DUAL PRESSURE SHUTTLE VALVE

摘要

A dual pressure shuttle valve assembly is arranged to operate at two different supply pressures and sequence the flow from the two supplies such that the first lower pressure fluid supply is consumed before the second higher pressure fluid supply is utilized in order to maximize downstream function pressure. The shuttle valve assembly includes a shuttle assembly with opposition portions having different valve seat diameters, and having differently sized apertures.

主权项

1. A shuttle valve body for engagement with a first adapter and a second adapter, the shuttle body comprising:
an outlet port and a shuttle, the shuttle including:
a first portion for engagement with the first adapter, the first portion having first apertures, said first portion sized to slide at least partially within the first adapter such that a first valve seal on the shuttle is selectively sealingly engageable with a first valve seat of the first adapter;a second portion for engagement with the second adapter, the second portion having second apertures, said second portion sized to slide at least partially within the second adapter such that a second valve seal on the shuttle is selectively sealingly engageable with a second valve seat of the second adapter; wherein the first apertures are smaller than the second apertures; and wherein the first valve seat has a diameter larger than the diameter of the second valve seat such that the first portion is has a larger diameter than the second portion.