Patent ID: 7740023

Claim:
A valve assembly comprising: a housing including at least a first inlet passage and an outlet passage; a flow channel disposed within the housing, at least a portion of the flow channel extending inward from the first inlet passage; a first check member disposed within the first inlet passage, the first check member movable along the flow channel between a closed position in which the first check member is disposed against a first valve seat and an open position in which the first check member is spaced from the first valve seat, wherein movement of the first check member from the closed position to the open position is unopposed; a second check member disposed within a second inlet passage of the housing, the second check member movable between a closed position in which the second check member is disposed against a second valve seat and an open position in which the second check member is spaced from the second valve seat; wherein a diameter of the first check member is less than a diameter of the second check member; a resilient member disposed about a common axis of the first and second valve seats, a resilient member first end operably engaged adjacent the first valve seat and a resilient member second end operably engaged with the second check member to bias the same against the second valve seat; wherein the resilient member includes a resilient coil spring; wherein an inner diameter of the resilient coil spring is greater than the diameter of the first check member and less than the diameter of the second check member; and wherein the first check member is configured to move unopposed from the closed position to the open position within a lumen of the resilient coil spring.