How To Make A Solvent Weld Joint (Video)

Solvent weld soil joints are a durable and permanent solution for connecting PVC soil pipes. The process involves chemically bonding the pipe and fitting, creating a strong, leak-proof joint. Here's a step-by-step guide to making a solvent weld waste joint and tips for success.

Materials You’ll Need

• Solvent Cement: A chemical adhesive that softens and bonds the pipe and fitting permanently.
• Brush: Typically included with solvent cement for application.
• Pencil or Marker: To mark the connection point.
• Cloth or Paper Towels: For cleaning and wiping away excess cement.
• Fine-tooth Saw or Pipe Cutter: If the pipe needs to be cut.

Step-by-Step Guide

1. Prepare the Pipe and Fitting

• Ensure the pipe and fitting are clean, dry, and free of dust, debris, or burrs.
• If the pipe is freshly cut, use a deburring tool or sandpaper to remove any rough edges.

2. Dry Fit the Connection

• Push the fitting onto the pipe to check alignment and fit.
• Use a pencil or marker to make a reference mark where the fitting stops on the pipe. This will guide you when applying the solvent cement.

3. Apply Solvent Cement to the Fitting

• • Liberally brush the cement around the inside of the fitting.
  • Always start with the fitting to minimize mess and ensure an even application.

4. Apply Solvent Cement to the Pipe

• • Brush the cement around the outside of the pipe where it will meet the fitting.
  • Work quickly but carefully to avoid excess cement dripping.

5. Join the Pipe and Fitting

• • Push the pipe and fitting together immediately after applying the cement.
  • Twist the fitting slightly as you push it into place. This helps spread the cement evenly and ensures a strong bond.

6. Clean the Joint

• • Use a cloth or paper towel to wipe away any excess cement from the edges.
  • Be cautious not to disturb the joint while cleaning.

7. Curing Time

• • Allow the joint to set for 5 minutes to ensure initial bonding.
  • Wait at least 12 hours before running water through the system to ensure the joint is fully cured and watertight.

Tips for Success

• Work in a Well-Ventilated Area: Solvent cement emits strong fumes, so ensure proper ventilation during use.
• Avoid Over-Application: Too much solvent cement can create drips and weaken the joint. Use a consistent, even layer.
• Work Quickly: Solvent cement sets rapidly, so complete the joint immediately after applying the adhesive.
• Permanent Bond: Remember, solvent welds create a permanent connection. If you need flexibility or the option to disassemble, consider using a push fit system instead.
• Use the Right Cement: Ensure the solvent cement is suitable for the type of pipe material you're working with (e.g., PVC or ABS).

By following these steps, you’ll create a strong, reliable solvent weld joint that will last for years. Proper preparation, application, and curing are key to achieving a leak-free and professional finish.