| 摘要 |
A freeze resistant manifold includes a plurality of conduits, junction, and expansion device. Each conduit of the plurality of conduits includes a respective first end in fluid communication with a respective second end. The junction is defined by each of the respective first ends of the plurality of conduits in direct fluid communication with a remainder of the first ends of the plurality of conduits. The expansion device includes a housing, plug, and linear actuator. The housing has a first housing end and a second housing end. The first housing end is in fluid communication with the junction. The plug is disposed between the first housing end and the second housing end. The plug has a substantially fluid-tight, sliding engagement with an inner wall of the housing. The linear actuator is to urge the plug towards the first housing end with a predetermined amount of force. The plug is held proximal to the first housing end by the linear actuator in response to a fluid pressure in the junction being less than a predetermined normal working pressure. The plug is moved towards the second end in response to the fluid pressure in the junction exceeding the predetermined normal working pressure.
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