The FG type filter is for gas pipelines to DIN3386, with high holding capacity of dust & impurities. - Suitable for natural gas, LPG, & biologically produced methane & air. - The incorporated filtering cartridge is a steel support frame covered with a double-layer of high performance polyolefin fibres. - This satisfies the stringent requirements of fire class FI according to DIN53438. - Other models available to suit higher pressures. - Sizes available to order from ½" - DIN300.