This video would be a good answer for questions like:
- What are the code requirements for a water heater's pressure relief valve drain line?
- How should the discharge pipe for a water heater's pressure relief valve be installed?
- What are the differences between the International Residential Code and the Uniform Plumbing Code regarding water heater discharge pipes?
- Is my water heater's discharge pipe code-compliant?
- What materials are allowed for a water heater's discharge pipe?
- Can I have a shut-off valve on my water heater's discharge pipe?
- How should the discharge pipe terminate according to code?
- What are the safety hazards associated with incorrectly installed discharge pipes?
- How does gravity affect the installation of a water heater's discharge pipe?
- What is the minimum diameter required for a discharge pipe?