closing the bleed orifice from the main section. This gives a very rapid response of themain or power section opening or closing the supply valve. T h e valve shown has a relievingfeamre to prevent any buildup of downstream pressure. There is always a slight air bleedthrough the exhaust port. T h i s air bleed is necessary to give the rapid response and highaccuracy of this type of valve.Whatever type of regulator is used it must be positioned as near as possible to thepoint of application of the regulated air.
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