Baker Hughes Self Operating Pressure Regulators 173 Series

The required maintenance interval varies depending on application. The user must establish a suitable interval based on the operating conditions. Prior to disassembly, remove all system pressure from the regulator.

Before starting the above operation, make sure the recommended spare parts are available (refer to the parts list indicated in Figures 1 through 5).

The diaphragm may require replacement without having to make other repairs. If the regulator is easy to access and isolate, it can be replaced while leaving the regulator installed in the piping. In this case, isolate the regulator and vent all pressure.

To prevent accidental pressurization while working on the regulator, make sure that the isolation valves are locked. Remove the actuator following the instructions in section 3.4.1.2.

Replace and install the diaphragm and reassemble the actuator as shown in section 3.4.2.4. Check calibration once more when the regulator is returned to service.;

The required maintenance interval will vary depending on application. The user must establish a suitable maintenance schedule depending on the operating conditions. Prior to disassembly, remove all system pressure from the regulator. Before starting the above operation, make sure the recommended spare parts are available (See the parts listed in Figures 9 and 10).

(Refer to Figures 9 and 10) All of the components are now ready to be inspected. Replace any worn items. Clean all parts.

Pay particular attention to the condition of the disc of the plug (24), both elastomeric and metal, and the seat.

If the seat is worn, it may be able to be restored by lapping using a metal disc and abrasive paste.

The diaphragm should be replaced if it shows any damage. The same applies to the Teflon diaphragm protector (if included).

Gaskets should not be reused.; If preferred, the regulator may be returned to an authorized Baker Hughes repair center to be reconditioned.

The diaphragm may require replacement without having to make other repairs. If the regulator is easy to access and isolate, it can be replaced while leaving the regulator installed in the piping. In this case, isolate the regulator and vent all pressure.; To prevent accidental pressurization while working on the regulator, make sure that the isolation valves are locked. Remove the actuator following the instructions in section 4.5.2.

Replace and install the diaphragm and reassemble the actuator as shown in section 4.5, 4.5.3 and 4.5.6.

Check calibration once more when the regulator is returned to service.;