Ball float steam traps have an integral air vent as standard and the options of a manually adjustable needle valve and drain cock tapping, the Ball Floating range is adaptable to all applications where ball float traps are recommended and instantaneous removal of condensate is required. » Size Range: DN15 through DN100, 1/2”~4” » Pressure Class: ANSI CL150 through CL300, PN10 to PN64 » Cast or Forged Body in Cast Iron, Carbon Steel, Stainless Steel, or Duplex » Trim: Stainless Steel Gr. 304 Trim as standard http://www.vatacvalve.net/