lower housing of  thermostat is mainly for pressure casting whose diemension of main parts will be done a

mechanical processing, its surface has made a treatment of ball blast, which improved the corrosion resistance of the products and is used for the diesel engine of  Nanchang-Kaima.

features as follows:

1. flatness of two sides connected ≤0.05

2. each of hole site has high position accuracy.

3. sensor is connected through screw thread and anaerobic adhesive

4. all of products will have a test of gas tightness before delivery.