How to disassemble and assemble a square concealed faucet?
Jun 13, 2025
As a supplier of Square Concealed Faucets, I often receive inquiries from customers about how to disassemble and assemble these fixtures. In this blog post, I'll provide a comprehensive guide on the process, sharing professional tips and tricks that I've gathered over the years in the industry.
Prerequisites
Before you start disassembling or assembling a Square Concealed Faucet, you'll need to gather a few essential tools. These include an adjustable wrench, a screwdriver set (both flat - head and Phillips - head), a basin wrench, a pair of pliers, and a bucket to catch any water that may spill. Additionally, it's a good idea to have a clean, well - lit workspace where you can lay out the parts as you remove them.
Disassembly Process
Step 1: Shut Off the Water Supply
The first and most crucial step is to turn off the water supply to the faucet. Locate the shut - off valves under the sink or in the wall. These valves are usually small, round, or lever - operated. Turn them clockwise until they are fully closed. This will prevent any water from flowing while you're working on the faucet.
Step 2: Remove the Handle
Most Square Concealed Faucets have a decorative cap covering the screw that holds the handle in place. Use a small flat - head screwdriver to gently pry off the cap. Once the cap is removed, you'll see a screw. Use the appropriate screwdriver to loosen and remove the screw. After that, you can pull the handle straight up and off the faucet body.
Step 3: Take Out the Cartridge
After removing the handle, you'll expose the cartridge. The cartridge is the part that controls the flow and temperature of the water. There may be a retaining clip or a nut holding the cartridge in place. If it's a clip, use a pair of pliers to carefully remove it. If it's a nut, use an adjustable wrench to loosen and remove it. Once the retaining mechanism is removed, you can pull the cartridge straight out.
Step 4: Disconnect the Supply Lines
Under the sink, you'll find the hot and cold water supply lines connected to the faucet. Use an adjustable wrench or a basin wrench to loosen the nuts that connect the supply lines to the faucet. Place a bucket underneath to catch any water that may drip out. Once the nuts are loose, you can pull the supply lines away from the faucet.
Step 5: Remove the Faucet from the Sink
There are usually mounting nuts that hold the faucet in place under the sink. Use a basin wrench to loosen these nuts. As you loosen them, the faucet will start to become loose on the sink. Once the nuts are completely removed, you can lift the faucet out of the sink.
Assembly Process
Step 1: Prepare the Faucet
Before installing the faucet, make sure all the parts are clean and free of debris. Check the O - rings and gaskets for any signs of wear or damage. If any parts are damaged, it's a good idea to replace them. You can find replacement parts at your local hardware store or by visiting our website Square Concealed Faucet.
Step 2: Install the Faucet on the Sink
Lower the faucet into the sink through the mounting holes. From underneath the sink, thread the mounting nuts onto the faucet's mounting studs. Use a basin wrench to tighten the nuts securely, but be careful not to overtighten as this can damage the faucet or the sink.
Step 3: Reconnect the Supply Lines
Take the hot and cold water supply lines and connect them to the corresponding ports on the faucet. Use an adjustable wrench or a basin wrench to tighten the nuts. Make sure the connections are tight to prevent any leaks.
Step 4: Insert the Cartridge
Lubricate the O - rings on the cartridge with a small amount of silicone grease. This will make it easier to insert and help prevent leaks. Carefully insert the cartridge into the faucet body and secure it with the retaining clip or nut.
Step 5: Attach the Handle
Place the handle over the cartridge stem. Insert and tighten the screw that holds the handle in place. Replace the decorative cap over the screw.
Tips and Tricks
- When disassembling and assembling the faucet, keep all the small parts in a container. This will prevent them from getting lost.
- If you encounter a stubborn nut or screw, apply some penetrating oil and let it sit for a few minutes before trying to loosen it again.
- Always test the faucet for leaks after assembly. Turn on the water supply slowly and check all the connections for any signs of water dripping.
Contact for Purchase and Negotiation
If you're interested in purchasing our Square Concealed Faucets, or if you have any questions about our products, we'd love to hear from you. We offer a wide range of high - quality faucets, including Brass Concealed Faucet and Single Function Concealed Faucet. Our team of experts is ready to assist you with any procurement needs and negotiate the best deals for you.


References
- "Bathroom Faucet Installation and Repair Guide" by Home Improvement Publishing
- Manufacturer's Manuals for Square Concealed Faucets
