Description: STEEL SHELL2" CLEAN OUT AT FRONT20" MANHOLE AT CENTER AND 6" AT REARINSULATEDALUMINUM OUTER JACKET4" DISCHARGE OUT REAR WITH A WHEEL OPERATED VALVE REDUCED TO 3" DISCHARGE LINE WITH A GATE VALVE AND 1" SAMPLE VALVE IN REAR HEAD3" FRONT PUMP OFF SPRING SUSPENSIONSTEEL STUD PILOT WHEELS285/75R 24.5 TIRES