This Code covers steam traps which are devices used for removing condensate and noncondensibles from steam systems. The purpose of this Code is to specify and define the practice of conducting tests of steam traps to determine steam loss, under specified conditions; condensate discharge capacity, for specified conditions of saturated and subcooled condensate and back pressure; and air and noncondensible gas removal capacity, under specified conditions. PTC 39-2005 is a re-designation of PTC 39.1 - 1980 Condensate Removal Devices For Steam Systems.