Patay Challenger Drum Pumps. Specifically designed for 25 ltr or 200 ltr drums. Simple and inexpensive. Supplied complete with bung, riser tube and viton or nitrile seals. Made from very strong polypropylene with a tough steel operating rod, this easy to fit pump has many applications. Only plastic parts come into contact with the liquid being pumped, therefore a range of fluids can be transferred. Dry, self priming.