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
- 32Technical guides
- 16Repair & service
- 16Sourcing & trade
- FactoryWritten by makers
32 guides
August 5, 2026 · Repair & service · 6 min read
Jandy Check Valve Replacement: Fix a Failed Flapper Without Cutting Pipe
Spa draining down overnight or a flooded pad after shutdown usually means a worn check valve flapper. How Jandy swing check valves fail and how to replace the cover and flapper in place.
August 4, 2026 · Repair & service · 6 min read
Pentair SuperFlo Wet-End Rebuild: Parts Set, Seal Refresh and Reassembly Order
When a SuperFlo leaks or loses prime, the motor is usually fine — the wet end is worn. What a rebuild parts set covers, what to inspect, and the reassembly order that prevents callbacks.
August 4, 2026 · Repair & service · 6 min read
Pentair WhisperFlo Impeller Replacement: Symptoms, Teardown and Swap Procedure
Low flow with a low filter gauge usually means impeller trouble. Here is how to confirm it, open a WhisperFlo safely, and swap the impeller without breaking the clamp ring.
August 3, 2026 · Repair & service · 5 min read
Hayward TriStar Pump Rebuild: What's in a Wet-End Bundle and How to Use It
A practical TriStar rebuild guide: what the two wet-end bundles cover, a pre-order inspection checklist, and the assembly habits that keep a rebuilt pump sealed.
August 3, 2026 · Repair & service · 5 min read
How to Tell a Pool Pump Shaft Seal Is Failing — and How to Replace It
Drips under the pump, scale trails and bearing growl all trace back to one small part. Learn the symptoms of a failing shaft seal and the right way to replace it.
July 31, 2026 · Repair & service · 6 min read
Air in the Pool Filter: Causes, Bleeding and Air Relief Valve Replacement
Why air collects at the top of a filter tank, why a working air relief valve is a safety component, and how to replace manual and automatic relief parts on Hayward, Pentair and Sta-Rite filters.
July 31, 2026 · Repair & service · 6 min read
Hayward Super Pump Rebuild Guide: Diagnosing and Replacing Worn Wet-End Parts
How to diagnose a tired Hayward Super Pump wet end, run a complete rebuild, and decide when replacement beats repair — with an OEM-to-aftermarket cross-reference table.
July 26, 2026 · Repair & service · 3 min read
How the Hayward Super Pump shaft seal fails — and what actually replaces it
The SPX1600Z2 is the single most-replaced part on a Super Pump. Here is how to tell it has gone, which numbers supersede which, and what to check before you order a case.