Select from our high quality nylon and PVC plumbing fittings and accessories for aquariums. Bulkheads, ballvalves, check valves, unions, barbed hose fittings and couplers, are available in slip and threaded designs. Combination ballvalve/unions save space in close quarter applications. Maintaining a straight flow, will help maintain the pumps rated gph flow. Check out our complete sump to pump plumbing kits for GenX, Iwaki, Little Giant, CustomSeaLife and Dolphin pumps