Specializing In Controls and Parts for Firetrol Controls, Joslyn Clark Controls, Metron Controls, Jockey Pump Controllers, Diesel Engine repairs and maintenance, NFPA-25 Inspections and flow test. ABOUT CONTACT TECHNICIANS TERRITORIES DIESEL ENGINES FIRE PUMP TESTING About Representing the best among Fire Pump Control Systems, GDS Controls, Inc. prides itself on providing quality start-up, repairs and maintenance of your Fire Pump System. Installations including Electric Fire Pump Systems with transfer switches. Diesel Fire Pump Systems annual maintenance and repacking service. Manufactures Representative FIRETROL fire pump controls and parts FIRETROL stand-alone fire pump transfer switch JOSLYN CLARK fire pump controls & parts METRON fire pump controls & parts CLARKE fire pump engine repair & service National and International representative and distributor for Joslyn Clark Fire Pump Controller Parts