Wilkerson M28-03-CH00B Coalescing Filter 3/8 Port

Product Description

The WILKERSON M28-03-CH00B is a coalescing filter designed to remove oil aerosols, fine particulates, and water droplets from compressed air lines. Coalescing filtration works by forcing contaminated air through a dense filter media that causes sub-micron oil and moisture particles to merge into larger droplets, which then drain to the bowl for removal. This unit features a 3/8 inch port and includes a sight glass for visual monitoring of liquid accumulation in the bowl. It is a standard service component in compressed air treatment systems and is installed by HVAC technicians, pipefitters, pneumatic systems technicians, and industrial maintenance professionals.

The M28-03-CH00B is suited for compressed air applications where clean, dry air is required upstream of pneumatic tools, control valves, instrumentation, or air-operated equipment. The 3/8 inch port size fits common supply line configurations in light industrial and commercial settings. It serves as a replacement filter or a new installation component in air preparation assemblies that typically include a regulator and lubricator downstream.

Key Features

• Coalescing filter media removes oil aerosols and fine moisture from compressed air
• 3/8 inch port size for direct integration into standard compressed air lines
• Includes sight glass for visual inspection of bowl liquid level without disassembly
• Compact footprint: 2.87 inches wide by 9.25 inches tall
• Lightweight at 1.1 pounds for easy handling and installation in tight spaces

Compatibility

Designed as an OEM-style replacement coalescing filter for compressed air treatment systems requiring a 3/8 inch ported filter body with sight glass.

Installation Notes

Installation should be performed by a qualified pneumatic systems technician or pipefitter. Depressurize and isolate the compressed air line completely before removing or installing any filter component. Follow applicable plumbing and pneumatic system codes and the equipment manufacturer guidelines for thread sealant and torque practices on threaded port connections. Ensure the bowl drain is functional and the sight glass is unobstructed after installation before returning the system to service.