Products FAQ

Standard-size sink openings and faucet dimensions are used throughout the plumbing industry. However, there are differences in faucet design — some are single-hole and others are three-hole designs, which means the faucets handles are 4 inches apart from center to center. If your sink has a wider spread (such as 8-inch), you will need a faucet designed for that configuration. For tub/shower, different valve types require different trim kits, so always confirm compatibility before purchasing.

In most cases, yes. However, if you are changing finishes — for example, from chrome to brushed gold — you will likely want to replace the drain assembly to match the new faucet finish. Check that the drain fits your sink's drain opening size before installing.

Yes. Rigid plastic PVC tubing can be joined to copper using grip fittings. Each side of a grip fitting contains a narrow gripping ring and a compression ring (or rubber O-ring) that creates a watertight seal. Grip fittings do not require soldering and are suitable for both hot and cold water lines. Follow the fitting manufacturer's instructions for proper installation.

Most faucet installations require: Phillips and flat-head screwdrivers, an adjustable wrench (or basin wrench for hard-to-reach areas under the sink), slip-joint pliers, a flashlight, plumber's tape (thread seal tape), and plumber's putty. The specific tools may vary by model — refer to your product's installation guide for the full list.

Thread seal tape and pipe dope are both effective pipe thread sealants used on threaded connections to prevent leaks. They can be used interchangeably in most situations. Plumber's putty is a soft, pliable sealant used to create a watertight seal between the sink and the faucet base, and between the sink and the drain. Do not use plumber's putty on plastic surfaces, as it can cause cracking over time — use silicone sealant instead.

The most time-consuming step is usually removing the old faucet, especially if the water supply connections are corroded and hard to disconnect. Installing the new faucet itself — by following the included installation guide — is generally straightforward. Most standard faucet replacements can be completed in 30–60 minutes by a reasonably handy homeowner.

Follow the step-by-step installation guide included with your faucet. Key tools you will need: a flashlight, screwdrivers, an adjustable wrench, channel-lock pliers, and plumber's tape. Always turn off the water supply valves under the sink before starting. If you need additional guidance, check the product page on our website for installation videos and guides specific to your model.

Cause: During manufacturing, silicone lubrication is applied to the cartridge. The combination of this lubrication and the weight of the handle can cause the faucet to self-close, especially when new. For models using a handle connector, a missing metal washer or a broken connector may also be the cause.

Solution: The lubrication issue is typically resolved with regular use. If the problem persists, check whether the handle connector or washer is damaged and replace as needed.

Cause: Reduced flow from both hot and cold lines is commonly caused by debris in the cartridge, a clogged aerator, a stuck diverter, or a malfunctioning spray wand.

Solution: First, remove and clean or replace the aerator (the small screen at the tip of the spout). If that does not resolve the issue, inspect and clean the cartridge, or replace it if damaged.

Cause: Reduced flow from only one temperature line is typically caused by a shut-off valve that is not fully open, low pressure through one supply line, or an obstruction in one of the supply lines.

Solution: Make sure both shut-off valves under the sink are fully open. Check both supply lines for kinks or obstructions. If the issue persists, the cartridge or a supply line may need to be replaced.

Leaks are most commonly caused by a worn, scratched, or torn cartridge, O-ring, or grommet. In most cases, replacing the cartridge will resolve the leak. If the leak continues after a cartridge replacement, contact our support team with your order and model number for further assistance.

Cause: This is typically caused by a broken pivot rod or an adjustment issue with the pivot rod or lift rod.

Solution: Inspect the pivot rod — it is the small horizontal rod that inserts into the back of the drain. Check that it is properly seated in the clevis strap. Adjust the clip position on the clevis strap to change how far the stopper opens or closes. If the pivot rod is broken, replace the drain assembly.

Cause: This is caused by debris or a damaged O-ring inside the spout base.

Solution: Remove the spout and inspect the O-rings at the base. Clean away any debris and lubricate the O-rings with a silicone-based grease. Do not use petroleum-based products (such as WD-40), as they can degrade rubber seals. Reinstall the spout and test the rotation.

Leaks from the end of the spout are most commonly caused by a worn, scratched, or torn O-ring or grommet on the cartridge. On models with a handle mechanism, a broken internal part may also be the cause.

Solution: Replace the cartridge (for single-handle models) or both cartridges (on two-handle models). Always turn off the water supply before performing any repair.

Cause: This is usually caused by sediment or debris in the cartridge, mineral buildup, or a damaged seal within the cartridge. A loose handle may also indicate that it is not properly installed or that the handle mechanism has an issue.

Solution: Replace the cartridge. If the handle is loose, tighten the handle screw or inspect the handle mechanism for damage.

A pressure-balancing valve automatically balances the incoming hot and cold water pressure to compensate for fluctuations in water flow. This keeps the shower temperature within ±3°F (1°C) of the set temperature, even when other fixtures — such as a toilet flush or a washing machine — are in use. This type of valve is required by building codes in most of the United States because it significantly reduces the risk of scalding.

Cause: Debris or an obstruction in the balancing spool may be preventing it from moving freely. In some cases, insufficient pressure in the hot or cold supply line is the cause. The valve may also need temperature calibration.

Solution: First, verify that both hot and cold water are supplied to the valve by checking the shut-off valves. If water supply is confirmed, the cartridge or balancing spool likely needs to be cleaned or replaced.

Cause: This is most likely caused by an installation error: a faulty cartridge, insufficient hot or cold water supply to the valve, or an uncalibrated temperature limit stop.

Solution: Check that both hot and cold water are fully supplied to the valve. Inspect the cartridge for damage and replace if necessary. If the valve has a temperature limit stop, it may need to be adjusted.

Cause: Hot and cold water may not be reaching the valve, or there may be an obstruction in the spout or showerhead.

Solution: Verify that all external shut-off valves are fully open. Remove and inspect the showerhead for debris or mineral buildup — clean or replace if blocked. If water still does not flow, the cartridge or valve body may need inspection.

Cause: Water may not be fully reaching the valve, the balancing spool may be stuck, or the temperature limit stop may be set to restrict full hot water.

Solution: Confirm that the hot water shut-off valve is fully open and that your water heater is set to an appropriate temperature (typically 120°F / 49°C). If the valve has an adjustable temperature limit stop, it can be repositioned to allow a higher temperature.

Cause: This is caused by either a flow restriction in the system or an installation issue with the diverter.

Solution: Remove the tub spout and inspect for any debris or obstruction. Check that the diverter (the mechanism that switches flow between the tub spout and showerhead) is functioning correctly. If the diverter is worn or stuck, the tub spout assembly should be replaced.

Whether a faucet repair is a comfortable DIY project depends on the individual. Installation instructions are included with most parts — we recommend reviewing them carefully before starting. If you have questions about the repair process, please contact our support team at support@grandjoyhome.com with your order number and model number and we will be glad to help.

Yes. Before installing a new cartridge, always shut off the water supply to the valve. Once the water is off and the old cartridge is removed, clean the inside of the valve body to remove any debris, mineral deposits, or sediment. Rinse thoroughly before inserting the new cartridge. Installing a new cartridge into a dirty valve body can cause premature wear or leaks.

This can be corrected by removing the handle, rotating the cartridge stem 180 degrees (either clockwise or counter-clockwise), and reinstalling the handle. Alternatively, the hot and cold supply lines feeding the faucet can be swapped. Refer to your product’s installation guide for the specific cartridge removal procedure.

Use a damp cloth with a small amount of mild liquid dish soap, then rinse with clean water and dry with a soft cloth. Never use cleaners containing abrasives (including abrasive sponges or steel wool), ammonia, bleach, sodium hypochlorite, alcohol, or other harsh chemicals. These can permanently damage the finish. Avoid cleaners specifically formulated for removing hard-water deposits unless they are confirmed safe for your finish type.

Do not use cleaners that contain abrasives, harsh chemicals, alcohol, or organic solvents. Avoid any sponges or pads with abrasive particles, as they can scratch polished metallic surfaces. Use only a soft, damp cloth with mild liquid soap. Rinse and dry after cleaning. Regular gentle cleaning is the best way to maintain the finish and prevent mineral buildup.

This is normal behavior for any faucet with a high-arc spout. After the handles are turned off, water remains inside the elevated portion of the spout arc. Gravity slowly drains this residual water out of the spout tip. This dripping stops once the spout is empty and is not a sign of a leak or malfunction.

In most cases, no. Since 1992, U.S. federal law (the Energy Policy Act) has set strict maximum flow rate limits for faucets and showerheads. All manufacturers must comply with these standards. If you are experiencing lower than expected flow, the most common causes are a clogged aerator (the small screen at the tip of the spout) or partially closed shut-off valves. Remove and clean the aerator first — this usually resolves low-flow issues.

When buying a faucet, consider three main factors: quality, features, and style.

Quality: Look for solid brass or stainless steel construction, a ceramic cartridge (washer-free designs are more durable and drip-resistant), and a finish that is resistant to tarnish and corrosion.

Features: Consider whether you want a single or two-handle design, a pull-down or pull-out spray (for kitchen faucets), water-saving flow rates, or anti-scald protection for shower valves.

Style: Choose a finish (such as chrome, brushed nickel, matte black, or brushed gold) that complements your space and coordinates with other fixtures.

Yes. Our products maintain the same quality standards regardless of where they are purchased. There is only one grade of material, one grade of cartridge, and one level of warranty coverage across all sales channels. While product model numbers may vary between retail and trade/wholesale channels, the underlying quality and components are identical.

A pop-up drain assembly is a mechanical drain used in bathroom sinks. It uses a stopper (called a pop-up stopper) that can be opened or closed to hold water in the sink. The stopper is typically controlled by a lift rod located behind the faucet — pushing the rod down closes the drain, and pulling it up opens it. Some faucets are sold with a pop-up drain assembly included; others are not, so check the product listing before purchasing.