1. **What is the best pipe for hot water?**
**PEX (cross-linked polyethylene), specifically PEX-A or PEX-B, is often considered the best for hot water** due to its flexibility, corrosion resistance, and tolerance for high temperatures (up to 200°F/93°C). Copper is also excellent but costs more.
2. **Which pipe is best for high-pressure?**
**Stainless steel or Schedule 80 PVC/CPVC are best for high-pressure applications**. Stainless steel handles extreme pressure and corrosion, while Schedule 80 PVC/CPVC offers thicker walls than standard pipes for pressurized systems.
3. **What type of pipe is not recommended for a water line?**
**Galvanized steel pipe is not recommended for water lines** due to corrosion, rust buildup, and reduced water flow over time. Polybutylene (PB) is also obsolete and prone to cracking.
4. **What pipe can handle high heat?**
**Copper, CPVC (Chlorinated Polyvinyl Chloride), and PEX pipes can handle high heat** (typically up to 200°F/93°C). Copper is most durable for sustained high temperatures, while CPVC and PEX are cost-effective alternatives.
5. **Which type of pipe is used for hot water?**
**Copper, CPVC, and PEX pipes are commonly used for hot water**. Copper is traditional and reliable, CPVC is affordable and heat-resistant, and PEX is flexible and easy to install.
### Key Notes:
- **Avoid PVC for hot water** (it warps above 140°F/60°C).
- **Polybutylene (PB) and galvanized steel are outdated/unreliable** for modern water lines.
- **Pressure ratings**: Always check a pipe's PSI rating (e.g., Schedule 80 PVC > Schedule 40).
- **PEX types**: PEX-A has superior heat/chemical resistance; PEX-B is more rigid.
