The series of intelligent pressure boosting system BWS-HY is
developed based on PDI control technology, to control the pump
pressure within a certain range according to the water consumption
with features of complete functions, reliable quality, stable operation
and easy maintenance.
BWS, the abbreviation of Building Water System or Best Water
System, implies the LEO’s ambition to build up the image of best
quality product range for water supply system in the market.
BWS series includes WG Non-negative Water Supply System, wX
Water Non-negative Supply System, HY Constant Water Supply
System and ZY Boosting Water Supply System. Together with WQ
sewage pumps, XBD firefighting pumps, LPP in-line pumps and LEN
end suction pumps, we have full range to satisfy the applications of
secondary water supply, drainage, fire-fighting and HVAC.
The complete device is composed from a pump unit, a pressure tank,
a pressure sensor, PDI and accessories. If necessary, auxiliary pumps
or pressure tanks can be added in the device.
Can be used to transfer clean water or other liquids similar to water
in physical and chemical properties
Suitable for small living water supply，automatic water sprinkler system，
small air conditioner system or supporting equipment etc
With 2 L pressure tank for automatic operation
Special anti-rust treatment
Brass impeller AISI 304 shaft
Max.liquid temperature：+ 40℃
Max. suction: 9m
Can be used to transfer clean water or other liquids similar to water in
physical and chemical properties.
Suitable for industrial use andurban water supply, pressure boosting
for high buildings and fire fighting, garden irrigation, long-distance
water transfer, heating ventilation and air controlling, circulation and
pressure boosting for cold and hot water, and supporting equipment etc.
Cast iron pump body and support under special anti-rust treatment.
AISI 304 shaft.
Max. liquid temperature: +40oC.
Max. suction: +8 m.
Motor with copper winding.
Built-in thermal protector for single phase motor.
Insulation class: F.
Protection class: IPX4.
Max. ambient temperature: +40oC.
IE 2 motor (Three phase, power ≥ 0.75kw).
For water supply from wells or reservoirs
For domestic use,for civil and industrial applications
For garden use and irrigation
Maximum fluid temperature up to + 35℃
Maximum sand content：0.25%
Maximum immersion: 100m
Minimum well diameter: 6″
Motor and Pump
➀Direct start（1 cable）
➁Star-delta start (2 cable)
Equip with start control box or digital auto-control box
NEMA dimension standards
Curve tolerance according to ISO 9906
Options on request
Special mechanical seal
Other voltages or frequency 60Hz
Water supply systems
Heating systems for commercial buildings and district heating
Cooling plants for industrial processing and air-conditioning units
General transport for industrial processes
Fire fighting system
Pump design complies to BS EN 733/DIN 24255 standard
Conveying medium: Low viscosity, non-inflammable and non-explosive liquids not containing solid particles or fibers
Speed：1450/2900 rpm at 50 Hz，1 750/3500 rpm at 60 Hz
Flow range: 0.5-440 l/s
Head range: 2 152 m
Liquid pH value: 4-10
Max. operation pressure: 10 bar, 16 bar on request
• Application -Can be used to transfer clean water or other liquids similar to water in physical and chemical properties -Suitable for small living water supply, automatic water sprinkler system, small air conditioner system or supporting equipment etc. • Pump -Special anti-rust treatment for cast iron pump body and support -Anti-block system for impeller -Brass impeller AISI 304 shaft -Max. liquid temperature: +40c -Max. suction: +8m • Motor -C&U bearing -Motor with copper winding -Built-in thermal protector for single phase motor -Insulation class: F -Protection class: IPX4 -Max. ambient temperature: +40C -IE 2 motor (Three phase, power≥ 0.75kW, AP220 excluded)
Water supply: Pressure boosting for main pipes and high-rise buildings
Industrial pressure boosting：Water system，cleaning system，high pressure
washing system and firefighting system
Pressure boosting for pressure tank, sprinkling irrigation and trichling irrigation
ir conditioner, cooling system and industrial cleaning
Economic vertical multistage pumps
Applicable for a wide scope of different temperatures，flow rates and pressure ranges
Water inlet and outlet can be rotated for proper assembly in accordance with
Easy installation and maintenance
Advanced hydraulic model design，featuring stable operation and high efficiency
Cast iron water inlet and outlet with special anti-rust treatment
High-strength engineering plastic flow passage components
Reliable stainless steel welded shaft
Liquid temperature：+ 5℃~60℃
Maximum ambient temperature：+ 40℃
Maximum pressure: 15 bar
Altitude：up to 1000 m