Webstone Isolator Uni-Flange Ball Valves connect to circulator pumps at one end and the system piping at the other, isolating the pump for replacement or system service. As a result, virtually no air will make its way into the system upon replacement.
The unique 360° flange allows for positioning at any degree of rotation necessary for installation. In addition, the innovative 3-way main ball can easily be purged from either side of the pump. The Isolator combines multiple components into a single forged brass body, saving time, labor, and space.
Designed for use with water, oil, or glycol mix in residential or commercial plumbing and heating systems, all Webstone Isolator valves feature a limited lifetime warranty.
Webstone Isolator Valves Features
Save up to an hour of installation time and eliminate up to seven leak paths.
Multi-Function Drain
A multi-function hi-flow hose drain purges before or after the pump.
Snug-Fit Rotating Flange
The available rotating flange provides greater control during installation.
Webstone Isolator Valve Models
Models with Rotating Flange
Webstone H-x140
Isolator valve with rotating flange, full port forged brass uni-flange ball valve, detachable rotating flange, adjustable packing gland, nuts, and bolts. This valve efficiently isolates the pump for replacement, prevents electrolysis, and eliminates galvanic corrosion. In addition, the valve's rotating flange is secured by a snug-fit snap ring, providing greater control over installation positioning. The flange features a conical inlet to minimize turbulence. The valve fits virtually any standard circulator pump, while its integral spring check saves labor, space, and leak paths.
- Saves 18 minutes
- Replaces three components
- Eliminates two leak paths
- Adjustable packing gland
- Available in lead-free
- Available in FIP x FLG, SWT x FLG, PRS x FLG, PEX x FLG
- Certified to NSF/ANSI 61 & 372
- NSF/ANSI 14
Webstone H-x141
Isolator valve with rotating flange, multi-function drain, full port forged brass uni-flange ball valve, detachable rotating flange, multi-function high-flow hose drain, adjustable packing gland, nuts, and bolts. Its multi-function drain makes the Isolator the only valve that drains from either side of the pump.
- Saves 63 minutes
- Replaces eight components
- Eliminates seven leak paths
- Adjustable packing gland
- Available in lead-free
- Patented technology
- Available in FIP x FLG, SWT x FLG, PRS x FLG, PEX x FLG
- Certified to NSF/ANSI 61 & 372
- NSF/ANSI 14
Webstone H-x141KIT
The same as H-x141, but the kit contains:
- One Isolator and one Isolator with drain
- Two full-faced flange gaskets
- A bonus wing-style "T" handle
- Two sets of nuts and bolts
Models with Fixed Flange
Webstone H-x040
Isolator uni-flange ball valve with full port forged brass ball valve, adjustable packing gland, nuts, and bolts. This valve isolates the pump for replacement, prevents electrolysis, and eliminates galvanic corrosion. The flange features a conical inlet to minimize turbulence. The valve fits virtually any standard circulator pump, while its integral spring check saves labor, space, and leak paths.
- Saves 18 minutes
- Replaces three components
- Eliminates two leak paths
- Adjustable packing gland
- Certified to NSF/ANSI 61
Webstone H-x041
Isolator with high-flow hose drain, full port forged brass uni-flange ball valve, nuts, and bolts. Its multi-function drain makes the Isolator the only valve that drains from either side of the pump.
- Saves 63 minutes
- Replaces eight components
- Eliminates seven leak paths
- Adjustable packing gland
- Certified to NSF/ANSI 61
- Available in FIP x FLG, SWT x FLG
Webstone H-x041KIT
The same as H-x041, but the kit contains:
- One Isolator and one Isolator with drain
- Two full-faced flange gaskets
- A bonus wing-style "T" handle
- Two sets of nuts and bolts
Models with Round Flange
Webstone H-x140-RF
Isolator valve with round flange, full port forged brass uni-flange ball valve, detachable rotating flange, adjustable packing gland, nuts, and bolts that fits high-efficiency variable speed pumps. This valve efficiently isolates the pump for replacement, prevents electrolysis, and eliminates galvanic corrosion. In addition, the valve's rotating flange is secured by a snug-fit snap ring, providing greater control over installation positioning. The flange features a conical inlet to minimize turbulence. The valve fits virtually any standard circulator pump, while its integral spring check saves labor, space, and leak paths.
- Saves 18 minutes
- Replaces three components
- Eliminates two leak paths
- Adjustable packing gland
- Available in lead-free
- Available in FIP x FLG, SWT x FLG, PRS x FLG
Webstone H-x141-RF
Isolator valve with round flange, multi-function drain, full port forged brass uni-flange ball valve, detachable rotating flange, multi-function high-flow hose drain, adjustable packing gland, nuts, and bolts. Its multi-function drain makes the Isolator the only valve that drains from either side of the pump.
- Fits high-efficiency variable speed pumps
- Saves 63 minutes
- Replaces eight components
- Eliminates seven leak paths
- Adjustable packing gland
- Patented technology
- Available in FIP x FLG, SWT x FLG, PRS x FLG
Isolator Select
Webstone H-8142
Isolator select brass uni-flange ball valve with four-way selectable flow path, plugged FNPT ports, adjustable packing glands, nuts, bolts, and flange gasket.
- Quickly fill, purge, sample, or add a pressure gauge right at the pump
- Ideal for geothermal applications
- Available in FIP x PRS x FLG
Shop All Webstone Isolator Valves
Read More About Webstone Valves