详细说明了阀门的使用寿命，包括选型、验收、储存和搬运、安装、操作和维护。本文讨论的具体阀门有蝶阀、旋塞阀、闸阀，包括双阀瓣、弹性阀座、刀闸阀、实心楔、止回阀、分接阀和特殊用途阀门。讨论的特殊用途阀门包括球阀、闸阀、截止阀、防回流装置、隔膜阀、锥形阀、压力调节器、真空断路器、角度控制阀和滑动消能器。

Details are given on the life of a valve, including type selection, receiving inspection, storage and handling, installation, operation, and maintenance. Specific valves discussed in this paper are butterfly valves, plug valves, gate valves including double disc, resilient seated, knife gate, solid wedge, check valves, tapping valves, and special use valves. Special use valves discussed include, ball valves, sluice gates, globe valves, backflow prevention devices, diaphragm valves, cone valves, pressure regulators, vacuum breakers, angle control valves, and slide energy dissipators.