6 MANUALLY OPERATED METAL VALVES, NAMELY ATMOSPHERIC RELIEF, BUTTERFLY, DAMPERS, LOUVER DAMPERS, KNIFE GATE, SLIDE AND SLUICE GATE, LEVER LINKAGE, GUILLOTINE, RAM, WEDGE GATE, SLAB GATE, THRU-CONDUIT GATE, TILTING DISC CHECK, CAT-CRACKER, CHECK, AND TANK BOTTOM VALVES