초록 ▼

A flow control device illustrated as a pressure relief valve (10, 10A) has a reciprocable valve member (22, 22A) for seating on a face (20, 20A) of a fixed seat ring (18, 18A). The valve member (22, 22A) includes a hub (36, 36A), an outer seal ring (38, 38A), and a flexible connecting member (40, 40

A flow control device illustrated as a pressure relief valve (10, 10A) has a reciprocable valve member (22, 22A) for seating on a face (20, 20A) of a fixed seat ring (18, 18A). The valve member (22, 22A) includes a hub (36, 36A), an outer seal ring (38, 38A), and a flexible connecting member (40, 40A) extending between and connecting the seal ring (38, 38A) and the hub (36, 36A). Upon seating or reseating of valve member (22, 22A) seal ring (38, 38A) contacts fixed seat ring (18, 18A) and flexible connecting member (40, 40A) flexes upon relative movement of the hub (36, 36A) after initial contact of the seal ring (38, 38A) with the fixed seat ring (20, 20A) to act as a shock absorber for absorbing impact forces.

대표청구항 ▼

In a fluid operated valve having a valve body including a flow passage and a hard annular seat ring mounted within the valve body about the flow passage; an improved fluid pressure responsive reciprocable valve member mounted within the valve body for movement between open and closed positions relat

In a fluid operated valve having a valve body including a flow passage and a hard annular seat ring mounted within the valve body about the flow passage; an improved fluid pressure responsive reciprocable valve member mounted within the valve body for movement between open and closed positions relative to said flow passage and adapted to seat in closed position on said hard seat ring and to exert an impact force against said hard seat ring when seating thereon in response to fluid pressure changes, said improved valve member comprising: a central hub; a hard outer annular seal ring having radially inner and outer peripheral surfaces and spaced radially from said central hub for seating in face-to-face contact relation with said seat ring in the closed position of said valve member; and a flexible connecting member extending in a generally radial direction between said hub and said radially inner peripheral surface of said seal ring, said connecting member flexing between said hub and said inner peripheral surface of said outer seal ring after initial contact of said hard seal ring with said hard seat ring to absorb impact loads resulting from contact of said hard seal ring against said hard seat ring without substantial movement of said hard seal ring.