Vittoria radiators: dimensions, connection and outlet height – what you need to know before installation

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Vittoria taps: dimensions, connections and outlet height – comprehensive guide before installation

When a customer orders a new Vittoria tap, it doesn't always go smoothly just because they've chosen a nice model – a bigger problem arises when, after unpacking, they find that the thread doesn't fit, the outlet is too low or too high, or the wall connections are in completely different places than the new tap expects. From my own experience, I can say that more than half of the problems during tap installation are not caused by poor installation, but by poor preparation. And preparation starts much earlier than you pick up a wrench – it starts with proper measuring, understanding the dimensions and understanding what a specific tap needs.

This article therefore focuses on technical parameters that are key before buying and installing Vittoria taps: dimensions and spacing of connections, types of threads and connections, outlet heights for different types of taps and practical scenarios in which these parameters must match each other. If you are also interested in how to choose the right type of tap, I recommend the article How to choose Vittoria taps – what to focus on before buying, where design and material aspects are also addressed.

Why tap dimensions are so important – and why they are often forgotten

A tap is not just a faucet. It is a precise mechanical assembly that must physically fit into a specific installation location. This location has fixed dimensions – the distance between the connections, the distance from the wall, the depth of the embedded piping, the height from the floor or from the sink surface. If the new tap does not meet these values, you have a problem that is not easily solved.

In practice, I come across three most common situations:

The customer replaces an old tap with a new one – here it is crucial that the new tap has the same or compatible connection dimensions and the same spacing. If the old piping cannot be adapted without reconstruction, the new tap must fit.
The customer is renovating the bathroom – here there is more room, the customer can adapt the position of the piping, but they still need to know what values to set when embedding the pipes into the wall.
The customer is installing a tap in a new apartment or house – seemingly the easiest case, but even here it happens that the builder makes the piping "by eye" and the tap fits only with great effort.

In all three cases, the rule applies: the more you know about the dimensions in advance, the fewer problems you will have during the actual installation.

Types of Vittoria tap connections – threads, adapters and supply hoses

Vittoria taps are connected to the water supply through threaded connections. It is a standardized system based on European standards, so you do not encounter exotic exceptions during standard installation. Despite this, there are several important details that need to be known.

G 1/2" threads – the absolute standard for basin taps

The vast majority of Vittoria basin taps use connections with an external G 1/2" thread (BSP – British Standard Pipe). This is a thread with a diameter of about 20.9 mm and a pitch of 14 threads per inch. Standard supply hoses are screwed onto this thread, which have the other end either the same thread or a thread for screwing onto the valve (also usually G 1/2").

Important detail: G 1/2" is a nominal dimension, not the actual thread diameter. The designation comes from the history of the British pipe system and is referred to by all manufacturers including Vittoria during standard purchase.

G 3/4" connections – for bath taps and larger flow rates

Vittoria bath taps, or taps with a larger water flow, may have G 3/4" connections. These are physically larger (external thread diameter about 26.4 mm) and allow a larger water flow. When installing a bath tap, always check what thread your existing piping has – and if it is G 1/2", a reducing piece or piping modification is required.

Supply hoses – flexible or rigid, what length?

Most Vittoria taps are supplied with supplies (so-called flexible hoses or direct supply). Standard lengths are 30 cm, 40 cm or 50 cm, but the exact length depends on the distance between the piping connections and the point where the hoses are screwed onto the tap. Typical wall-mounted basin taps have the connection outputs directly under the tap, while the piping connections in the wall are lower or behind the basin – therefore, the supply hoses are usually 35–45 cm long.

Corner valves and straight valves – what is mounted at the tap

At the end of the piping in the wall is a thread (external or internal G 1/2" or G 3/4"). A shut-off valve is screwed onto this thread – most often a corner valve (90° elbow, when the piping comes out of the wall horizontally) or a straight valve (when the piping comes out of the wall or floor vertically upwards). A corner valve is standard for most built-in bathroom piping in the wall. A straight valve is used less often, for example, with embedded piping under the floor.

A hose connection comes out of the corner valve leading to the tap. The length of this hose must correspond to the distance between the valve and the lower part of the tap – therefore, it is important to measure this before buying the tap or at least before ordering the hoses.

Connection spacing – a key dimension that many overlook

Connection spacing (English "centre distance") is the distance between the centres of the two inlet openings of the tap – that is, between the cold and hot water. This number must match the distance between the corner valves (or piping outlets) in the wall.

Standard spacing 150 mm – European standard

The European standard for most wall-mounted bathroom fittings specifies a spacing of 150 mm (from axis to axis, i.e. between the centre of the left and the centre of the right inlet). This value is absolutely dominant in the bathroom sector. Vittoria taps are designed to work with this spacing – and the supply hoses have a sufficient tolerance range (usually 100–170 mm), which allows minor deviations in the piping without the need for reconstruction.

Problems arise in older buildings where the piping was either not installed according to this standard (I have encountered spacing of 120 mm, 130 mm, or even 100 mm in apartments from the 50s–70s), or where the builder installed the piping "rough-in" and the distance deviated from 150 mm by 10–20 mm. In such cases, there are two solutions: flexible hoses with greater stiffness and a more flexible joint (which tolerate a larger deviation), or a physical reconstruction of the angle valves using angled extensions.

When the spacing doesn't match – practical procedure

If you find that your spacing differs from 150 mm, there is no need to panic. The procedure is as follows:

Measure the actual center-to-center distance of the angle valves (or shut-off valves).
Check whether the valves are oriented correctly (both should point in the same direction, usually perpendicular to the wall).
If the difference is within 20–25 mm from 150 mm, standard flexible hoses usually handle it.
If the difference is greater or the piping is completely different, a piping reconstruction or the use of a special transition piece is required.

Spout height – why it is one of the most important parameters

Spout height (in English, "spout height") is the distance from the mounting plane of the basin (sink or wall) to the end of the spout, i.e., the place where the water flows out. This parameter affects comfort, aesthetics, and also practical functionality – a spout that is too low causes water to splash on the hands before it reaches the sink, while a spout that is too high can cause water to splash outside the sink.

Spout height for basin taps

Standard Vittoria basin taps with stand mounting have a spout height in the range of 100–160 mm. A typical value for a standard sink is around 120–140 mm. This height is sufficient for a standard sink with a basin depth of 150–180 mm – the water falls into the center of the sink and does not splash.

If you have a shallow sink (for example, a countertop or modern ultra-thin ceramic sink with a basin depth of only 80–100 mm), the standard spout height may be too high and the water will splash. In such cases, a tap with a lower spout height (around 80–100 mm) or with an adjustable spout is suitable.

Conversely, for deep sinks (laboratory, kitchen, or large-format sinks), a tap with a higher spout height (160–200 mm or more) is suitable so that the spout is above the top edge of the sink.

Spout height for sink and kitchen taps

Kitchen taps – although they differ from bathroom taps – operate on the same principle. Historically, the spout height for kitchen taps was around 150–200 mm, while modern high kitchen taps reach spout heights of 200–300 mm. For a kitchen sink, the length and flexibility of the spout are also important.

Spout height for bathtub taps

Shower and bathtub taps are mounted on the wall or on the edge of the bathtub and their outlet valve directs water down into the bathtub. A different value is key here – the mounting height of the tap above the top edge of the bathtub. The recommended mounting height for a wall-mounted bathtub tap is 150–200 mm above the top edge of the bathtub. If the tap is mounted too low, water reaches the tap during filling, which is unhygienic and can damage the tap due to long-term immersion.

Mounting height of the tap from the floor – important for wall mounting

For wall-mounted shower and bathtub taps, not only the spout height is important, but also the overall mounting height of the tap from the floor. Recommended values are based on ergonomics and standards:

Sink tap – wall mounting: connections usually at a height of 300–500 mm from the floor (depends on the sink height), tap at a height of about 50–100 mm above the top edge of the sink
Shower tap: wall connections at a height of 1 000–1 200 mm from the floor (for an average adult user), shower drain (if combined) at a height of about 200 mm from the bottom of the shower area
Bathtub tap: connections at a height of about 700–900 mm from the floor (depends on the height of the bathtub edge), outlet valve at least 150 mm above the top edge of the bathtub
Kitchen sink tap: connections at a height of about 400–550 mm from the floor (depends on the height of the kitchen line and the under-sink cabinet)

These values are not absolute – each project may have different requirements. For example, a children's bathroom, a bathroom for the disabled, or a bathroom with atypical equipment may require different heights. Therefore, always carefully consider the equipment you plan to use before closing the wall (during renovation), and adjust the piping accordingly.

Mounting hole – dimensions of the hole in the sink or worktop

A stand-mounted tap (i.e., one that is mounted directly into the sink or onto the worktop) passes through a hole (mounting hole) in the sink or worktop. The standard diameter of this hole is 35 mm, or 32–38 mm. Vittoria taps are designed for this standard size.

Some sinks have one hole, others have three holes (for three-hole taps or combined sets: tap + soap dispenser + boiler tap). Therefore, always check how many holes your sink has and what their diameter is when purchasing a tap.

The thickness of the material at the mounting location is also important. Vittoria taps have a special mounting system under the head (usually a plastic or metal slide with a screw) that holds the tap in the hole. This system is designed for a maximum material thickness – usually 30–55 mm. If you install a tap into a thicker marble or granite worktop, it is necessary to use extended mounting screws or a special mounting kit.

Outlet – straight, swivel or pull-out? What affects usability

The spout (outlet) of the tap is another dimension that is often overlooked when choosing a tap. Its length and direction influence exactly where the water falls in the basin.

Spout length and reach

The length of the spout (from the axis of the tap body to the end of the spout) ranges from 80 mm for compact taps to 200 mm or more for kitchen or industrial types. For a standard bathroom basin, an ideal spout length is 100–140 mm, which ensures that the water falls into the center of the basin and not on the edge.

Too short a spout in a deep basin will cause the water to run down the side of the basin rather than directly down – which is uncomfortable and causes limescale on visible surfaces. On the other hand, a spout that is too long may extend too far into the basin, which is unsuitable for a shallow basin.

Swivel spout – when is it an advantage

Some Vittoria taps have a swivel spout, meaning the spout can be turned into various positions (for example, 120° left/right). This is advantageous for double basins (where one tap serves both basins), corner installations, or kitchen basins, where you need to reach different parts of the work surface.

Hot and cold water – which inlet is left and which is right?

This is one of the most classic sources of confusion. In the European standard, the following applies: the left inlet is for hot water (HW), the right inlet is for cold water (CW). This is valid when looking at the tap from the front.

Why is this important? Because the cartridge mechanism of the tap is designed for a specific orientation – if hot and cold water are connected in the opposite direction, the direction of the handle rotation does not match intuitive expectations (right = warmer, left = colder). In addition, some taps have different construction features (stops, thermal safety devices) that assume correct connection of the sides.

In practice, it sometimes happens that in older apartments, the plumbing is connected in the opposite way or is routed differently than expected. In such a case, the correct solution is to replace the connections at the corner valves, not to turn the tap around.

Wall thickness and depth of installation for wall-mounted taps

If you are installing wall-mounted Vittoria taps (for example for a shower or bathtub), it is important to know not only the height of the connections, but also the depth of their installation into the wall. Wall-mounted taps have so-called rosettes (decorative rings), which cover the place where the outlet passes through the wall. These rosettes must sit on a flat surface of the wall and must be larger than the hole in the wall.

The depth of the connection (from the surface of the wall to the axis of the outlet thread) must match the length of the connecting thread of the tap. If the outlet is embedded too deep, the tap thread may not reach. If it is embedded too shallow, the tap may not sit flush. The recommended depth depends on the specific model of the tap, but generally ranges from 15–25 mm from the surface of the wall to the center of the thread.

Another thing – rosettes are mostly designed for flat surfaces. If you have tiles with a pronounced texture or uneven grout exactly where the rosette is, leaks may occur. In such a case, it is advisable to use silicone under the rosette.

Connections with hoses and shower sets

Vittoria bathtub and shower taps have, in addition to water connections, also outputs for shower hoses and possibly for bathtub outlets. These outputs have standardized dimensions:

Thread for shower output: G 1/2" external (standard for shower hoses)
Thread for bathtub outlet: G 3/4" external or G 1/2", depending on the model
Length of shower hoses: standard 150 cm or 175 cm – for greater comfort, I recommend 175 cm or 200 cm

Vittoria shower hoses are standardly compatible with the international thread G 1/2", so if you need to replace the hose, you can use hoses from other manufacturers without compatibility problems.

More about the differences between shower and bathtub taps can be found in the article Vittoria shower tap vs. bathtub tap – what is the difference and which one to choose, where these technical aspects are also discussed in detail.

Practical scenarios from installation practice – what actually happens

Scenario 1: Replacing an old lever tap in a panel apartment

The customer orders a modern single-lever Vittoria tap to replace an old two-handle tap from the 80s. Problem: the old tap had a connection spacing of 120 mm, not 150 mm. The new tap has inlet hoses that technically tolerate a spacing of 110–170 mm, but at 120 mm, the hoses must be bent significantly – which is technically possible, but at an angle, it causes stress on the thread and a possible water leak over time.

Correct solution: replacement of corner valves with a shift of their position to 150 mm. If the wall is completely covered with tiles and removing the valves would mean breaking the tiles, another option is special extensions/offset adapters, which shift the valve outlet by the required 15 mm.

Scenario 2: New tap is too high for the basin

The customer bought a luxury model with a high spout (outlet height 170 mm) for a flat design basin with a basin depth of only 90 mm. Result: water is splashing all over the bathroom. Solution: replacement of the tap with a model with a lower outlet (around 100 mm) or replacement of the basin with a deeper model. Both options are costly – and the whole problem could have been avoided by simply measuring the depth of the basin before purchase.

Scenario 3: Shower tap mounted too low

The customer chose the position of the wall-mounted shower tap at a height of 800 mm from the floor – "because it seemed comfortable to him." After installation of the shower set, he found that the overhead shower was hanging too low and tall family members could not reach it. In addition, the shower tap was located below the level of the hands in a normal standing position. Relocating the plumbing would require work on the tiling. Lesson: always think about the installation height with regard to the height of all family members and the type of shower set.

Scenario 4: Installation into a thick marble countertop

The customer had their own marble countertop with a thickness of 60 mm. The standard mounting nut for the Vittoria faucet is designed for a thickness up to 45 mm – so the nut could not reach the thread. Solution: an extended mounting rod (threaded rod M10 or M8) and a special nut that was ordered separately. This case is not rare – thick stone countertops require extended mounting hardware.

How to correctly measure all necessary values before purchase

Before ordering a Vittoria faucet, prepare a tape measure and record the following values:

Distance between supply connections: distance between the centerlines of hot and cold water (ideally 150 mm)
Height of connections from the floor: if it is a wall-mounted faucet, measure from the floor to the centerline of the corner valve thread
Depth of installation: from the surface of the wall (after tiling) to the centerline of the thread – for wall-mounted faucets
Depth of the sink bowl: from the top edge to the bottom of the bowl – to determine the appropriate outlet height
Diameter of the mounting hole: in the sink or countertop (standard 35 mm)
Thickness of the material at the installation site: for countertop faucets – ceramic, stone, wood?
Distance from the connections to the faucet: to determine the length of the supply hoses

With these values in hand, you can then select a model in the category Vittoria faucets that will fit without complications. More on what to focus on when choosing is described in the article How to choose Vittoria faucets – what to focus on before purchase.

Compatibility with existing fittings and planned replacement

If you are replacing only the faucet itself (without replacing the shower set, sink, or piping), it is important to check compatibility with existing fittings. A G 1/2" threaded hose is an international standard and should be compatible with every Vittoria faucet. Compatibility issues may arise with non-standard pipe sizes, old threads from other systems, or when combining different brands.

Another aspect is spare parts – cartridges, seals, and aerators. Vittoria faucets use standardized cartridges (diameter 35 mm or 40 mm, depending on the model), for which spare parts are available. More about cartridges and their replacement can be found in the article Replacing seals and cartridges in Vittoria faucets – when and how to do it.

Water pressure and its influence on the installation and operation of the faucet

Vittoria faucets are designed for a working water pressure range of 0.5–6 bar (depending on the model). Most Slovak apartment water systems operate at a pressure of 2–4 bar, which is ideal for Vittoria faucets. If the pressure is too low (under 1 bar), some functions (such as thermostatic faucets or faucets with flow restrictors) may not work properly. If the pressure is too high (over 6 bar), it may lead to faster wear of the cartridge and seals.

More detailed information about pressure requirements can be found in the article Water pressure and Vittoria faucets – what minimum pressure you need for proper function.

Most frequently asked questions (FAQ)

What is the standard distance between supply connections for Vittoria faucets?

The standard distance between supply connections is 150 mm between the centerlines of hot and cold water. This is a European standard that applies to the vast majority of installations. The supply hoses provided with the faucet tolerate slight deviations (usually ±15–20 mm), but for larger deviations, adjustments to the piping or the use of special adapters are necessary.

What outlet height is suitable for my sink?

It depends on the depth of the sink bowl. If your sink has a bowl depth of 150–180 mm (a common standard), an outlet height of 120–140 mm is ideal. For shallower sinks (under 100 mm), use a faucet with an outlet height of 80–100 mm. For deeper sinks, choose an outlet height of 150–180 mm or higher.

What is the diameter of the mounting hole in the sink for Vittoria faucets?

The standard diameter of the mounting hole is 35 mm (more precisely 32–38 mm). Vittoria faucets are designed for this standard size. If you have an atypical sink with a different diameter, contact the seller before purchase.

Is it possible to connect a Vittoria faucet to a supply with the opposite orientation (hot on the right, cold on the left)?

Technically, it is possible (the hoses physically allow you to swap them), but it is not recommended. The cartridge mechanism is designed for the standard orientation (hot on the left, cold on the right), and with the opposite connection, the direction of the handle operation does not match intuitive expectations. The correct solution is to swap the connections at the corner valves in the wall.

How long should the supply hoses be?

The length of the supply hoses depends on the distance between the corner valve in the wall and the bottom connection of the faucet. Measure this distance (usually 30–50 cm for standard sinks) and order hoses that are a few centimeters longer to allow for some bending. The most commonly used hoses are 35–45 cm long. Hoses that are too long are not a problem (they can be bent), but hoses that are too short are a serious issue.

What is the maximum thickness of a sink or countertop for which the standard installation of a Vittoria faucet is suitable?

Standard mounting hardware is designed for material thickness up to 40–55 mm (depending on the specific model). For thicker countertops (e.g., solid marble, thick natural stone), extended mounting rods and special nuts are required, which are not always included in the standard package. In such cases, confirm with the seller before ordering.

Conclusion – preparation is the foundation of a successful installation

Dimensions, spacing, outlet heights, and types of connections – all of these are technical parameters that may seem boring, but in practice, they determine whether the installation goes smoothly or ends up requiring tile removal and pipe rework. Experience from dozens of customer cases clearly shows: every minute spent measuring and planning before purchase saves hours of work during installation.

Vittoria faucets are designed in accordance with European standards and standard dimensions, so no problems should arise if the preparation is done correctly. The key is knowing what to measure and knowing which values must match. I hope this article has helped you navigate all these aspects – and if you are unsure about any dimension, do not hesitate to measure it once more before ordering.

For a complete step-by-step installation process, read the article Installing a Vittoria sink faucet step by step – a mistake-free procedure, where all steps are described, including proper sealing of threads and flow setting.

Do you have a question about this topic?

Struggling to decide or dealing with a specific situation in your home? Write to us – we are happy to help.