Gardner Denver HD and STD drilling modules are compact and built to last, delivering high performance,
pressure and flow rates more than two times longer than others. Made with individually forged,
heat-treated alloy steel using our proprietary Autofrettage technique, each module offers extended life
and maximum strength, yet can be welded to repair washouts. And service is simple with built-in patent
pending Falcon Technology, with a single-piece, twist-in retainer, and no fasteners required.