Norgren 5578-02 Relieving Repair Kit for R17 Regulator

Product Description

The NORGREN 5578-02 is a relieving repair kit designed to restore proper function to the Norgren R17 series pneumatic pressure regulator. The kit contains the internal components most subject to wear during normal service: a spring, o-rings, stem valve assembly, and a relieving diaphragm. These parts are the primary failure points in a relieving-style regulator, and replacing them as a set returns the unit to factory performance without requiring a full regulator replacement. The kit is appropriate for scheduled maintenance intervals or for reactive repair when a regulator begins to bleed pressure, fail to hold setpoint, or exhibit diaphragm fatigue. Pneumatic technicians and industrial maintenance mechanics are the typical installers.

The 5578-02 is used specifically with the Norgren R17 regulator, a relieving-type pressure regulator found in compressed air and pneumatic control systems across industrial, manufacturing, and automated assembly environments. Relieving regulators are specified where downstream pressure must be actively vented when supply pressure drops below setpoint, making diaphragm and stem valve integrity critical to system accuracy. This kit is appropriate for both preventive maintenance rebuilds and corrective repairs on in-service R17 units.

Key Features

• Includes spring, o-rings, stem valve assembly, and relieving diaphragm — all primary wear components
• Designed specifically for the Norgren R17 relieving-type pressure regulator
• Restores pressure regulation accuracy and eliminates downstream bleed-through
• Single-kit solution reduces parts sourcing time for field and bench repairs
• Sold as an individual kit (package quantity of 1)

Compatibility

Designed for use with the Norgren R17 regulator as specified by the manufacturer.

Installation Notes

Installation should be performed by a qualified pneumatic technician or industrial maintenance mechanic familiar with pressure regulator service. Depressurize and isolate the pneumatic system completely before disassembling the regulator. Inspect the regulator body for damage or contamination before installing the repair kit components, and ensure all seating surfaces are clean and free of debris prior to reassembly. Follow the applicable Norgren service documentation for component orientation and assembly sequence.