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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/5121 ; 137/527|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 20 인용 특허 : 2|
Two half-discs of a flapper type check valve are mounted on an internally supported shaft in a two piece valve body to swing from a coplanar closed position to a back-to-back relationship when the valve is fully open. Stops integrally formed within a bell-shaped downstream part of the valve body engage mating parts of the half-discs when the valve is in fully open condition with the half-discs so positioned behind a transverse rib that there is no interference with flow. The two pieces of the valve body each have external circumferential grooves for easy...
A check valve comprising a valve body formed in two parts, a downstream part of said valve body defining a generally bell-shaped flow chamber and an outlet from said flow chamber, and an upstream part of said valve body including an inlet and a shaft mounted transversely with respect to said inlet, said shaft carrying a pair of half-discs mounted for movement from a generally coplanar closed position with said half-discs in contact with a valve seat formed in said upstream valve part to a fully open position with said half-discs resting against stop mean...