Auto AC Evaporator Expansion Valve A4478350400 2178300084 for Mercedes-benz S550 S63AMG S65AMG Maybach S550 S560 S600

Auto AC Evaporator Expansion Valve A4478350400 2178300084 For Mercedes-benz S550 S63AMG S65AMG Maybach S550 S560 S600, Function of expansion valve: It can help the automobile air conditioning system reduce pressure and throttle, and realize refrigeration. Automatically adjust the flow to adapt to the changing needs of refrigeration load, so that the evaporator works in the best state.

1. Before commissioning, the packing gland shall be loosened first, and the gland shall be pressed tightly after adjustment to prevent refrigerant leakage.

2. Before commissioning, the actual situation can be estimated. When it is close to the stability adjustment, the adjusting bolt can be rotated for another 1/4~1/2 turn.

3. Turn the superheat adjusting bolt and observe the low pressure.

4. When the adjusting bolt of the valve is rotated in the opposite direction, the spring force increases and the valve opening decreases, that is, the flow decreases.

5. When the adjusting bolt is rotated in the clockwise direction, the spring force will weaken, and the valve opening will increase, that is, the flow will increase.

6. Generally, the bolt is rotated for one circle, and the change of its superheat degree is about 0 °.

Can we be your agent?

Yes, welcome to cooperation with this. We have big promotion in the market now. For the details please contact with our overseas manager.

Do you accept custom design on size?

A: Yes, if the size is reasonable

If l have a product wants to be made in other special material, can you do it?

Of course, you just need to provide us designed drawings or sample and R&D department will estimate that whether we can do or not, we will give you the most satisfactory reply.

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