... suck, liquefy and store SF6 gas from the insulating equipment. The quality of the retrieved SF6 gas complies with Chinese GB8905-88 ... Gas retrieving systemIt is composed of air compressor, bumper, separator, filter, heat exchanger, safety valve, one-way valve, gas pressure ... exhaust pipes;M. FilterThe filter is designed to efficiently remove water and solid particulates in the oil and prevent them to ...