Fuseal Double Combo Wye 90° PP S x S x S x S

  Datasheet (PDF)

The Georg Fischer Fuseal double combo wye 90 degrees is an engineered polypropylene sanitary fitting designed for high-capacity corrosive chemical waste drainage systems where two opposing branches transition seamlessly into a central drain line. Manufactured by Georg Fischer (GF Piping Systems) in sizes from 8 to 12 inches with an all-socket (S x S x S x S) configuration, this heavy-duty directional fitting merges a standard wye branching profile with sweeping eighth-bend radii to maximize hydraulic sweep, significantly reduce fluid turbulence, minimize solids deposition, and eliminate flow impedance at critical network intersections. Engineered for severe laboratory, industrial processing, pharmaceutical, hospital, and university facility drainage installations, the component is available in both flame retardant (PPFR) for above-grade plenum requirements and non-flame retardant (PPNFR) polypropylene formulations for below-grade applications. The fitting integrates fully into the Fuseal LD electrofusion system, utilizing controlled electrical resistance coil technology to produce homogeneous, permanent melt zones across each hub connection that equal or exceed the parent pipe strength while offering total structural integrity against vacuum forces and intermittent pressurized discharges up to 50 psi. Built to handle continuous operating fluid temperatures up to 180 degrees Fahrenheit (82 degrees Celsius) and intermittent surge discharges up to 212 degrees Fahrenheit (100 degrees Celsius), the polypropylene construction exhibits complete resistance against harsh mineral acids, aggressive alkalis, alcohols, solvents, and destructive salt solutions without susceptibility to rust, pitting, scaling, or electrolytic galvanic corrosion. In above-ground routing, the UV-resistant, heat-stabilized pigmentation shields the polymer matrix from environmental degradation, providing a durable, maintenance-free, and chemically inert junction for high-volume drainage infrastructure.