Profile: Barton Firtop Engineering Company Limited is an ISO 9001 certified manufacturer of filters, strainers, coalescers and supplier of flame arresters for the oil & petrochemical industry. Our kleerflo self-cleaning filter is designed to remove suspended solids from water utilizing an integral backwash system. We offer firplex duplex strainer with standard cast design, which utilizes integral interlinked ball valves for the changeover mechanism.