The Welker F-4 and F-5 Filter/Dryers help to remove aerosols, odorant, and liquid hydrocarbons from gas or instrument air.

The Welker F-7 and F-8 Filters are designed to filter particulates from natural gas to protect downstream instrumentation. As gas flows through the filter, the particulates are separated by the filter media, thus cleaning the gas for use by downstream pneumatic controllers or other instruments.

The Welker F-9 and F-10 Filters are designed to filter particulates from gas or liquid products to protect downstream equipment. As product flows through the filter, particulates are separated by the filter media, thus cleaning the liquid prior to use by downstream equipment.

The Welker F-19 Filter Dryer is designed to filter and dry natural gas to prepare it for use as an instrument supply. As gas flows through the F-19, water, aerosols, odorant, and liquid hydrocarbons are removed by the filter media, thus cleaning and drying the gas for use by downstream pneumatic controllers or other instruments.