Connecting PEX Supply Lines — Install Water Supply Lines
Part of project
How to Install a Washing Machine Outlet Box · Step 5 of 8
In this video
Connect the hot and cold water supply lines using PEX tubing. This valve has built-in PEX connections. Slide a PEX crimp ring onto the blue (cold) PEX tube, and push the tube onto the cold inlet of the valve. Position the crimp ring 1/8 to 1/4 inch from the end of the tube and use a PEX crimping tool to create a secure connection. For the hot water side, connect a 90-degree PEX fitting to a length of red (hot) PEX tubing, then connect the other end of the 90-degree fitting to the hot inlet on the valve, crimping both connections securely.
Goal: Connect water supply to the valve
- The video shows special PEX fittings with a red plastic stop. This stop ensures the crimp ring is placed in the perfect position automatically, simplifying the process.
Used in this video
- PEX Crimping Tool (Tool Type: Pipe Repair Tool, Power Source: Manual, Crimping Tool Size: 1/2 inch) — Securing the PEX crimp rings to create a watertight seal.
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FAQs
Is the estimated 8-hour completion time realistic for an intermediate DIYer, or should I budget more time if I'm less experienced?
The 8-hour estimate is for an intermediate DIYer with some plumbing and carpentry experience. If you're a beginner, budget 1.5 to 2 times that, as learning new skills like pipe cutting, solvent welding, and working in tight spaces will add significant time. Always prioritize careful work over speed to avoid costly mistakes.
What are the most critical safety precautions I should take, especially when cutting into existing walls and dealing with water lines?
Before cutting into any wall, always use a stud finder with AC detection to locate studs, pipes, and electrical wires to avoid accidental damage. Turn off the main water supply before making any connections to existing lines. Have buckets and towels ready, and be prepared to shut off water immediately if a leak occurs during testing.
The project lists PEX crimp tools; can I use PEX expansion tools or SharkBite fittings instead, and what are the pros and cons?
Yes, PEX expansion tools like Uponor/ProPEX or SharkBite push-to-connect fittings are viable alternatives. Expansion tools require specific PEX-A tubing and offer a strong, reliable connection. SharkBite fittings are quicker and require no special tools beyond a cutter, but they are significantly more expensive per fitting and less permanent in nature.
What's the best way to ensure all my plumbing connections are leak-free, especially for the drain and supply lines?
For PVC drain lines, ensure you apply primer and cement generously and twist the pipe firmly into the fitting for a secure bond. For PEX supply lines, double-check that crimp rings are properly compressed or SharkBite fittings are fully seated. After all connections, slowly turn on the main water supply and thoroughly inspect every joint for drips or seeping water before closing the wall.
Connecting PEX Supply Lines — Install Water Supply Lines
Part of project
How to Install a Washing Machine Outlet Box · Step 5 of 8
In this video
Connect the hot and cold water supply lines using PEX tubing. This valve has built-in PEX connections. Slide a PEX crimp ring onto the blue (cold) PEX tube, and push the tube onto the cold inlet of the valve. Position the crimp ring 1/8 to 1/4 inch from the end of the tube and use a PEX crimping tool to create a secure connection. For the hot water side, connect a 90-degree PEX fitting to a length of red (hot) PEX tubing, then connect the other end of the 90-degree fitting to the hot inlet on the valve, crimping both connections securely.
Goal: Connect water supply to the valve
- The video shows special PEX fittings with a red plastic stop. This stop ensures the crimp ring is placed in the perfect position automatically, simplifying the process.
Used in this video
- PEX Crimping Tool (Tool Type: Pipe Repair Tool, Power Source: Manual, Crimping Tool Size: 1/2 inch) — Securing the PEX crimp rings to create a watertight seal.
Frequently Asked Questions
Is the estimated 8-hour completion time realistic for an intermediate DIYer, or should I budget more time if I'm less experienced?
The 8-hour estimate is for an intermediate DIYer with some plumbing and carpentry experience. If you're a beginner, budget 1.5 to 2 times that, as learning new skills like pipe cutting, solvent welding, and working in tight spaces will add significant time. Always prioritize careful work over speed to avoid costly mistakes.
What are the most critical safety precautions I should take, especially when cutting into existing walls and dealing with water lines?
Before cutting into any wall, always use a stud finder with AC detection to locate studs, pipes, and electrical wires to avoid accidental damage. Turn off the main water supply before making any connections to existing lines. Have buckets and towels ready, and be prepared to shut off water immediately if a leak occurs during testing.
The project lists PEX crimp tools; can I use PEX expansion tools or SharkBite fittings instead, and what are the pros and cons?
Yes, PEX expansion tools like Uponor/ProPEX or SharkBite push-to-connect fittings are viable alternatives. Expansion tools require specific PEX-A tubing and offer a strong, reliable connection. SharkBite fittings are quicker and require no special tools beyond a cutter, but they are significantly more expensive per fitting and less permanent in nature.
What's the best way to ensure all my plumbing connections are leak-free, especially for the drain and supply lines?
For PVC drain lines, ensure you apply primer and cement generously and twist the pipe firmly into the fitting for a secure bond. For PEX supply lines, double-check that crimp rings are properly compressed or SharkBite fittings are fully seated. After all connections, slowly turn on the main water supply and thoroughly inspect every joint for drips or seeping water before closing the wall.