| 摘要 |
A fluid control valve assembly is disclosed that includes a housing, a valve with a ring-shaped groove, and a seal ring with a clearance extending between an outer diameter and an inner diameter. The seal ring includes a pair of opposing axial side surfaces and is provided in the groove. The seal ring seals against the housing when the valve is in the closed position. The valve assembly also includes a backup ring provided in the groove adjacent one of the axial side surfaces of the seal ring to thereby obstruct fluid flow through the clearance of the seal ring when the valve is in the closed position.
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