Selection principle of safety valve
1. For fluorine lined safety valve of steam boiler, generally open the full open tension spring safety valve; 2. The safety valve for liquid medium generally adopts the micro opening tension spring safety valve; 3. The safety valve for air or other gas medium is generally closed full open tension spring safety valve; 4. The safety valve for LPG truck tank car or LPG railway tank car shall be full open built-in safety valve 5 The safety valve for the outlet of oil production well is generally pilot safety valve; 6. The high-pressure bypass safety valve of steam power generation equipment generally adopts the pilot safety valve with two functions of safety and control If regular opening test is required for safety valve, safety valve with lifting wrench shall be selected. When the medium pressure reaches more than 75% of the opening pressure, the valve disc can be lifted slightly from the valve seat with an increasing wrench to check the opening flexibility of the fluorine lined safety valve
Select valves according to different functions
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Ball valve and butterfly valve are commonly used contrast valves. Some situations can be used in general, and some conditions can only be used in one of them
Inspection of stainless steel stop valve: to do a good job of valve inspection is the premise of valve operation management.
The quality of valve installation directly affects the use, so careful attention must be paid.
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