Whether you’re fixing a leaky faucet, upgrading your kitchen or bathroom, or just curious about how plumbing fixtures work, understanding the different parts of a faucet can be extremely helpful. Faucets may seem simple on the surface, but they are made up of several interconnected components that work together to control water flow and temperature.
In this guide, we will explore what the parts of a faucet are called, their individual functions, and how they all fit together to ensure smooth operation. If you’re shopping for plumbing accessories or want to replace a specific part, this detailed breakdown will help you make informed decisions.
Why Knowing Faucet Parts Matters
Understanding faucet parts is not just useful for plumbers or handymen. It benefits homeowners, renters, and anyone dealing with faucet maintenance. Here’s why it’s important:
- ✅ Helps identify issues like drips or low pressure
- ✅ Makes it easier to find the right replacement part
- ✅ Saves money by enabling DIY fixes
- ✅ Aids in choosing the right faucet for your sink or bathtub
At Cuoll, we offer a wide range of bathroom and kitchen accessories, including water filters, purifiers, and premium bathtubs that complement any plumbing setup.
Major Types of Faucets and How They Differ
Before diving into the parts, it’s essential to understand that not all faucets are built the same. Here are four common types:
- Compression Faucet – Uses rubber washers and requires two separate handles for hot and cold water.
- Ball Faucet – Has a rotating ball to control water flow and temperature.
- Cartridge Faucet – Uses a movable cartridge and is easy to repair.
- Ceramic Disk Faucet – Uses two ceramic disks for highly durable operation.
Each type may have different internal mechanisms, but most share similar core components. Let’s explore them below.
What Are the Parts of a Faucet Called?
Below is a breakdown of the main faucet components, organized from top to bottom:
1. Handle(s)
The handle is what you turn or lift to start the flow of water. Faucets can have:
- Single Handle: Controls both temperature and flow.
- Double Handle: Separate handles for hot and cold water.
🔧 Tip: Loose handles are often a sign of worn-out cartridges or washers.
2. Spout
This is the part of the faucet from where the water comes out. Common spout styles include:
- High-arc / Gooseneck spouts for filling large pots
- Straight spouts for compact areas
- Pull-out or pull-down spouts with hoses
💧 Upgrade your kitchen faucet with our Cuoll water filter attachments that connect directly to the spout!
3. Aerator
An aerator is a small screen at the tip of the spout that mixes air into the water stream. It:
- Reduces splashing
- Improves water efficiency
- Filters out debris
🛠️ If your water pressure feels low, the aerator may be clogged.
4. Cartridge / Valve
The cartridge is a crucial component that controls water flow and temperature. Different faucets have different valve mechanisms:
- Ceramic disks
- Rubber washers
- Ball valves
⚙️ A leaky faucet often points to a worn-out cartridge.
5. O-Ring
O-rings are rubber seals that prevent leaks around the faucet base or handle. Over time, they can wear out and cause water to seep.
🧽 Replacing O-rings is an affordable DIY fix.
6. Body or Housing
This is the central structure that holds all the parts together. It can be:
- Centerset – handles and spout on one base
- Widespread – handles are separate from the spout
- Single-hole – compact and modern
🏠 Explore our designer faucets that fit all housing styles at Cuoll.
7. Mounting Nut and Washer
These components are underneath the sink and help secure the faucet to the countertop or sink basin.
🔧 Use a basin wrench to reach these tight spaces during installation.
8. Supply Lines
These are flexible hoses that connect the faucet to your home’s plumbing system. Usually labeled for hot and cold water.
🚿 Consider replacing old supply lines when upgrading your faucet.
9. Escutcheon (Deck Plate)
This is the decorative plate that hides unused holes in the sink. Often used with single-handle faucets installed on a 3-hole sink.
✨ Adds a clean, finished look to your faucet setup.
10. Spray Hose (Optional)
Found in kitchen faucets, this flexible hose allows for extended reach and directional control.
🔄 Pair it with Cuoll’s faucet-mounted filters for cleaner, directed flow.
Faucet Diagram: Visual Reference
For better understanding, here’s a simplified diagram of faucet parts:
- Handle
- Spout
- Aerator
- Cartridge/Valve
- O-rings
- Body
- Mounting Nut
- Supply Lines
- Escutcheon
- Spray Hose
📌 Bookmark this guide or print it out for quick reference during faucet repairs or installations.
Common Faucet Problems and Related Parts
| Issue | Likely Cause | Part to Check |
|---|---|---|
| Dripping faucet | Worn washer/cartridge | Cartridge/O-ring |
| Low water pressure | Blocked aerator or supply line | Aerator/supply line |
| Leaking around base | Damaged O-ring | O-ring |
| Stiff handle movement | Corroded cartridge | Cartridge |
| No hot or cold water | Supply line issue | Supply lines |
How to Identify Your Faucet Parts
Not sure what type of faucet or part you have? Try the following:
- Look under the sink: for manufacturer labels or part numbers.
- Check faucet manuals: if you still have them.
- Use a faucet identification tool online
- Take a photo and compare with online diagrams.
🛍️ At Cuoll, our customer service team can also help match you with the right replacement faucet or accessory.
When to Replace vs. Repair Faucet Parts
| Replace | Repair |
|---|---|
| Outdated or corroded faucet | Leaking due to worn washer |
| Extensive rust or mineral buildup | Loose handles or minor drips |
| Upgrading kitchen or bathroom design | Aerator cleaning or O-ring replacement |
| Cracks in faucet body or spout | Replacing spray head or hose |
Must-Have Faucet Accessories at Cuoll
✅ Water Filters for Faucets – Enjoy clean, odor-free water right from your tap.
✅ Purification Systems – Reduce chlorine, lead, and other impurities.
✅ Luxury Bathtubs with Faucet Packages – Complete your bathroom renovation with style.
✅ Smart Faucet Attachments – Track usage and save water.
💡 Don’t miss our White Pro Bath Ball Filter — now available with screen display at just $49.99!
How to Maintain Your Faucet for Long Life
- Clean aerators regularly
- Check for leaks monthly
- Replace washers and O-rings yearly
- Avoid over-tightening handles
- Use vinegar to remove mineral buildup
Final Thoughts: Understanding Faucet Parts is Empowering
Now that you know what the parts of a faucet are called, you’re better equipped to handle repairs, upgrades, and replacements. This knowledge can save you time, money, and frustration. Whether you’re fixing a dripping kitchen tap or installing a luxurious new bathtub faucet, each part plays a crucial role in your plumbing system.
Looking for the perfect accessories to improve your water flow? Cuoll is your trusted destination for water filters, purifiers, bathtubs, and everything you need to upgrade your home’s water systems.