DHE series horizontal intelligent constant pressure variable frequency pump adopts the combination of frequency control and automatic control technology, with high efficiency and energy saving DHE non self priming light horizontal multistage centrifugal pump. The machine is mainly composed of DHE pump, controller, sensor, pressure tank, five-way check valve and axial anti-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, etc.

DHE series horizontal intelligent constant pressure variable frequency pump adopts the combination of frequency control and automatic control technology, with high efficiency and energy saving DHE non self priming light horizontal multistage centrifugal pump. The machine is mainly composed of DHE pump, controller, sensor, pressure tank, five-way check valve and axial anti-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, etc.

Motor
The motor is fully enclosed, air-cooled secondary motor
Protection class: IP55
Insulation class: F

Controller
Protection class: IP55
Input power: 1X220V 50/60Hz

Functional features
Fully automatic operation: according to the demand of automatic start and stop can also according to the size of the water consumption of automatic speed control to ensure constant pressure and energy saving.
Clean and hygienic: the flow parts are made of stainless steel to ensure that the water quality will not be polluted twice.
Constant pressure: through the pressure tank difference compensation principle, to ensure that the pipeline pressure constant.
Electrical protection: the controller is equipped with overcurrent, overload, lack of phase and other protection, when the controller detects electrical failure, the display will appear inverter fault signal and automatically control the pump shutdown protection.
Self-set pressure: within the pump performance range, the pressure can be set by the control panel.
High efficiency and energy saving: When the user's water volume is reduced, the controller drives the motor to run slowly, thereby reducing the actual output power of the pump. Compared with the traditional frequency motor (constant speed) to greatly reduce the power consumption of the pump. In turn, the user saves electricity consumption. Achieve the effect of high efficiency and energy saving.

Curve conditions
The following conditions apply to the performance curves shown later
1. All curves are based on the measured value of the motor at a constant speed of 3500rpm
2. Curve tolerance meets the ISO9906:2012,3B grade
3. The test uses clean cold water without air at 20 ℃, and the kinematic viscosity is 1mm/s.
4. The use of the pump shall refer to the performance range of the bold curve to prevent overheating or overload of the motor due to too small flow rate.