This DERNORD stainless steel hose adaptor has a female end for connecting to threaded pipe conforming to National Pipe Thread (NPT) standards and a barbed fitting for connecting to hose . The barbed fitting on one end creates a tight seal on flexible or semi-rigid hose when used with a hose clamp or crimp sleeve or ferrule (sold separately), and a female NPT fitting on the other end connects to threaded pipe to form a tight, fixed connection.