QH型切换阀是两个弹簧式安全阀并联，具有同一进口。
The QH type safety valves are composed of two spring loaded safety valves paralleling. There is only one inlet.
通过利用弹簧式安全阀诸压力之间的相互关系，进行该类型安全阀现场整定的方法。
Amethod based on the interrelationship among the pressures in a safety valve is given for determining the pressure Settings.
分析了一般弹簧直接作用式安全阀非正常泄漏的原因，提出了克服其非正常泄漏的方法。
The reason for abnormal leakage of general spring direct acting safety valve is analyzed and the method for overcome this abnormal leakage is proposed.
本文介绍了液化石油气汽车罐车安全阀的特点与要求，着重讨论了下导式弹簧安全阀的设计、制造和调试。
The article introduces the characteristic and demand of LPG carrier tanker safety valve, and discusses emphatically the design, making and debug for lead-down spring safety valve and its structure.
目前大量生产的安全阀有弹簧式和杆式两大类。
At present, there are a large number of production safety valve spring and leveraged two broad categories.
目前大量生产的安全阀有弹簧式和杆式两大类。
At present, there are a large number of production safety valve spring and leveraged two broad categories.
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