Phone 800-280-4053 | Text 858-688-1646 | Email support@coventrybrassworks.us

Replacement Parts for Butler Mill and Brassworks Ltd. Exposed 1/2" Thermostatic Shower System

Click a red outlined part for details.

Click image below for parts for valve assembly.


Maintenance Service Pack

Your premium thermostatic shower system contains a sophisticated thermostatic cartridge and components that over time experience wear and tear, corrosion, and build up of mineral deposits which impair their proper functioning.

To ensure continued safe and enjoyable use of your thermostatic shower system, we recommend servicing it about every 15 years. You should replace the thermostatic cartridge, volume control cartridge, both check valves, and both neoprene O rings.

We have assembled these parts into one pack for your convenience.



Size Information


Support Information

Installation Instructions

Parts Diagram

Instructional Videos

Thermostatic Cartridge Calibration Instructions

Thermostatic Cartridge Replacement Tip To replace the thermostatic cartridge, you will need to remove the brass holding nut using a 1-9/32" socket or stem wrench.