Furnished in Winston/Royal Guard products, filter cartridges remove unwanted solids from a gas or liquid stream, and while coalescing cartridges will remove fine solids from a gas or liquid stream their primary function is to aid in the removal of unwanted liquids.

Filter Cartridges WCL536 (0.3) with 0.3 micron rating has a flow path from outside to inside and furnished in the Type 150 Filter-Separator for removal of aerosol size and larger liquid and solid particles from natural gas. These filters are also furnished in the Type 65 Dry Gas Filter for removal of solid particles such as rust, scale, and dust.

Filter Cartridges WCL536 Series with 0.5, 1, and 5 micron ratings has a flow path from outside to inside and furnished in the Type 150 Filter-Separator for removal of aerosol size and larger liquid and solid particles from natural gas. These filters are also furnished in the Type 65 Dry Gas Filter for removal of solid particles such as rust, scale, and dust.

Filter Cartridges WP-L436b Series with pleated polypropylene or polyester media with a flow path from outside to inside.  These are recommended in the Type 65 Dry Gas Filter for longer service life between cartridge change-outs resulting in lower maintenance cost and reduction in lost gas revenues.  Available is the WP-L436b1 beta 1000 filter cartridge (99.9% efficiency) or the WP-L436b5 beta 5000 filter cartridge (99.98% efficiency).  Both are for removal of 1 micron and larger solid particles such as rust, scale, and dust from dry gas.

Coalescing Cartridges WCL536R (0.3) with 0.3 micron rating has a flow path from inside to outside and furnished in the Winston/Royal Guard Type 140 Gas-Liquid Coalescer for removal of aerosol particles including lube oil from a natural gas stream. Extremely fine solids will also be captured.

Coalescing Cartridges WCT6--R Series has a flow path from inside to outside and furnished in the Type 62-CC-2S Liquid-Liquid Coalescer Separator to coalesce trace amounts of water into larger droplets in a liquid hydrocarbon stream. It is the first stage in conjunction with the second stage WCT6--P separator cartridge for the separation of two immiscible liquids.

Separator Cartridges WCT6--P Series has a flow path from outside to inside and furnished in the Type 62-CC-2S Liquid-Liquid Coalescer Separator for the separation of two immiscible liquids. The separator filter is hydrophobic allowing oil to pass through while repelling water. It is the second stage in conjunction with the first stage WCT6--R coalescing cartridge.

Filter Cartridges WCC Wound Series has a flow path from outside to inside and furnished in the Type 61V Vertical Liquid Filter for removal of solid contaminants from a liquid process stream. Filter applications vary widely and a range of filter cartridge materials and particle retention sizes are available.

Carbon Canisters WCFL-1122 Series with activated virgin carbon are furnished in the Type 61V-C Vertical Liquid Filter to remove dissolved hydrocarbons and other impurities from amine and glycol processes for the prevention of foaming and reduction of corrosion.