3 02/18 INSULATION: Thickness of insulation for DUC-TITE pipe shall be as shown on the drawing on page four. TEMPERATURE AND PRESSURE: The DUC-TITE piping system and all its components can be designed to operate up to 150 psig at 250ºF, plus typical surges. It should be noted that at these temperatures and pressures, the pipe must be specified unlined and the sealing rings must be EPDM. It is the Design Engineer's responsibility to ensure the lining and ring specified will function properly at the temperatures and pressures used for a given project. DIMENSIONS AND WEIGHTS of insulated DUC-TITE piping and fittings are as shown on page four. The DUC-TITE piping will be furnished in 18 or 20-foot lengths.