10
$209.50 / box
($20.95 / each)
1/2" Sweat Isolator Flange Valves (pair)
In Stock
50402-2
Webstone Valves
x1
$26.25 / each
x5
$127.50 / box
($25.50 / each)
3/4" Sweat Isolator Flange Valves (pair)
In Stock
50403-2
Webstone Valves
x1
$28.95 / each
x5
$139.75 / box
($27.95 / each)
1" Sweat Isolator Flange Valves (pair)
In Stock
50404-2
Webstone Valves
x1
$34.75 / each
x5
$168.75 / box
($33.75 / each)
1-1/4" Sweat Isolator Flange Valves (pair)
In Stock
50405-2
Webstone Valves
x1
$40.95 / each
x5
$197.50 / box
($39.50 / each)
3/4" Sweat Isolator Flange Valves with Drain (pair)
In Stock
50413-2
Webstone Valves
 
x1
$42.95 / each
x5
$206.25 / box
($41.25 / each)
1" Sweat Isolator Flange Valves with Drain (pair)
In Stock
50414-2
Webstone Valves
x1
$52.95 / each
x5
$254.75 / box
($50.95 / each)
1-1/4" Sweat Isolator Flange Valves with Drain (pair)
In Stock
50415-2
Webstone Valves
x1
$64.75 / each
x5
$313.75 / box
($62.75 / each)
3/4" Sweat Isolator Valve w/ Rotating Flange
In Stock
51403
Webstone Valves
x1
$14.95 / each
x10
$145.00 / box
($14.50 / each)
1" Sweat Isolator Valve w/ Rotating Flange
In Stock
51404
Webstone Valves
x1
$18.45 / each
x10
$176.50 / box
($17.65 / each)
1-1/4" Sweat Isolator Valve w/ Rotating Flange
In Stock
51405
Webstone Valves
x1
$21.95 / each
x10
$209.50 / box
($20.95 / each)
1" Sweat Isolator w/ Check Valve and Rotating Flange
Temporarily Out of Stock
53404
Webstone Valves
x1
$16.25 / each
x4
$62.00 / box
($15.50 / each)
1-1/4" Sweat Isolator w/ Check Valve and Rotating Flange
Temporarily Out of Stock
53405
Webstone Valves
x1
$19.95 / each
x4
$75.00 / box
($18.75 / each)
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About Webstone Isolator Series

Isolator flange valves offer fast, convenient and cost effective means of installing a circulator pump. These valves are manufactured from forged brass to last for a lifetime of the system. Webstone isolator valve eliminates unnecessary work and replaces traditional combination of components such as pump flanges, ball valves, pipe nipples, drain valves, etc.
4040 and 5040 Webstone models are standard isolator valves in threaded and sweat connections respectively. 4041 and 5041 models feature a full-flow drain valve. 4140 and 5140 models come with a rotating flange.

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