Pipes & Fittings Buying Checklist

Research Phase

Research the 4 types of pipes & fittings available
PVC (White)
ABS (Black)
Cast Iron
Soldered (Sweated)
Push-Fit (SharkBite)
PEX Crimp & Expansion
Compare prices across at least 3 brands
Read warranty terms before purchasing
Check compatibility with your existing plumbing

Shopping Tips

PVC is the standard choice for new residential DWV work in most areas.
If noise matters (drains running through bedroom walls), consider cast iron for those specific runs.
Never mix PVC and ABS with solvent cement. Use a mechanical transition coupling.
Push-fit for repairs and tight spaces. Soldered or crimped for new full-line installations.
Always deburr pipe ends before any connection method. Burrs cause leaks.
Keep spare push-fit caps and couplings for emergency repairs.
Check your local plumbing code before choosing. Some jurisdictions require copper for specific applications (like the water heater connection or the first few feet from the meter). Most accept PEX for all interior supply lines.
PEX comes in three types: PEX-A (most flexible, expansion fittings), PEX-B (most common, crimp fittings), and PEX-C (least common). All three are acceptable for residential supply lines. PEX-A costs 20-30% more but is easier to work with.
Copper scrap has value. If you repipe from copper to PEX, save the old copper and sell it to a scrap metal dealer. A full house of 1/2-inch and 3/4-inch copper is worth $100-$400 in scrap.
When in doubt, size up. A 3/4 inch line costs marginally more than 1/2 inch but delivers significantly more flow.
Long runs need larger pipe. Friction loss increases with distance -- a 50-foot 1/2 inch run loses more pressure than a 10-foot run.
Home-run PEX manifold systems deliver better pressure to each fixture because each line is dedicated.
PEX is the best choice for most DIY repiping projects -- flexible, forgiving, and affordable.
Copper is worth the premium if longevity and resale value matter most.
Use push-fit fittings to transition between pipe types during repairs.

Research Phase

Shopping Tips

Mistakes to Avoid

Installation Prep

Helpful Resources

See Also