SEATTLE, WA — (Marketwired) — 11/11/14 — has introduced a line of that incorporate a split-hub design which is stronger, more adjustable, and easier to install and remove than conventional one-piece or bolted-blade impellers.feature four blades with a narrow, low-pitch section at the tip where the speed is fastest and a wider, higher-pitch section near the hub where it is slower for maximum efficiency. In 24" dia. and larger sizes, the blades are welded directly to a split-hub that ca
