Ready to upgrade to a luxurious drop-in waterfall kitchen sink? These elegant sinks combine style with functionality, featuring a cascading faucet that creates a beautiful water flow effect. While the installation might look complex, we'll break it down into simple, manageable steps.
This guide will walk you through how to install a drop-in kitchen sink from preparation to final connections, including all the accessories like pull-out faucets, glass rinsers, and purification systems. Let's dive in!
Tools & Materials Checklist
Essential Tools:
- Jigsaw (for cutting countertop)
- Adjustable wrench
- Screwdriver (Phillips & flathead)
- Silicone caulk gun
- Tape measure & pencil
- Bucket & towels
Included Components:
- Waterfall sink (80×45×22cm)
- Pull-out faucet & water console
- Glass rinser & water inlet hose
- Purification faucet
- Strainer console
- Sink strainer & basket
- Drain coupling & garbage disposer
- Overflow hose & washer
- Drain hose & connector
- Angle valves
- Counterweight box
- Chopping board & basin
- Water supply hoses (hot/cold)
Step-by-Step Installation Guide
Step 1: Prepare the Countertop
- Mark the cutout area (slightly smaller than sink's external dimensions)
- Cut carefully with a jigsaw - go slow for clean edges
- Test-fit the sink before proceeding
Pro Tip: Apply silicone sealant around the edge for waterproofing before setting the sink.

Step 2: Install the Pull-Out Faucet System
- Connect 3 water supply hoses (⑮) to water console (②)
- Feed hoses through sink hole
- Secure with:
- Black rubber washer
- Metal washer
- Brass C-shaped lock nut
Step 3: Attach Counterweight & Spray Hose
- Connect pull-out spray hose to short water supply hose
- Install counterweight box (⑪) by:
- Loosening screws
- Inserting spray hose
- Tightening screws

Step 4: Install Glass Rinser
- Place transparent washer (③) on rinser bottom
- Insert into sink hole
- Secure from below with:
- White nut (③)
- Water inlet hose (③)

Step 5: Mount Purification Faucet
- Place thick black washer (④) around hole
- Insert faucet through washer
- Secure underneath with:
- Second black washer
- White nut
- Hose connector

Step 6: Install Drainage System
- Place strainer basket (⑥) in sink
- Add black rubber washer underneath
- Secure central strainer by rotating
- Attach strainer console (⑤)

Step 7: Connect Plumbing
- Rotate drain coupling (⑦) onto strainer
- Attach garbage disposer (⑦)
- Connect overflow hose (⑧) with:
- Blue rectangle washer
- Secure with bolt

Step 8: Final Connections
- Connect drain hose (⑨) to sewer system
- Attach water supply hoses to angle valves (⑩)
- Blue = cold water
- Red = hot water
3. Turn on water and test all functions

Pro Tips for Perfect Installation
✔ Seal all connections - Use plumber's tape for threaded joints
✔ Check for leaks - Run water for 5 minutes inspecting all joints
✔ Balance water pressure - Adjust angle valves if flow is uneven
✔ Secure heavy components - Counterweight box prevents hose sagging
Maintenance & Care
🔹 Weekly cleaning - Use mild detergent, avoid abrasives
🔹 Monthly checks - Inspect washers and connections
🔹 Avoid extreme temps - No boiling water directly in sink
🔹 Clean aerators - Remove mineral buildup monthly
FAQs
Q: Can I install this without professional help?
A: Yes, if comfortable with basic plumbing. For complex setups, consult a plumber.
Q: What if my countertop material is fragile?
A: Reinforce cut edges with waterproof sealant before installation.
Q: How do I adjust water flow intensity?
A: Use the angle valves to regulate pressure for perfect waterfall effect.
Q: Why is my spray hose retracting slowly?
A: Check counterweight box alignment and hose for kinks.
Conclusion
Now you know exactly how to install a drop-in kitchen sink with all its advanced features! From the stunning waterfall faucet to the convenient glass rinser, your new sink will be both beautiful and functional.