DRL Constant Pressure Frequency Conversion Water Supply System



  • 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



The integrated complete set of water supply equipment is composed of electric control cabinet, pump group, pipeline accessories and pressure tank. Take water from the water tank, convenient installation, automatic operation, high efficiency and energy saving, safe and reliable, long service life.



1.Fully automatic unattended operation

The system uses the latest performance control technology to achieve fully automatic control.

2.Adjust constant water pressure

The intelligent frequency conversion technology automatically adjusts the running speed and numbers of pump, keeps constant pressure of pipe network, and keeps the entire water supply system in an optimal state of high efficiency and energy saving.

3.Energy efficient operation

The intelligent control system adopts various frequency conversion control methods, combined with characteristics of the performance curve of pump, automatically optimizes the analysis and adjustment, so that each pump always runs at a high efficiency point, saving energy effectively.

4.Health and safety

All flow passage components of the equipment are processed in food grade Stainless Steel and are fully compliant with related water health regulations.

5.Longer service life

The equipment pipeline processed by Cold Water Cutting Anti-oxidation Procedure, hardware produced with automatic welding technology, and low-voltage components of international famous brands, are combined together to ensure longer service life of the equipment.



1. NFC series water supply dedicated frequency conversion controller

2. Intelligent three-core extreme speed inverter controller

3. Remote monitor

4. High precision meters

5. Control cabinet

6. Expanded options, precise customization



Beautiful appearance, compact structure, highly intelligent, energy saving, extremely simple operation and friendly man-machine interface






CNP, a green water expert beside you.


Flow rate:0.4~144m³/h





Water supply  for residential and public buildings

Gardening irrigation

Other applications


Stainless steel

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.