The Ingersoll Rand TS5 piston air compressor pump is rated to 15.5cfm @ 175psi. This is a cast iron two stage pump. The TS5 was most commonly used on the TS5L5 air compressor sold through Tractor Supply company. Unlike Ingersoll Rand's more commong T30 two stage compressors, the TS series was an inline style pump rather than the V-shape design.
The internal Ingersoll Rand part number for this TS5 piston compressor pump is 22235923.