JKC
Installation & Care Guide

Metropole Flush Valve Piston Kit – Jaguar-Type 32mm Brass

Follow along and check off each step as you go — most customers finish in about 15 minutes.

~15 minutes
9 simple steps
No power tools required
Model JKC-1090
Step 0

Before You Start

Tap each item as you gather it — a couple of minutes of prep now saves a return later.

Tools You'll Need

What's In The Box

Verify before you start: Compare your old piston kit's overall height (100mm), collar/housing diameter (32-37mm), and knob-fitting head size (7.75mm) against this kit before starting. If anything doesn't match, contact JKC Emart support before fitting.
Installation

Step-by-Step Fitting

This kit fits inside your existing Jaguar-style Metropole flush valve body — you're replacing the internal piston and cap, not the whole valve.

Hands full? Have the steps read out loud instead.
0 of 9 steps complete

Nice work — all steps complete!

Your Metropole flush valve is ready to go — test the flush a few times to be sure everything's working smoothly.

Turn Off the Water Supply
~1 min
Locate the water supply to your flush valve and turn it off completely before starting any work.
Remove the Wall Flange, Glassy Socket & Push Button
~2 min
Unscrew and lift away the wall flange plate, then remove the glassy socket, followed by the push button, to expose the internal assembly.
Remove the Lock & Spring
~1 min
Take out the lock and the spring sitting beneath it to access the piston kit.
Unscrew the Old Piston Kit with a Box Spanner
~2 min
Fit the box spanner onto the piston kit collar and unscrew it to remove the old kit from the valve body.
Unscrew the Old White Cap — Turn Clockwise to Remove
~1 min
Use the piston kit rod to unscrew the white cap.
Take care: This cap removes by turning clockwise, not counterclockwise — turning it the usual way will tighten it further instead of loosening it.
Clean the Concealed Valve Body
~2 min
With everything removed, clean out the concealed valve body thoroughly before fitting the new parts.
Fit the New Piston Kit & New White Cap
~2 min
Fit the new piston kit into the valve body, then fit a brand-new white cap — never the old one.
Take care: Always install a new white cap together with the new piston kit. Reusing the old cap is the most common cause of leaks returning after 3-4 months.
Reassemble the Spring, Lock, Push Button, Glassy Socket & Wall Flange
~3 min
Follow the same process in reverse: refit the spring and lock, then the push button, glassy socket, and finally the wall flange plate.
Turn On the Water Supply & Test the Flush
~1 min
Turn the water supply back on and test the flush a few times, checking for smooth operation and no leaks.
Points To Take Care Of

Do's & Don'ts

The most common fitting mistakes — and how to avoid them.

Do

  • Turn off the water supply completely before starting
  • Verify your old piston kit's dimensions against this kit before fitting
  • Always fit a brand-new white cap together with the new piston kit
  • Keep your old parts until you've confirmed the new kit is fitted and working
  • Clean the concealed valve body thoroughly before fitting the new kit
  • Hand-tighten the collar and cap firmly, without overtightening

Don't

  • Don't reuse the old white cap — the most common cause of leaks returning within a few months
  • Don't force the white cap counterclockwise — it removes by turning clockwise
  • Don't overtighten the box spanner on the collar
  • Don't skip cleaning the valve body before fitting new parts
  • Don't discard your old parts until the new kit has been tested and confirmed leak-free
  • Don't mix in parts from a different Metropole system size
Quick Reference

Troubleshooting

If something doesn't feel right after fitting, check here first.

SymptomLikely CauseWhat To Do
Leaking again after fitting the new kitOld white cap was reused instead of the new oneFit a brand-new white cap together with the piston kit — this is the most common cause
Push button feels stiff or doesn't spring backSpring or lock not seated correctly during reassemblyRecheck that the spring and lock are fully seated before refitting the push button
New kit doesn't seem to fit properlyDimension mismatch with your existing valve bodyCompare your old part's measurements against this kit's dimensions, and contact JKC Emart support if unsure
Weak or inconsistent flush after installationConcealed valve body wasn't fully cleaned of old debris/scaleTurn off water, remove the kit again, and clean the valve body thoroughly before refitting
White cap won't come off during removalAttempting to turn it counterclockwise instead of clockwiseUse the piston kit rod and turn the cap clockwise to remove it
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