Wilkerson R21-03-000 Air Regulator 3/8 Npt 300 Psi

Product Description

The WILKERSON R21-03-000 is a dial air compressed air regulator designed to control and maintain downstream pressure in compressed air systems. Part of the R21 series, it accepts inlet pressures up to 300 psi and delivers a regulated output range of 5 to 160 psi, making it well suited to precision pressure control in pneumatic lines. The body is zinc construction, built for durability in industrial and commercial service environments. A built-in relief function vents excess downstream pressure automatically. Licensed pneumatic system technicians and industrial maintenance mechanics install this regulator as part of air preparation assemblies on production floors, service bays, and equipment rooms.

This regulator is used in compressed air distribution systems where stable downstream pressure is required. Typical applications include pneumatic tool supply lines, spray finishing equipment, process control instrumentation, and general industrial air circuits. With a maximum air flow of 180 CFM and a 3/8 inch NPT port, it fits mid-size compressed air lines common in light-to-medium industrial and commercial settings. The dial air design allows quick, visible pressure adjustment at the point of installation. A 1/4 inch gauge port thread is included for adding a pressure gauge if monitoring is required.

Key Features

• Dial air adjustment for fast, direct pressure setting in the field
• Regulated output range of 5 to 160 psi to match downstream equipment requirements
• Handles maximum supply pressure of 300 psi
• Maximum air flow of 180 CFM suits mid-size pneumatic systems
• Integral relief function automatically vents excess downstream pressure
• 1/4 inch gauge port thread allows field addition of a pressure gauge
• Zinc body construction for lightweight durability in industrial environments

Compatibility

Designed as a direct-fit compressed air regulator for pneumatic systems requiring a 3/8 inch NPT port with a maximum supply pressure of 300 psi. Part of the WILKERSON R21 series.

Installation Notes

Installation should be performed by a qualified industrial maintenance mechanic or pneumatic system technician. Depressurize and lock out the compressed air supply completely before installing or removing the regulator. Apply thread sealant appropriate for compressed air service to all NPT connections and torque fittings per fitting manufacturer recommendations. Verify downstream pressure with a calibrated gauge after installation before returning the system to service.