The Cla-Val Model 349GF Strainer Ball Valve bolts to the inlet of any Cla-Val fueling nozzle to allow quick and easy strainer checks. The integral side port allows for visual checking of the strainer with no fuel spillage. It is strong enough to withstand hydrostatic hose testing in the closed position and the commercial refueling version has a swivel joint inlet with internal threads for connecting to the delivery hose.