DPF SERIES, Electronic Expansion Valve ~ Dunan brand

Features
 A series electronic expansion valve is mainly used for domestic inverter air conditioning system, the refrigerant flow rate by adjusting the size, so that higher overall system efficiency and achieve rapid cooling, precise temperature control, energy saving purposes.
Features
 control of high precision;
 two-way flow;
 Low power consumption;
 flow adjustment range;
 compact structure, small size.
Scope
Suitable refrigerants: R22, R407C, R410A;
maximum working pressure: 4.2MPa;
 The maximum operating pressure difference: 3.5MPa;
 Applicable Refrigerant temperature: -30 ℃ ~ + 70 ℃ (energization rate of 50% or less);
 Ambient temperature: -30 ℃ ~ + 60 ℃ (energization rate of 50% or less);
 Applicable Relative humidity: 95% RH or less.

Full closure - full pulses                                                             500 pulses
Valve opening pulse number                                                    30 ± 20 (fully closed except for flow valve)
Drive power                                                                                   DC12V ± 10%, a rectangular wave
Drive mode                                                                                    8 shot 4-phase stepper motor 20 pole permanent magnet

Excitation mode                                                                            1-2 phase excitation
Medium flow direction                                                                  Positive and negative Jieke
Life                                                                                                    ≥10 million times
Insulation Class                                                                             E
Coil resistance                                                                              46 ± 3.7Ω (20 ℃)
Coil current                                                                                    260mA / phase (20 ℃)

Question1: Did you accept products customization?Is they need mould fee?

Answer: Yes, we accept products customization.Need mould fee,because products usually need extra mould cost.But,we can return the mould fee when you reach a specific quantity.

Question2: Can we get free samples?

Answer: Little quantity normal copper fitting samples can provide for free except for delivery cost.

Question3: How long is the normal production period for a 20-foot shipping container?

Answer: According to the current productive capacity, usually needs 30 days from producing to delivery.

Question4:What is the type of payment?

Answer: Usually you should prepay 30% of the total amount. The balance should be pay off before we get the original B/L.

Question5:How to guarantee the high quality?

Answer: We have testing department to make sure every product of size,appearance and pressure test are good.

Question6: How is the raw copper material price?

Answer: The price of copper is decided by the LME cash buyer price at the day when clients submit the orders.