Caroma Toilet Parts

What this collection holds

This page lists the visible parts of a Caroma toilet: dual flush plates and buttons for concealed cisterns, round cistern flush buttons, toilet seats and seat hinge caps. It does not list inlet valves, outlet valves, washers or cistern lids. If your fault is inside the cistern, the section below on symptoms will tell you which part is likely, so you can ask us or a plumber for the right one.

For whole toilets, see Caroma toilets. The parts here match specific ranges, so the first step is always to know which toilet you have.

How to identify your Caroma toilet

Start with the cistern type. An Invisi Series II is a concealed cistern, a Quietflow is a close coupled cistern, and a Water Wafer is a pneumatic wall hung cistern. The model name or number is most often stamped or printed on the inner wall of the cistern. Lift the lid straight up and set it on a towel, because some models print the details on the underside of the lid and others carry a sticker on the cistern body. On older installs the details may be on the back of the pan or behind the seat. If nothing is visible, the shape and layout of the flush button helps narrow it down. A photo of the cistern, the bowl and any markings is enough for us to confirm the model.

Back entry or bottom entry, and the outlet valve tower

Identification is the most important first step before buying parts. You only need to match your toilet model if you are replacing the entire unit, because most Caroma and Fowler models use universal components for spare parts. To tell the inlet type, look at the hose. With a back, or rear, entry the water hose is hidden inside the cistern and enters from the rear left hand side, which is common in wall faced and modern designs. With a bottom entry a visible hose connects from underneath, usually on the bottom right hand side, and a bottom inlet valve has no hose inside the tank. Check your setup before ordering an inlet valve.

The mechanical dual flush outlet valve is a grey and white tower with an adjustable float, which in most modern Caroma cisterns clips into a base. If the base is in good condition you may only need to swap the tower, and if the base leaks the cistern must be removed.

Recognising a pneumatic wall hung cistern

You likely have a Caroma Water Wafer pneumatic cistern if the flush plate is satin stainless steel with four corner screws and two round buttons, with blue pneumatic tubes running to a cistern often concealed in the ceiling or wall. The parts that commonly fail are the outlet valve seal, the pneumatic mechanism, the inlet valve and the button seals. The original push plate is no longer available, though a larger retrofit plate can be fitted. The Invisi Series II plates on this page are for the Invisi Series II cistern and not for a Water Wafer. If your plate matches the description, photograph it and ask us before you order.

Which part matches the symptom

A cistern that fills slowly or keeps running usually needs a new inlet valve. Water dripping into the bowl usually points to the outlet valve seal, and a weak flush usually points to the outlet valve. Repair kits can fix a leak at the base of the cistern without replacing the whole unit. Replace the cistern if the pan or cistern is cracked or several parts fail together. Fitting the wrong part can leave a cistern running, weaken the flush or use more water than it should.

Not every part fits every model. Inlet valves can work across several models, but seats and outlet valves are usually specific to a model, so confirm the fit before you order. Cleanflush toilets need a seat sized for that range, and the Urbane II and Liano models need their own compatible parts. Seals loosen and parts wear over time, so a toilet can start using more water without any obvious sign, and a check-up may be worthwhile.

Flush plates and buttons

The flush plate is the only part of a concealed cistern you see, and it is also the access point to the cistern behind it. The Invisi Series II plates here come in round, oval and rectangle shapes, in metal finishes that match tapware. The round plate is 210mm by 110mm and 5.5mm thick, with concealed fixings. It can be mounted on the wall above the toilet or on a benchtop, and it gives full service access to the cistern, so servicing does not mean removing tiles. Raised care buttons are also available. See Caroma concealed toilet buttons and the Invisi Series II collection.

The round cistern flush buttons are for exposed cisterns, and replacing one is a quick job. The Luna round cistern buttons come in matte black, brushed nickel and brushed brass, and they can only be used with Luna toilet suites. A matching finish keeps the room consistent. For the suites those buttons fit, see Caroma Luna Cleanflush toilets.

Fitting a round cistern button

Fitting a round cistern button takes four steps, in the same order for the Urbane II style button and the Luna button. Screw the nut on the button assembly from underneath the lid. Fit the button assembly into the cistern lid with the half flush line to the left. Check the orientation of the button, so the HF and FF markings are perpendicular to the back wall, and hand tighten the nut fully. Never use abrasive or harsh chemical cleaners on the button or lid, and wipe with warm soapy water to maintain the decorative finish. The Luna button is a dual flush round bezel and button, and the other is a wall faced close coupled flush button, so use the instructions that match your button.

Finishes and what is in the box

The Invisi Series II round plate comes in brushed brass and brushed nickel with a small face and a line indication between the two buttons, and in the Metallics collection in matte black, with the Neutral collection adding white and grey tones. Brushed brass is made to match the Caroma brushed brass tapware ranges, so the visible hardware belongs with the taps. The round plates are 210mm long, 110mm high and 5.5mm thick, in a PVD finish. Each plate is a single flush plate and buttons, with the installation instructions available to download.

The Luna round cistern flush button comes in a single button with its instructions, and the satin black version is a plastic button that suits the Profile 4, Contura, Geo and Care 800 and Universal cisterns. Hinge caps come as one pack of toilet seat hinge caps, and the seats come with a fixing kit. None of these parts includes the cistern or its internal valves, so confirm what you already have before you order. Pairing the plate or button finish with the hinge caps keeps the visible parts of the toilet consistent from the lid to the seat.

Seats and hinge caps

Each seat suits specific pans, so check the compatibility line for your pan before you order. The Family D shape, Xena, Liano, Profile and Trident seats are here, with a Profile standard seat in plastic hinge. Hinge caps change the finish of the hinge without replacing the seat. The Urbane, Contura and Riviere caps suit Contura II, Urbane II and Luna Slim toilets and not the Urbane II Luxe, and the Liano, Arc and Xena caps suit Liano and Luna suites. See Caroma toilet seats for how to measure and fit a seat.

Fitting a quick release seat

The Xena soft close seat and the Family D shape seat have a quick release stainless steel hinge. Fit the rubber pads to the underside of the two hinge mounting posts, insert the elongated washer and fasten loosely to the pan. Align the hinge posts with the holes in the seat assembly and push down until it clicks. The seat comes off by pushing the button at the rear, taking care not to move the hinge posts. Fully tighten the bolts with the hex key supplied, then slide the stainless steel covers over the hinge posts and fit the seat.

For bolts through a pan hole, push the metal toggle through, realign the handles and pull upwards while pushing the locking bush down, then break off the handles flush and trim the excess if required. Never use abrasive or harsh chemical cleaners, and wipe the seat with warm soapy water to maintain the surface finish.

Setting the water level in a close coupled cistern

With the water on and the cistern stop valve open, check the operation of the mechanisms and the valve. Then turn the float arm adjustment screw clockwise or anticlockwise to bring the water to the level mark inside the cistern. The inlet valve fitted as standard has a line strainer, and installing the cistern without the strainer can damage the inlet valve and lead to cistern malfunction. For back entry, the cistern stop valve fits to the half inch BSP nipple in the wall, and the flexible hose must not be submerged. This is plumbing work, but it shows that a cistern that fills too high or too low is often an adjustment.

The pneumatic cistern outlet valve and its seal

The Invisi II outlet valve is the part the plates and buttons operate. Servicing is only required where outlet valve operation is faulty. If the outlet valve leaks, inspect the seal for damage and replace it if necessary. If the cistern short flushes, check that the pneumatic tubes are pushed into the bridge and the buttons. For any other issue, consult a plumber. Spare part kits exist for the outlet valve, a complete 4.5 and 3 litre outlet valve and a pack of diaphragm seals. These parts sit inside the cistern behind the plate, which is why a plate and a spare part are different things to order.

Do it yourself or call a plumber

Replacing a flush button on an exposed cistern, or a seat, is a straightforward job. Work on the flush valve, the inlet valve or the drain connection should go to a licensed plumber, and so should anything connected to the water supply. When you describe the job to us, give the cistern type, the model number and the symptom.