With over 25 years of experience with pneumatic pumps, Durham Geo has now produced the SRX.  Using  proven components from the successful MVP pump Durham Geo has built a product that is simple and has few parts. The result?  Reliability and effortless maintenance. It is so simple that, in minutes, the complete pump (including air, exhaust and fl uid discharge check valves) can be disassembled with only one spanner.