Welker Filters & Cartridges
CAC Gas provides a range of Welker filters and cartridges for oil & gas applications.

F-4 Filter
The Welker F-4 Filter Dryer helps to remove aerosols, odorant, and liquid hydrocarbons from gas or instrument air. Add a filter to help reduce line freezing, increase instrument performance, and cut down on maintenance.

F-4 Filter Cartridge

F-5 Filter
The Welker F-5 Filter Dryer helps to remove aerosols, odorant, and liquid hydrocarbons from gas or instrument air. Add a filter to help reduce line freezing, increase instrument performance, and cut down on maintenance.

F-5 Filter Cartridge

F-19 Filter
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.

F-19 Filter Cartridge

F-8 Filter
The Welker F-8 Filter 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.

F-9 Filter
The Welker F-9 Filter is 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.

F-8/F-9 Filter Element
The Welker F-9 Filter is 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.

ALD Filter
The ALD-1 incorporates a coalescing device for product supply that is high in aerosols. The device will coalesce the aerosols into liquid droplets, which will then drop around the float.
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