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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/61411 ; 137/6253 ; 251/121|
|발명자 / 주소||
|인용정보||피인용 횟수 : 4 인용 특허 : 3|
This relates to a valve assembly or hydrant which is particularly suitable for use in conditions where freezing temperatures may be encountered, such as in water supply systems for snowmaking equipment and the like as commonly used in ski resort areas. The valve assembly comprises a valve body, a perforated valve insert in the valve body, a control member movable along the valve insert, and a ball engaging a valve seat in the valve insert. Movement of the control member releases the ball and then progressively opens the perforation thus providing accurat...
A valve assembly, comprising, (a) a valve body, (b) a valve insert in said valve body defining a flow passage, said valve insert having a plurality of flow outlet orifices therefrom spaced therealong, (c) a valve seat in said valve insert and located in said flow passage, (d) shut-off means comprising a ball in said valve insert and engageable with said valve seat to make line contact therewith, and (e) a close fitting control member in said flow passage for closing said flow outlet orifices in a closed position, and movable along said flow passage to fr...