Pneumatic libraries contain blocks for the pneumatic domain, organized into elements, sources, and sensors. Connect these blocks together just as you would assemble a physical system. Use these blocks, along with the blocks from other Foundation libraries and the add-on products, to model multidomain physical systems.
The Utilities library contains the Gas Properties block, which lets you specify the gas properties in the connected pneumatic loop. These gas properties are assumed to be constant during simulation time.