The Quick Connect Air Compressor Irrigation Blow Out Fitting from Quick Products allows for an easy winterization of your underground irrigation system, stopping freeze damage from water left in the pipes and hoses. The female fitting attaches to the blow out valve and accepts common quick connect air compressor fittings. The one-piece construction and interior rubber gasket eliminate any potential leaks due to cracks and seams, providing a tight, reliable seal every use. Be sure to follow the blow out instructions provided by the irrigation system's manufacturer and wear ANSI-approved eye protection during use.