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.
To transfer clean water with liquid temperature between 0℃and 40℃
Application in water supply and drainage for factories, mines,
municipal facilities as well as field irrigation, ect.
All new design with ergonomic feature
High lift series with LEO high efficient hydraulic system
Reliable 4-stroke gasoline engine with low fuel consumption
and high quality crankshaft
Portable，durable and compact pump frame
Durable sealing system with special mechanical seal
Optional outlet selection
Anti-rust cast iron impeller and diffuser
Max.power：3.8 HP / 5.4 HP
Displacement: 219 cc/306 cc
Rated speed: 3600 rpm
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
Can be used to transfer clean water or other liquids similar to
water in physical and chemical properties.
Suitable for industrial use and urban water supply, domestic water
supply, high rise buildings, long distance water transfer and
related auxiliary equipment etc.
Cast iron pump body and support under special anti-rust treatment.
AISI 304 shaft.
Max. liquid temperature: +40oC.
Max. suction: +8 m.
C&U bearing 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)
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
Liquid PH value:4-10
Max head: 36.5m
Max operation pressure: 16 bar
Altitude: up to 1000 m
Protection class: IP 55
IE 2 motor as standard.IE 3 motor is available on request
EN 1092 and DIN 2576 standard
Max. Ambient temperature:+40°C.Ambient temperature above40°C,or
installation at altitude of more than 1000 m above sea level, require the
use of an oversize motor. Because of low air density and poor cooling
effects, the motor output power P2 will be decreased. See the picture.
For example, when the pump is installed at altitude of more than 3500 m
above sea level，P2 will be decrease to 88%.when the ambient
temperature is 70°C，P2 will be decreased to 78%.
Type GS single stage double suction centrifugal pump have high efficiency and energy saving character. With wide Performance range, superior hydraulic performance and reasonable structure, the series of pumps have high efficiency and reliability, low cavitations and cost for maintenance.
GS series products are mainly used for deliver fresh water or other liquids similar to fresh water, the solid content is not more than 80mg/L, it also can deliver sewage, sea water and muddy water with little particle with adopting of anti-corrosion and anti-friction material. The products are widely applicable to supply & drainage system or cooling & circulating system for iron & steel, petrochemical, thermo power plant and mines industries, etc. and running water system for cities, circulating water for heating system, irrigation projects and various water conservation projects, fire systems, shipbuilding industry as well.
◆ Capacity：135~38000 m3/h
◆ Head：12~205 m
◆ Temperature：≤80℃，cooling structure will be adopted for bearing, the material of casing & cover is QT500-7≤150℃
◆ Speed：370~2970 r/min
◆ Suction diameter：150~1800 mm
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