CHME Horizontal Intelligent Constant Pressure Variable Frequency Pump



  • CNP Actively Participating in the 22nd Shandong International Water Exhibition

  • CNP Donated Medical Mask for Overseas Customers

  • ISO /TC 23/SC 18 SECRETARIAT visited CNP

  • CNP attended Aquatherm Moscow 2019

  • 2018 CNP overseas customers conference



CHME series horizontal intelligent constant pressure frequency conversion pump adopts the technology of frequency conversion speed regulation and automatic control, together with the high-efficiency and energy-saving CHM non-self-priming light horizontal multistage centrifugal pump.

The whole machine is mainly composed of CHM pump, controller, sensor, pressure tank, check valve and axial seismic pressure gauge.

It has the characteristics of stable performance, high efficiency and energy saving, automatic intelligent control, low noise, corrosion resistance, compact structure, beautiful appearance, small size, light weight and so on.



Fully automatic operation:  It can start and stop automatically according to demand, and can automatically adjust speed according to the water amount to ensure constant pressure and energy saving.

Clean and sanitary:  The flow parts are all made of stainless steel to ensure that the water quality will not be contaminated again.

Constant pressure:  Keep constant pipeline pressure through Differential Compensation Principle of pressure tank.

Electrical protection: The controller has protection against overcurrent, overload, and lack-phase. When the controller detects an electrical fault, an inverter fault signal will appear on the display screen and the pump will be automatically shut down to protect it.

Self-set pressure: The pressure can be set by the control panel within the pump performance range.

High efficiency and energy saving: When the user's water consumption is reduced, the controller drives the motor to run slowly, thereby reducing the actual output power of the pump. Compared with the traditional power frequency motor (constant speed), the power consumption of the pump is greatly reduced. This enables users to save power.



TEFC secondary motor

Protection class: IP55

Insulation class: F


Protection class: IP55

Input power: 1×220 V 50/60Hz

Frequency variable range: 30~60Hz




CNP, a green water expert beside you.





Frequency conversion range: 30~60Hz


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CNP integrates the advanced R&D technologies from Europe and America, with the most advanced industrial design concept in Western Europe, with the production experience of modern industrial clusters in North America, with the most efficient and energy-saving product structure research in Hangzhou, China.

With the application of information technology, CNP has built its own smart factory, taking the lead in the introduction of SAP resource management system, becoming one of the key units of the key construction project of  "machine substitution" in Hangzhou, with the whole process of production information monitoring and tracking, applying laser welding technology to the manufacturing process of robot pump spare parts in depth, using progressive die technology to ensure the quality of the whole process of the parts, all of which greatly reduce the production and manufacturing cycle, provide an intelligent production and manufacturing basis for the pump production.

CNP was recognized as state-certified enterprise technology center in 2016. It is the highest evaluation level for technology center in China. Besides, CNP has been carrying some technical courses in 11/12/13th National Five-Year Plan.

CNP uses digital integrated intelligent control technology to create domestic advanced M2M mode, intelligent control technology.

It includes intelligent current stabilization system, intelligent vacuum suppression system, intelligent auxiliary control monitoring system, intelligent non-negative pressure full frequency control system and intelligent water hammer two-way elimination system.