安全阀

安全阀门（），是在设备故障时防止事故的一种阀门。

安全阀的其中一个重要的类别是：紧急自动泄压阀（PRV），当压力或温度超过预设限值时，它将自动从锅炉、压力容器或其他系统中释放物质。

先导式安全阀是一种特殊类型的压力安全阀。防渗漏效果好，成本造价较低，一次性紧急使用，具备安全阀工程的装置是爆破片或爆破帽。

参考文献
外部連結

• [https://web.archive.org/web/20150604164405/http://articles.compressionjobs.com/articles/oilfield-101/4393-valves-pipelines-gate-globe-needle-angle-plug-ball-butterfly-check?start=3 Schematical overview working principle Safety Relief Valve]
• [https://web.archive.org/web/20140701051745/http://www.enggcyclopedia.com/calculators/instrument-sizing/psv-sizing-calculator-blocked-liquid-discharge/ Pressure relief valve sizing calculator] PSV sizing calculator for liquid blocked outlet case.
• [https://web.archive.org/web/20140203033255/http://www.enggcyclopedia.com/calculators/instrument-sizing/psv-sizing-calculator-blocked-gas-discharge/ PSV sizing calculator for blocked gas outlet case.] PSV sizing calculator for blocked gas discharge.
• [https://web.archive.org/web/20140325114825/http://www.enggcyclopedia.com/calculators/instrument-sizing/psv-sizing-calculator-fire-case-gas-filled-vessel/ PSV sizing calculator - fire case for gas filled vessel]
• [https://web.archive.org/web/20160303183413/http://www.enggcyclopedia.com/calculators/instrument-sizing/psv-sizing-calculator-fire-case-liquid-filled-vessel/ PSV sizing calculator - fire case for liquid filled vessel]