| 1 | Identify the Mounting Type | Deck-mounted basin tap | Installed through one or more holes in the basin, countertop, or vanity. Common single-hole bodies use one central opening. | Confirm the number of pre-drilled holes and the permitted hole diameter in the basin or countertop installation guide. | Choose a deck-mounted model for most countertop, inset, and pedestal basin layouts. |
| 2 | Compare Wall-Mounted Options | Wall-mounted basin tap | Usually supplied with separate hot and cold connections or a concealed mixer body. Spout projection commonly falls around 150–220 mm, depending on the design. | Requires water outlets positioned inside the wall and a finished-wall depth compatible with the concealed or exposed valve body. | Verify the basin rim position so the water stream reaches the bowl without splashing. |
| 3 | Select the Control Format | Single-lever mixer | One handle controls temperature and flow. It generally needs one mounting hole and two flexible supply connections. | Leave enough clearance above and behind the handle for operation and cleaning; check that hot and cold supplies are connected correctly. | A practical choice where users want simple temperature adjustment and fewer countertop holes. |
| 4 | Check Traditional Hole Layouts | Two-handle or three-hole tap set | Two-handle sets normally use separate hot and cold inlets; three-hole sets typically include two handles and a central spout. | Measure the hole spacing before purchase. The center-to-center distance must match the basin or countertop drilling pattern. | Do not assume hole spacing is universal; regional products may use different layouts. |
| 5 | Match the Basin Height | Low-, medium-, or high-rise spout | Measure spout height from the mounting surface to the outlet and spout reach from the tap centerline to the water outlet. | The outlet should discharge into the basin rather than onto the rim. Allow sufficient space for hand washing without contacting the basin. | High-rise taps are often suited to countertop bowls; low-rise taps are commonly used with integrated basins. |
| 6 | Verify Connection Standards | Flexible hoses and inlet fittings | Common connection sizes include G3/8 and G1/2 threads, but thread standards and hose lengths vary by market. | Confirm inlet thread type, hose length, washer arrangement, and available space below the basin before ordering. | Use the local plumbing standard or an approved adapter; do not force incompatible threads together. |
| 7 | Check Water Pressure | Standard mixer or low-pressure-compatible tap | Many basin mixers operate across approximately 0.5–5 bar, but the exact minimum pressure depends on the product design. | Compare the tap's minimum and maximum pressure ratings with the building's static and operating pressure. | Low-pressure or gravity-fed systems may require a specifically compatible tap; pressure ratings should be stated in the technical sheet. |
| 8 | Evaluate Flow Control | Water-saving aerator | Common basin-tap flow rates are approximately 4–8 L/min at the stated test pressure; actual flow varies with pressure and aerator design. | Ensure the aerator can be removed for cleaning and that the outlet does not restrict flow below the user's practical needs. | Compare flow rate at the same pressure because ratings from different test conditions are not directly equivalent. |
| 9 | Confirm Drain Compatibility | Pop-up, click-clack, or waste-free configuration | A basin tap may be supplied with a mechanical waste, a push-button waste, or no drain assembly. Basin waste sizes vary by region and basin design. | Check whether the basin has an overflow hole and select an overflow-compatible or non-overflow waste accordingly. | The tap, waste, trap, and basin should be checked as one complete drainage system. |
| 10 | Review Compliance and Maintenance | Certified materials and serviceable construction | Look for potable-water suitability, corrosion-resistant metal components, replaceable seals, accessible cartridges, and documented test standards. | Follow the applicable local plumbing, drinking-water, backflow, and installation requirements. Flush supply lines before final connection. | Request installation instructions, spare-part information, warranty terms, and cleaning guidance before placing a global order. |