1. First of all, the design of the safety valve must meet the requests from users.

2. The price of the product should be the most reasonable once upon the actual working condition.

3. The first though design should have in their mind is that making the overall performance of the valve reach the anticipation and standards.

4. More tests promise more precise and detailed parameters.

5. The spring’s stiffness should be paid more attention. Appropriate design enables the valve’s internal parts to match each other batter, making it easy to assemble, disassemble and maintain.

6.Safety valve needs to be designed to have a longer service life.

Generally, the medium of safety valve can be divided into three types: steam, gas and liquid. But designers cannot do performance tests of various media at the same time.

Due to heavy oil (asphalt) and other media, the qualified performance data obtained from the cold test may become unsatisfactory. Therefore, the safety valve design cannot duplicate any other mature product models. The valve should be manufactured with appropriate spring rigidity and reasonable internal structure according to different media. Of course, the design principle of the safety valve is to produce products that users satisfy, and the only design shortcut is the experience accumulated from practice.