![]() ![]() Pipeline Transportation Systems for Liquids and Slurries ASME Code for Pressure Piping, B31 permits free passage of scale and sediment during the blowoff operation.īoiler a pressure vessel that incorporates a fuel input device or mechanism to heat water for space heating or other purposes or to convert water into steam for use in an external distribution system.ASME BPVC.VI pdf free download.Pipeline Transportation System s for Liquids and Slurries ASME Code for Pressure Piping, B31ĪN I N TE R N ATI O N AL P I P I N G CO D E ® ![]() closed at one end.īlowdown: the difference between the opening and closing pressures of a safety or safety relief valve.īlowoff valve: a valve or cock In the bottom and/or near the water line of a boiler, that, when opened. base: support for boiler.īeaded tube end: the rounded exposed end of a rolled tube when the tube metal is formed over against the sheet in which the tube is rolled.īellows seal: a seal in the shape of a bellows used to pie- vent air or gas leakage.īlind nipple: a nipple, or a short piece of piping or tube. Indicating the height of the water in the system above the gage usually found as combination pressure, altitude, and temperature gage.Īmbient temperature: the temperature of the air surrounding the equipment.īaffle: a plate or wafl for deflecting gases or liquids. the maximum pressure for which the boiler was designed and constructed.Īlt itude gage: a pressure gage calibrated in feet. It is usually located at the highest point In the system.Īllowable working pressure. that will effect the removal of air from a steam or hot water heating system. Glossary of Water Treatment Terms.Ībsolute pressure: pressure above zero pressure, the sum of the gage and atmospheric pressures.Īccumulator (steam): a pressure vessel containing water and steam that is used to store the heat of steam for use at a Later period and at some lower pressure.Īir purge: the removal of undesired matter by replacement wh air.Īir vent a valve opening in the top of the highest drum of a boiler or pressure vessel for venting air. For terms relating to boiler water treatment, refer to 9.12. (b) hot water heating and hot water supply boilers for operation at pressures not exceeding 160 psi(1 100 kPa) and/or temperatures not to exceed 250☏(120☌)įor terms relanng to boiler design, refer to Section IV, Heating Boilers, Appendix E. ![]() (a) steam boilers for operation at pressure not exceeding 15 psI (100 kPa) of the ASMI Boiler and Pressure Vessel Code as follows:
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