This is an Exhaust Adapter Kit for Edwards CTI Cryo Pumps, 304 SS, 1/2 inch FNPT, Includes gasket and hardware. This fits over the pressure relief valve on all CTI cryo pumps and takes the pressurized gasses to a captured exhaust system instead or venting into a room where the cryo pump is installed. This is a safety device that protects environments and personnel from toxic and explosive gas releases. For a 1/2 MNPT to 1/2 Tubing Male Connector Fitting for the hose go to: (P1010479 on this website)