|         Valves for discharging and safety devices.   This family of valves are designed to remove fluid from a piping system.   They may discharge to another piping system, to a drain, to the atmosphere or even to a vessel operating at a lower pressure.   They are often automatic in operation.   Since a valve that works by levers and weights can easily be render inoperative by personnel most pressure relieving valves are spring loaded. |
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|         Ball Float Valve   These automatic valves find use in several applications.   It can be use as an air trap to remove water from air systems.   They can also be used to remove air from liquid services and act as either vacuum breakers or a breather valve.   These can also be used to control the level of a liquid in a storage tank.   They are not design to be used in removing condensate from services. |
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