They are commonly used with bladder tanks, balanced pressure pump proportioning systems and in-line foam proportioners, HD foam chambers are ideal for protection of flammable liquid storage tanks. HD foam makers are used for protection of dikes, tanks and where low-velocity foam streams are needed. HD rim seal foam pourers are used for protection of floating roof storage tanks. HD foam sprinklers are air-aspirating foam discharge outlets designed for use in foam-water deluge systems. They are designed for flammable liquid risks where it is desired to apply foam from overhead sprinklers. HD foam equipment are UL Listed and FM Approved. Please refer to product catalogues for approval information, technical specifications and ordering information.