Special Features:

Cartridge materials: steel with zinc-plated exposed surfaces; seals: buna n o-rings and back-ups standard

Properties:

A valve having one outlet and two inlets that are usually opposite each other. It has a fluid pressure operated pistonlike item, called a shuttle, that controls either inlet. It is commonly used to provide an emergency passage for fluid in an aircraft hydraulic or pneumatic system in case of loss of pressure in the normal service lines.