GSM-50-150 series medium expansion foam generators are created to operate at lower residual pressure values and to have a major expansion rate respec ng the standard GSM series medium expansion foam generators. The difference in the expansion rate is created by the larger body size and the larger expansion net area. GSM-50-150 series medium expansion foam generators come with handles to be used in a portable manner. The equipment consists of a stainless steel body, internal expansion net and inlet connec on port with calibrated orifice. Having no moving parts and a fixed orifice makes the equipment reliable and maintenance free for long term usage. Medium expansion generators may be requested either threaded connec ons, flanged connec ons or instantaneous connec on means as required.