Lead-Free* Isolation Flanges – NPT and Sweat Connections
The isolation flange is a combination of a full port isolation ball valve and a companion flange for circulators. The isolation flange allows easy service or replacement of the circulator without the need to drain the system.
Free-floating flanges eliminate the need to align flanges making the pump installation a snap. Includes capscrews and nuts.
Can be used with most circulators, including NRF/NBF/SSF wet rotors, Series PL’s, Series 100, HV, PR & LR and other manufacturers’ pumps.
Available Sizes: 3/4″, 1″ & 1-1/4″ (refer to dimension and weight table for details).
When closed, the isolation flanges isolate the circulator from the rest of the system so the system does not need to be drained when removing the circulator.
*Contains less that 0.25% lead (by weight) on wetted surfaces
- Maximum working pressure:
- Maximum operating temperature:
- Valve Body:
- Flange:
- Ball:
- Packing:
- Seat Ring:
- Stem:
- 150 psi (10 bar)
- 250°F (121°C)
- Brass
- Zinc Plated Steel
- Chrome Plated Brass
- Teflon
- Teflon
- Brass
SELECTION & SIZING TOOLS
Bell & Gossett offers several useful engineering tools for easy sizing of every area of a building. Simple to navigate software gives you accurate information and up-to-date documentation downloadable straight into your submittal package.
Some tools require a registered account: New User Registration | Existing User Password Help
| Selection Tools: | |
| ESP-DESIGN PLUS |  Bell & Gosset: Multi-Stage, Pressure Booster Packages, Wastewater, Vertical Turbines |
| ESP-PLUS | Bell & Gossett Pump Selection: Circulators, End Suction, Closed-Coupled, Inline, Double Suction |
| ESP-THERMAL | Bell & Gossett Gasket Plate & Frame and, Brazed Plate Heat Exchangers |
| ESP-PARTS | Parts Selection |
| Steam-2000 | Steam 200 Selection |
| Steam-1140 | Series 1140 Steam Service Regulators |
| Water-1140 | Series 1140 Water Service Regulators |
| Steam-Traps | Steam Traps Selection |
| CAD Drawings | CAD Drawings |
| Sizing Tools: | |
| System Syzer | System Sizing |
| System Syzer Psychrometry | System Sizing related to coil cooling |
| Steam-Pipe | Steam Pipe Sizing |
| Steam-Loss | Steam Loss Through Failed Trap |
| Flash-Steam | Flash Steam Sizing |
| Condensate-Pipe | Condensate Pipe Sizing |
Stand-Alone Software
For a Windows Applications (stand-alone) version of ESP-PLUS, please contact your local B&G Representative.
ESP Software Support:
For ESP Software Support, please contact ebusiness.support@xyleminc.com
Bell & Gossett
Bell & Gossett is a leading manufacturer of pumps, valves, heat exchangers, and accessories for plumbing, wastewater, and HVAC—including steam and heat transfer—applications.
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