Vacuum-brazed, stacked plate construction, Copper Braze as standard with optional Nickel braze material available. Max Flow – 800 GPM with areas up to 365 Sq. Ft. Connections are 316L stainless steel and range from 1/2″ OD to 4″ OD connections in MNPT, FNPT, Sweat, SAE threaded, Flanged, Victaulic grooved, Hose barb, etc. with custom connections available. Optional threaded studs or integral mounting bracket. Available codes include UL, CRN, ASME Code and CE/PED.