Deva thermostatic shower mixer temperature handle came off — unsure how to reassemble

[azizurrahman]

Hi everyone,


I have a Deva thermostatic bath/shower mixer tap and the temperature control handle became loose and eventually came off completely.


After removing the handle, I found:

• a brass splined spindle
• a white plastic temperature limiter ring
• a thin grey spacer ring

I’m now unsure:

• what order these parts go in
• which direction the white limiter ring should face
• whether the thin grey ring should sit flush against the mixer body
• why the handle will not fully push back on and sit flush

The handle currently either:

• sits slightly proud from the mixer body, or
• doesn’t align properly when tightened

I’ve attached photos of:

• the exposed spindle
• the white limiter ring orientation
• the grey spacer ring
• the partially assembled handle

Could someone explain the correct assembly order/orientation and whether this sounds like:

• incorrect limiter ring positioning,
• a spacer issue,
• or worn splines inside the handle?

Thanks