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MX ZJA Edge Thermostatic Cartridge Replacement MX ZJA Edge Thermostatic Cartridge ReplacementMX ZJA Edge Thermostatic Cartridge Replacement

MX ZJA Edge Thermostatic Cartridge Replacement

Part Number: MX-ZJA
Price: £143.99
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Product description


MX ZJA Edge Thermostatic Cartridge Replacement

MX ZJA Edge Thermostatic Cartridge Replacement Measurements and Other Information

Total length: 107.28mm (approximately 10.73cm)
Width at widest part: 44.11mm (approximately 4.41cm)
Top spline diameter: 9.4mm
Spline teeth count: 23

Other information:
Number of O-rings: 3
Part number: ZJA
Cartridge type: Shower thermostatic cartridge (temperature cartridge)

MX ZJA Shower Cartridge Compatibility

This shower valve spare part is used in:
– MX Edge Thermostatic Shower Bar
– MX Energy Thermostatic Concentric Valve

– MX Fusion Concentric Shower Valve
– MX Traditional Concentric Shower Valve

– MX Zinc Concentric Shower Valve
– MX Zone Concentric Shower Valve

Frequently Asked Questions: MX ZJA Edge Shower Thermostatic Cartridge

Question: Can you tell me why I need a new cartridge?
Answer: There are indications that the MX ZJA cartridge needs to be replaced, this includes a dripping shower head, weak water flow, and temperature control problems. These happen because the cartridge is either broken or debris and dirt have accumulated in or around the cartridge. For your shower to be up and running as normal for a long time, the cartridge needs to be replaced.

Question: The shower I have to repair is the Atmos Edge. How do I fit in the cartridge?
Answer: Here are the fitting instructions for the MX ZJA thermostatic cartridge in the Edge Concentric Valve:

1. Remove the handle. The screw is at the right side (your left side) of the temperature handle.

2. Remove the stop ring followed by the flow control handle.

3. Slide out the wallplate.

4. Undo the cartridge collar and remove the cartridge.

5. Coat a thin layer of silicone grease on all the O-rings of the replacement MX ZJA thermostatic cartridge. Fit it in the valve and secure it with the cartridge collar.

6. Reassemble the wallplate, the flow handle, stop ring, and temperature handle.

Question: Is the grease really that important?
Answer: Yes, it is important. The grease allows for the new thermostatic cartridge to seal in the valve properly. Should you need the plumbing grease please scroll down to the last section to see the available choices.

Question: The shower is suddenly lukewarm.
Answer: This is due to the cartridge wearing out. The thermostatic cartridge needs to be changed.

Searching for other MX shower spares?
– Please browse through our MX spare parts index.

Need help?
– Please leave us a message through our spare part identifier service. Our in-house spares experts will be more than happy to assist you.
shipping & Returns


  • Delivery of this item is priced as a 'small' packet. UK delivery costs £5.95.
  • For all in-stock spare parts the typical UK delivery timescale is 2-5 working days.
  • If you need a part urgently then we can provide a next-day (delivered Mon-Fri) UK delivery service for all in-stock small parcels ordered before 3.30pm, Monday - Friday.
  • Next day delivery is available to select at an additional charge during the checkout.
  • We delivery WORLDWIDE. For more information about international deliveries, read our delivery page.


  • If you need to return a part then please telephone Di Vapor on 0121 705 0866 with the reasons for the return within 14 days of receiving the goods.
  • For more information please see our terms and conditions.
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