| 摘要 |
A system includes a selector valve having a housing with upward primary and dual flow path secondary spikes for connection to respective fluid supplies, an outlet for connection to the patient, and a valve member movable to route primary fluid direct to the outlet with no secondary fluid supply, or through one secondary spike path while the second path is connected to the outlet. The secondary spike pref. projects upwardly from the housing at about 45 deg. to the primary spike. The member pref. has a pair of semi-circumferential grooves, with shoulders between the adjacent groove ends, these blocking flow through the outlet in an intermediate position. |
