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.
Suitable for transferring liquids of low viscosity, non-
inflammable and non-explosive, not containing solid
particles or fibers.
Water supply&drainage for high-rise buildings,
filtration and transfer at waterworks, pressure boosting
in main pipe.
Washing and cleaning systems, boiler feeding, cooling
water circulation, water treatment systems, auxiliary
system, support equipment.
Ultra-filtration systems，reverse-osmosis systems，distillation
systems, separators, swimming pools.
Agricultural irrigation: sprinkler irrigation, drip-feed irrigation.
Low viscosity, non-inflammable and non-explosive liquids
not containing solid particles or fibers. The liquids must not
chemically attack the pump materials. When pumping liquids
with a density or viscosity is higher than that of water, a motor
with a higher output power rating shall be used.
Liquid temperature：-20℃〜+ 120℃
Flow ranges: 0.7-240 m3/h
Liquid pH value：4-10
Max.ambient temperature：+ 40℃
Max. operation pressure: 33 bar
Altitude: up to 1000 m
IE 2 motor (IE 3 motor optional)
Standard voltage ：50Hz 1×220V / 3×380V
Max.ambient temperature：+ 40℃.Ambient temperature
above 40℃or installation at altitude of more than 1000 meters
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.
In such cases, it may be necessary to use a motor with a higher
output power rating.
Suitable for transferring liquids of low viscosity，non-inflammable and
non-explosive,not containing solid particles or fibers.
Water supply%drainage for high-rise buildings,filtration and transfer
at waterworks,pressure boosting in main pipe.
Washing and cleaning systems,boiler feeding,cooling water
circulation,water treatment systems,auxiliary system,support equipemt.
Ultra-filtration systems，reverse-osmosis systems.
Stainless steel welded shaft
Liquid temperature range：+ 4℃~+ 60℃
Cast iron water inlet and outlet with special anti-rust treatment
Liquid PH value：6.5-8.5
Max.operation pressure：15 bar
Altitude：up to 1000 m
Motor with copper winding
Insulation class: F
Type HL、HLZ pumps are designed to handle clear water or any other kinds of liquids with similar physical and chemical properties to water, so they are widely used for agricultural irrigation, transportation of circulation water in power plant, shipyard, municipal water supply and drainage and other fields. The temperature of the liquids pumped should be lower than 50℃.
Municipal engineering, hospital, farmland irrigation and drainage, conservancy project, Industrial water supply system, building, hotel, dock.
Scope of performance
◆ Capacity：440-8400 m3/h
◆ Head：3.4-20 m
◆ Inlet and outlet diameter of the pump in mm：300-800 mm
• 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)
vertical mixed flow pumps are energy-saving product with high efficiency, developed and designed by LEO according to national principles of energy saving and emission reduction to meet market demands. The series of products adopt advantages of both domestic and overseas similar products, and combine many years manufacturing experience of LEO, which keep products improving.
The series of product are suited to deliver clear water, rainwater, seawater and sewage, which application to power plant as circulating water pump, iron & steel plant and quay, water supply and drainage in city and irrigation project.
To transfer clean water with liquid temperature between
0°C and 40°C
Applicable in water supply and drainage for factories，
mines, municipal facilities as well as field irrigation, etc.
New unique design with ergonomic feature
Portable and compact pump frame
High quality motor with excellent performance and long
Impeller designed with high efficient hydraulic system
Low fuel consumption
Anti-rust cast iron impeller and diffuser
Max.suction：8 m / 120 s
Inlet/outlet: 25 mm/38 mm
Displacement: 42.7 cc
Rated speed: 7500 rpm
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%.