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Safety Valves - Check Valves - Steam Traps How to Implement Protection
1. Safety valve protection facilities Under normal circumstances, the safety valve is not set before and after the cut-off valve, only in some cases, before and after the safety valve set off the valve. If the medium contains solid impurities, affecting the safety valve can not be shut off after take-off, in front of the safety valve to install a seal with a gate valve. Should be in the fully open position, between the gate valve and the safety valve installed a diameter of the DN20 inspection valve. For safety valve release of wax, phenol and other media at room temperature in a solid state, or reduced pressure vaporization of light liquid hydrocarbons and other media temperature below 0 degrees, the safety valve needs to add steam with heat. For the safety valve for corrosive media, depending on the valve corrosion resistance, consider corrosion-resistant explosion-proof membrane at the valve inlet. Gas relief valve is generally set by its path a bypass valve, as a manual vent. 2. Check valve protection facilities In order to prevent the check valve leakage or failure after the media back to back, before and after the check valve should be set to one or two shut-off valve. If you set two shut-off valves, can facilitate the removal of the check valve for maintenance. 3 steam traps protective equipment Steam traps with bypass pipe and without bypass pipe points; condensate recovery and condensation of non-recovery points. Large displacement and other special requirements of steam traps, can be used in parallel form of installation facilities.