Parker R46-03AK Miniature Air Regulator 3/8 Npt 150 Psi

Product Description

The PARKER R46-03AK is a miniature compressed air regulator designed to reduce and maintain downstream pressure in pneumatic systems. It accepts supply pressures up to 150 psi and delivers a regulated output range of 0 to 25 psi, making it well suited for low-pressure pneumatic control applications. The port size is 3/8 inches NPT, and the compact body measures 2.06 inches wide by 3.43 inches high. Constructed with a plastic body, the unit is lightweight at 0.38 pounds and handles operating temperatures from 40 degrees F to 125 degrees F. Licensed HVAC technicians, plumbers, and industrial maintenance technicians install this type of regulator in compressed air lines requiring stable, reduced outlet pressure.

This regulator is intended for use in miniature pneumatic circuits where space is limited and precise low-pressure regulation is required. It is rated for water as a fluid type in addition to compressed air, broadening its potential application in light industrial and process control settings. The unit does not include an integral pressure gauge, though a 1/4 inches gauge port is provided for field installation of a gauge if monitoring is needed. No relief function is incorporated, so downstream pressure relief must be addressed separately in the system design. Typical installations include instrument air panels, small pneumatic actuators, and light-duty compressed air tools requiring output pressures within the 0 to 25 psi range.

Key Features

• Miniature form factor: 2.06 inches wide by 3.43 inches high for space-constrained installations
• 150 psi maximum supply pressure with 0 to 25 psi regulated output range
• 3/8 inches NPT port size for standard compressed air line connections
• 1/4 inches gauge port thread for optional downstream pressure monitoring
• Rated for both compressed air and water service
• Lightweight plastic body at 0.38 pounds

Compatibility

Designed as an OEM-style miniature air regulator for compressed air and water service lines utilizing 3/8 inches NPT connections and requiring regulated output pressures of 0 to 25 psi at supply pressures up to 150 psi.

Installation Notes

Installation should be performed by a qualified technician familiar with compressed air system safety practices. Depressurize and lock out the air supply before installing or servicing the regulator. Apply thread sealant appropriate for pneumatic service to all NPT connections and verify there are no leaks before returning the system to service. If a pressure gauge is required, install it at the 1/4 inches gauge port using a compatible fitting rated for the system pressure.