Xylem GS Fixed Speed Booster Sets

The Lowara GS series booster sets are fully automatic booster sets for water supply. They are equipped with 2-3 fixed speed pumps (where one can be a jockey pump), control panel, SM30 controller and pressure transmitters, all mounted on a frame for easy installation. The SM30 is easy to set and can be connected to a BMS system via Modbus.

Variable speed sets equipped with Hydrovar® frequency converter and 2-3-4 multistage vertical pumps

  • Delivery: up to 630 m³/h
  • Head: up to 160 m
  • Power: up to 55 kW
  • Maximum operating pressure: 16 bar

The GS range of fixed speed booster sets includes models with 2 to 3 electric service pumps, and an additional jockey pump able to adapt to specific requirements within different applications. The start and stop of the pumps is based on the pressure values set on a pressure transducer, in order to deliver the water required. One pressure transducer is connected on the delivery side of the set.

A second one is connected but only as a reserve device. With the cyclic changeover function, duty assignment is rotated to ensure both pumps remain active and with even running hours, so wear is uniform and the use factor is reduced for longer pump life. This system also ensures continuity of operation, in case one of the pumps needs maintenance. The electric pumps used in the GSD range are FHE and SHE series and SV series vertical multistage pumps.Pumps are controlled by an electric control panel with a new electronic card with display on the front door. The electronic card and panel can also be used for waste water applications with up to 3 pumps installed


  • Water supply and waste water applications
  • Multilanguage menu with 8 languages
  • Start and stop of the pumps on level or pressure value (contact or analogical signal)
  • Pumps rotation on running time or pump start
  • Modbus serial interface
  • Digital inputs and outputs
  • Analogical inputs and outputs
  • Autotest by time


These kinds of booster sets are used for water supply applications, in the following facilities.

  • Commercial building
  • Schools
  • Offices
  • Hotels
  • Public and private healthcare systems
  • Industrial premises
  • Public buildings
  • Theatres
  • Camping

Product applications and characteristics

  • Booster sets components and material.
  • Booster sets are manufactured in a compact solution with all components assembled in the factory.

Booster sets have the following components:

  • Base in iron painted “Ω” shape
  • Vertical multistage pumps or horizontal pumps SV and FH, SH series
  • Control panel with electronic card SM30
  • Isolating valve nickel-brass or cast iron material
  • Check valve in suction side or delivery side according to customer requirements
  • Pressure transducers in AISI 304 one in run and one in stand-by
  • Pressure gauge
  • Delivery manifold in AISI 304
  • Suction manifold in AISI 304

All the sets are tested in the factory and they are manufactured according to:

  • Machinery Directive: 2006/42/CE
  • Low Voltage Directive: 2006/95/CE
  • Electromagnetic Compatibility Directive: 2004/108/CE

Featured Booster Set Learn more

Xylem Cat 5 Booster Sets

Quick Specs:

Lowara cat-5 packaged break tank booster sets are designed to be both compact and cost effective.

  • Single or twin pump (Single pump only on 55lt and 91lt tank sets)
  • Variable or fi xed speed
  • e-SV vertical multistage pumps
  • e-HM horizontal pumps
  • Tank nominal volumes available: 55lt, 91lt, 250lt, 450lt, 680lt and 1000lt

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