Guides & cross-reference notes

How these parts actually fail, and what replaces them.

Fitment guides, cross-reference charts and repair notes for Hayward, Pentair, Jandy, Sta-Rite and Zodiac equipment — written by the people who mould the parts, not by a copywriter.

  • 01 · Worn lid O-ringCause: Dry run · Result: Leak
  • 02 · Cracked lidCause: Over-tightening · Result: Cracks / leaks
  • 03 · Impeller wearCause: Cavitation · Result: Low flow
  • 42Technical guides
  • 20Repair & service
  • 22Sourcing & trade
  • FactoryWritten by makers

42 guides

Moulded part in an inspection fixture with a dial indicator on its sealing face

Latest · September 25, 2026 · 5 min read

From OEM Sample to First-Article Inspection: How Dimensional Verification Works

The chain from an original part to a production run has five links. Knowing which one your supplier is weakest at tells you where the returns will come from.

Read the guide →