Pressure Powered Pump is offered by Forbes Marshall which is an ISO 9001 certified company. The Pressure Powered Pump is the money and energy saving Condensate Return System. These Pressure Powered Pumps condensate without electricity, using just a small blast of steam or air pressure, even under vacuum and stall conditions. Due to its sealed and gland-less design, the collected condensate can be pumped immediately, without waiting for it to cool, and with no risk of cavitations.