The most common types of bathroom sink faucets include single-handle, 4-in. center set and widespread.

Single-handle controls are located above the spout or to the side of the spout. Single-handle bathroom faucets are available with different length spouts. Therefore, be sure you specify the proper length for the planned use. Longer spouts are required when used in conjunction with vessel sinks.

The control is turned either left or right, pulled up or down, or pushed front to back. These controls are sometimes confusing to individuals not familiar with their operation.

When evaluating the function of single-handle faucets — at the lavatory or any other fixture — there are two key factors: the faucet’s comfort zone swing and the volume control swing or lift. The typical faucet must be adjusted for both of these factors with use. Some faucets may be turned off leaving the control in a memory position. This allows the user to leave the faucet preset at a comfortable temperature setting for the next use.

Four-Inch Center Set

Small faucets are available where the spout and two separate handles require three holes and are laced along a single escutcheon plate. The drilling is generally 4 in. on center for this type of faucet. Although this is generally an economical faucet because the handles are very close to the spout, it may be difficult to clean. Unless it has lever handles, some people may also find it difficult to use.

Widespread Faucet Set

Some decorative faucets eliminate the escutcheon plate and separately mount the spout and two handles. The spacing is flexible and may be anywhere from 8 in. to 12 in.

These faucets are usually more attractive and are easier to use and to clean. Lavatories with a standard platform mounting offer an 8-in. spread. Lavatories which are designed to be used with counter-mounted faucets can feature a spread from 6 in. to 12 in.

Comfort Zone

Human beings are comfortable using water that ranges from 95° F to 105° F (35° C to 40.5° C). The distance of the fitting swing within this comfort zone determines how much adjustability is offered to the user. The total distance of travel from cold to hot should be as great as possible. A handle with a 120-degree arc from the hottest setting to the coldest, and with a 40-degree arc within the comfort zone from 95° F to 105° F (35° C to 40.5° C) is a functional, safe fitting design.

Volume Control