Wilkerson M18-04-CL00B Coalescing Filter 1/2 in Port

Product Description

The WILKERSON M18-04-CL00B is a coalescing filter designed to remove oil aerosols, fine particulates, and liquid water from compressed air lines. Coalescing filtration works by forcing airflow through a fiber media element that causes sub-micron oil droplets to merge and drain away from the airstream, protecting downstream equipment such as pneumatic tools, regulators, and instrumentation. The M18-04-CL00B is built around a 1/2 inch port size and includes an integrated sight glass that allows technicians to monitor the liquid level in the bowl without interrupting service. Weighing 0.71 pounds, it is compact enough for panel or inline mounting in tight mechanical spaces.

Coalescing filters of this type are installed in industrial compressed air systems, HVAC pneumatic control lines, and light manufacturing environments where clean, dry air is critical to equipment performance and longevity. The M18-04-CL00B is suited for both new installations and as a direct replacement unit in existing filter assemblies. It is typically installed downstream of a general-purpose particulate filter and upstream of any pressure regulator or lubricator in a filter-regulator-lubricator setup. Installation is handled by pipefitters, industrial mechanics, or HVAC controls technicians working on air preparation systems.

Key Features

• Coalescing filter media removes oil aerosols and fine moisture from compressed air lines
• 1/2 inch port size fits standard NPT compressed air plumbing
• Integrated sight glass allows bowl-level monitoring without system shutdown
• Compact footprint at 2.36 inches wide by 8.36 inches tall for space-constrained installations
• Lightweight at 0.71 pounds for easy inline or panel mounting

Compatibility

Designed as an OEM-style replacement coalescing filter for compressed air preparation systems requiring a 1/2 inch ported inline filter with sight glass bowl.

Installation Notes

Shut off and depressurize the compressed air line fully before removing or installing this filter. A pipefitter or qualified industrial mechanic should verify thread type and apply appropriate thread sealant to NPT connections per plant standards and applicable plumbing codes. Install with the bowl oriented downward to allow collected liquids to drain properly. Inspect the sight glass and drain the bowl regularly as part of a scheduled air-system maintenance routine.