Valve Materials & Connection Types
Updated February 20, 2026
Key Takeaway
Valve material must match the application: brass for potable water, PVC for drainage and irrigation, stainless for corrosive environments. Connection type must match your pipe.
Overview
Valve material must match the application: brass for potable water, PVC for drainage and irrigation, stainless for corrosive environments. Connection type must match your pipe.
What to Know
Buying Tips
- Always lead-free brass (NSF 61) for potable water.
- Push-fit for repairs and retrofits. Soldered or crimped for new work.
- Match valve connection to pipe material.
- Dielectric unions required where brass meets galvanized steel.
Common Mistakes
- Non-lead-free brass on potable water violates code.
- Brass directly on galvanized without dielectric union.
- PVC valves on hot water -- use CPVC or brass.
- Cheap no-name valves. Valve failure means water damage.
Bottom Line
Lead-free brass for potable water. Match connection to pipe type. Push-fit for repairs, permanent methods for new work. Buy quality brands.