Key points for selection of solenoid valve products
1) the main control parameters selected for the solenoid valve are diameter, design nominal pressure, allowable temperature range of medium, interface size, etc.
2) the solenoid valve is used to push the opening and closing of the valve with the electromagnet, which is usually used in the two-position control with the caliber of less than 40mm, especially for connecting, cutting or changing the air and liquid circuits.
3) the sealing performance of the valve is one of the main indexes to evaluate the quality of the valve. The sealing performance of the valve mainly includes two aspects: internal leakage and external leakage. Internal leakage refers to the sealing degree of the medium between the valve seat and the closing part. Leakage refers to the leakage of the valve stem packing part, the leakage of the middle gasket part and the leakage of the valve body caused by casting defects. Leakage is not allowed.
4) the main advantages of solenoid valve are small volume, reliable operation, convenient maintenance and low price. During selection, attention shall be paid to selecting normally open or normally closed type according to process requirements.