Pressure foam proportioning device main tank, capsules, proportioner, water pipe, outlet pipe, drain valve, drain valve, safety valve, pressure gauge. Used to store the foam extinguishing agent, through proportioner role will fire water storage tank replacement foam extinguishing agent, and with the water by a certain percentage of the unit mix to form a foam mixture. According to the structure can be divided into horizontal and vertical. The device used for liquid, liquid and semi-liquid spray foam under fire extinguishing system, foam sprinkler system, or as a foam gun, artillery fire mixture supply device is widely used in oil depot tank area, chemical plants, aircraft hangars, oil, oil-fired boiler room, underground garage, storage of dangerous goods, chemicals, warehouses and other places. Features: (1) there are film-forming foam extinguishing agent and film self-healing. The resurgence of anti-ability; (2) the foam liquid can be stored for 20 years is not bad. The general store foam concentrate only 2 years; (3) the effectiveness of high fire. Foam extinguishing agent is generally 2 to 3 times; (4) for non-aspirating foam injection means; (5) applies foam mixture flow rate range, the mixing ratio of accurate for 3% and 6% foam type liquid ; (6) pressure loss; (7) flexible movement. Belongs to mechanical transmission; (8) corrosion. Parts made of stainless steel and copper alloy; (9) Built-tank foam liquid capsules, liquid water and foam isolation, continuous repeated use; (10) with automatic sprinkler systems in conjunction with, and to achieve automatic; ( 11) With the water supply pressure to achieve the foam concentrate, without a separate power source foam; (12) is adapted to the transformation of fire sprinkler systems. Only increase the foam proportioner and foam liquid storage tanks.