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VPF series electronic expansion valve

The VPF series is an electronic expansion valve designed and developed for commercial and industrial applications. It is widely used in air-conditioning refrigeration and heat pump systems, and can be adjusted Agent flow rate to achieve rapid cooling or heating, precise temperature control and energy saving The purpose of consumption, so that the system is in the optimal state. The series is also available For pressure control of the suction line. The VPF flow curve is bidirectional and equal It has the same characteristics in the positive and negative flow directions, so that it can be used in cooling and heating The purpose of precise flow control can be achieved under both working conditions.

Keywords:

VPF series electronic expansion valve

Classification:

Sanhua Electronic Expansion Valve

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Product Details

The VPF series is an electronic expansion valve designed and developed for commercial and industrial applications. It is widely used in air-conditioning refrigeration and heat pump systems. It can adjust the refrigerant flow rate to achieve rapid cooling or heating, precise temperature control, and energy saving and consumption reduction. So that the system is in an optimal state. This series can also be used to control the pressure of the suction line. The VPF flow curve is a two-way reciprocal design, and has the same characteristics in the positive and negative flow directions, so that the purpose of accurately controlling the flow can be achieved in both cooling and heating conditions.

 

Features

• Up to 3800 steps and large stroke to accurately regulate the flow rate, high efficiency and energy saving

• It has a two-way cutoff function, which is closed tightly like a solenoid valve

• Two-way equal flow curve to ensure the equal performance of the system at both ends of cooling and heating

• All stainless steel anti-corrosion design, perfect sealing, stable life, higher product reliability

• Integrated compact design, low height, small size, light weight, and smaller installation space

• The model with sight glass can be selected to monitor the action of the valve and observe the state of the refrigerant

 

General specifications

• Suitable for all common HCFC, HFC and HFO refrigerants, such as: R22, R134a, R404A, R407C, R410A, R507A, R1234ze

• Cooling capacity: 44~ 1397 kW (R134a nominal cooling capacity)

• The total pulse is 3800 steps (fully open); the valve opening pulse is 110 steps (VPF12.5, VPF25) and 165 steps (VPF50…400)

• Medium temperature TS min./max.: -40°C / +90°C (electricity rate below 50%)

• Ambient temperature min./max.: -40°C / +60°C (power rate below 50%)

• Maximum working pressure:

  VPF12.5/25/50/100/150: 5.0Mpa

  VPF250/400: 4.5Mpa

• Maximum working pressure difference (forward/reverse):

  VPF12.5/25/50/100/150: 3.9Mpa

  VPF250/400: 3.5Mpa

• Relative humidity: 0 ~ 100% RH, packaging storage humidity: below 65% RH

• Installation method:

  -The main flow direction of the refrigerant corresponds to the arrow

  -Can be installed horizontally or vertically

  -When installing vertically, it is recommended that the end of the stepping motor face upwards and the central axis is installed perpendicular to the horizontal

• Certification: Conforms to PED and EAC directives

 

Electrical parameters

• Rated voltage: 12V DC, rectangular wave

• Drive mode: 2-phase 4-beat permanent magnet stepper motor

• Excitation mode: 2-phase excitation, bipolar drive

• Excitation rate: 300 pps (current drive), 150pps (voltage drive)

• The shortest action time from fully open to fully closed (current drive):

-VPF12.5, VPF25, VPF50: 8,7s

-VPF100: 11,7s

-VPF150, VPF250, VPF400: 12,7s

• Motor rated current: 100mA RMS / phase (during normal control)

• Motor peak current: 140mA / phase (during reset operation)

• Winding resistance: 52 ± 5,2Ω/winding (20℃)

• Coil insulation class: E

• Degree of protection: IP 67

 

 

 

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