Summary

Bristan ST-PM-B4-AS5 Cartridge for Prism Valves - Does not include shroud or retaining nut.

Bristan Spare Part Technical Details:

Frequently Asked Questions: Bristan Prism Cartridge ST-PM-B4-AS5

Question: Can I use this cartridge in another tap?

Answer: It’s hard to tell if you can use the Bristan Prism cartridge (ST-PM-B4-AS5). We refer you to our Find a Part page, where you can contact us with a photo of your tap or the cartridge you need to replace. We will do our very best to get back to you within 1 working hour, with the replacement cartridge you need.

Question: Bristan Prism leaking from the handle. Do I have to buy a new cartridge?

Answer: The cartridge is the problem if the valve seat is still in optimal condition. Installing a new Bristan ST-PM-B4-AS5 cartridge can stop the leak.

Question: Do you have a guide on how to remove the cartridge?

Answer: Here are the general steps on single lever cartridge removal and replacement:

1. Remove the screw cap from the back of the Bristan Prism handle.

2. Use a 2.5mm Allen key to undo the grub screw. Pull the handle up to remove.

3. Remove the shroud or retaining nut (if any).

4. Remove the old cartridge.

5. Apply silicone lubricant on the O-ring of the replacement Bristan ST-PM-B4-AS5 cartridge.

6. Seat it in the valve seat making sure the locating pins are in place. This will prevent the cartridge from moving.

7. Reassemble the handle.

Is your tap the Bristan Prism PM BAS C?

• ST-PM-B4-AS5EB is the replacement cartridge.

We have many Bristan spare parts available ranging from different shower cartridges to seal kits and shower valves.

• Should you need help or have any questions on spare parts (shower, bath, spa, or kitchen), please send us a message or use our Find a Part service (link above).