Maximum Working Pressure

Maximum working pressure, also called maximum allowable working pressure (MAWP), is the maximum amount of pressure a piece of equipment should experience during operation. For pipe fittings, maximum working pressure refers to how much pressure the walls of the fitting can safely tolerate without failing. MAWP is different that burst pressure, which refers to the point at which the fitting will fail. Class is a standard relating to tolerance, construction, dimensions, and wall thickness, but it is not a direct measurement of maximum working pressure.