
What is it?
It combines a variable speed lead pump with one or two constant speed lag pumps.
It is a highly efficient and very economical pressure boosting package.
Use Tech 500 Controller with Danfoss VLT 6000 drive. Difference between lead/lag pump motors must be no larger than one size.
Typically 1531 vertical mounted pumps are used, but horizontal pumps can also be used.
How does it work?
The system can be enabled to run automatically from the keypad, or remotely via “dry contact”, or serial communication. Variable speed lead pump varies its speed to satisfy demand for most of the day and night, whereas the lag pumps stage on to meet the peak demand and then stage off as the demand decreases.
Why use it?
To boost pressure of incoming city water and of the available hot water to meet the design flow and head depending upon the building requirements all through the day and night.
Typical application
Suitable for cold and hot water pressure boosting applications for schools, prisons, large and small residential and commercial buildings, etc.
Selection Process
Selection of pumps, headers, and pressure reducing valves is done through ESP- PLUS. Quotes are generated using the pricing tool ESP-REP.
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 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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