Rainlex PJ013 Pressure Balance Shower Cartridge

“Cartridge for Kohler Pressure Balancing Unit GP500520” has been added to your cart. View cart

Blue and black plastic cartridge with red limit stop square white plastic handle connection with blue rubber seal.

The Rainlex PJ013 cartridge (also known as the PJ013 GP40H02 model) is a plastic, pressure-balance replacement part specifically designed for Rainlex concealed shower systems.

WHAT OUR CUSTOMERS SAY…

“The vacuum breaker on my outdoor spigot failed and Noel's Plumbing was the only placeI could find that had the appropriate mfr. part. I sent a text with photos on Wednesday evening to make sure the part I found was correct. In less than 2 hours later, I had a reply confirming it was the correct part. Placed my order that evening and received the part on Saturday afternoon (about 2.75 days) and my plumbing issue was resolved! I highly recommend - I really appreciated the prompt and pleasant response. ”

-Kimberly S.

04/25/2026

$42.47

The Rainlex PJ013 cartridge (also known as the PJ013 GP40H02 model) is a plastic, pressure-balance replacement part specifically designed for Rainlex concealed shower systems.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

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Stop leaks and restore smooth temperature control with the Rainlex PJ013 Pressure Balance Shower Cartridge. Engineered specifically as a direct replacement part (Model GP40H02), this valve cartridge is the ultimate solution for fixing dripping concealed shower systems and fluctuating water temperatures.

PJ013