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Mizu Bidet

Bidets

Mizu Essential - Cold Water Bidet Mizu Onzen - Hot Water Bidet

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Mizu Zen - Japanese Toilet Seat Mizu Pro - Electric Japanese Toilet Seat

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Installation Guide

Japanese Bidet Installation Japanese Toilet Seat Installation Blog & Tips FAQ
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Guide d'installation

Installez votre kit bidet Mizu en moins de 15 minutes — sans plombier, sans percer, sans outil. L'installation est 100 % réversible.

⏱ 10 – 15 minutes Aucun outil nécessaire Compatible 95 % des WC Installation réversible

Compatibility

Toilet with an exposed cistern (visible lid) — over 95 % of toilets in France
All brands — Porcher, Jacob Delafon, Roca, Geberit, Duravit, Ideal Standard…
Standard 3/8” thread — universal connector included in the kit
Toilet with an accessible shut-off valve (behind or under the cistern)
Wall-hung toilet with concealed water supply — contact us before ordering
One-piece toilet (cistern integrated into the bowl) — contact us before ordering

What's in your kit

Mizu Essentiel — Cold water

  • Bidet nozzle with brackets (cold-water jet)
  • 3/8” metal T-connector
  • Bidet supply hose
  • Spare washers
  • Teflon tape
  • Installation guide

Mizu Onzen — Cold + hot water

  • Dual-inlet bidet nozzle with brackets (cold + hot)
  • 2 × 3/8” metal T-connectors
  • 2 supply hoses
  • Spare washers
  • Teflon tape
  • Installation guide

Installation in 5 steps

1

Shut off the water supply

  • Locate the shut-off valve behind or under the cistern — a small metal or plastic tap, sometimes with a flat or round handle
  • Turn it clockwise until it stops
  • Flush the toilet to empty the cistern
Test: if the cistern no longer refills after flushing, the water is properly shut off.
2

Disconnect the existing hose

  • At the bottom of the cistern you'll find a braided metal hose connecting the shut-off valve to the cistern
  • Unscrew the lower end of the hose (valve side) — counter-clockwise, by hand
  • Keep this hose: it will be reconnected to the T-connector in the next step
Tip: place a towel or cloth under the connectors — a few drops may escape.
3

Install the T-connector

The T-connector is the key part: it fits directly onto the shut-off valve and creates two outlets — one for the cistern, one for the bidet nozzle.

  • Screw the T-connector onto the shut-off valve thread (clockwise), with the supplied washer
  • Reconnect the cistern hose to the top outlet of the T
  • Connect the supplied bidet hose to the side outlet of the T
  • Tighten by hand only — no wrench, or you risk cracking the washers
Washers: each connector comes with a rubber washer. Make sure it's properly seated before screwing on.
4

Fit the bidet under the seat

  • Position the bidet under the front rim of the bowl, using the brackets included in the kit
  • Tighten the brackets so the unit is stable and doesn't move sideways
  • Check the nozzle is aligned with the centre of the bowl
  • Connect the end of the bidet hose to the nozzle inlet
5

Turn the water on and test

  • Reopen the shut-off valve (counter-clockwise), gradually
  • Wait for the cistern to fill completely
  • Visually inspect each connector (T, cistern hose, bidet hose, nozzle inlet) — no drop should appear
  • Operate the bidet control: the jet should start immediately
If everything is dry after 2 minutes and the jet is working, the installation is perfect.
Leak? Shut off the water, remove the affected connector, check the washer is properly centred, re-tighten slightly harder. Add Teflon tape if needed.

Mizu Onzen — Hot-water connection

The Mizu Onzen needs a second T-connector on your hot-water supply. This source is usually under the sink, or on a nearby wall outlet. First complete the 5 steps above for the cold-water circuit, then follow these extra steps.

A

Shut off the hot-water supply

  • Locate the hot-water shut-off valve under the sink or on the wall
  • Close it by turning clockwise
B

Install the second T-connector on the hot water

  • Disconnect the existing hot-water hose on the valve side
  • Screw the second supplied T-connector onto this valve
  • Reconnect the existing hose to the top outlet of the T
  • Connect the second bidet hose to the side outlet
C

Connect to the Mizu Onzen and test

  • Connect the end of the hot-water hose to the matching inlet on the Onzen nozzle (marked H or red)
  • Reopen both shut-off valves
  • Check there are no leaks on any connector
  • Test the cold and hot jets separately
Distance: the supplied hot-water hose is 50 cm long. If your hot source is further away, contact us for an extension.

Questions fréquentes

Ai-je besoin d'un plombier ou d'outils spéciaux ?

Non. Tout se visse à la main. Aucune soudure, aucun perçage, aucune modification permanente. Plus de 95 % de nos clients installent seuls en moins de 15 minutes.

Est-ce compatible avec mon WC ?

Le raccord T est au standard 3/8", compatible avec la quasi-totalité des WC à réservoir apparent en France. En cas de doute, contactez-nous avant de commander.

J'ai une fuite après installation, que faire ?

Coupez l'eau, démontez le raccord, vérifiez le joint, re-serrez. Si la fuite persiste, enroulez 2–3 tours de ruban téflon sur le filetage avant de revisser.

Combien de temps prend l'installation réellement ?

Entre 10 et 15 minutes.

Le Mizu Onzen fonctionne-t-il si mon lavabo est loin des WC ?

Le flexible eau chaude fourni mesure 50 cm. Si la source est trop éloignée, optez pour le Mizu Essentiel ou demandez-nous une extension.

Puis-je désinstaller facilement ?

Oui — moins de 5 minutes. Débranchez les flexibles, retirez le raccord T, reconnectez le flexible d'origine. Aucune trace.

La pression d'eau est-elle suffisante ?

Le kit fonctionne entre 0,5 et 8 bars — soit la pression standard de tous les réseaux domiciliaires français.


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