Pool Chlorinator Parts & Diagrams

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Find Hayward pool chlorinator parts by model. Pick your chlorinator in the diagrams below, or browse lids, O-rings, control valves, tubing, check valves and pump tubes for Hayward CL100, CL110, CL200 and CL220, Pentair Rainbow and ChemStar chlorinators and Stenner and Rola-Chem peristaltic pumps.

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Pool Chlorinator Parts and What They Do

Most chlorinator problems come down to a few wear parts, so a leaking or misbehaving feeder can usually be fixed without a new unit.

  • Lids and lid O-rings. The most common replacement. A lid that leaks or won’t seal usually needs a new O-ring; a cracked lid needs replacing.
  • Control valves and dials. The valve sets how fast the tablets dissolve. One that is stuck or cracked leaves chlorine levels you can’t control.
  • Tubing, saddle clamps and fittings. Off-line chlorinators connect with tubing that hardens and cracks with age. Replace it before it splits.
  • Check valves. A check valve keeps chlorinated water from flowing back into the heater when the pump stops.
  • Pump tubes, rollers and injection fittings. On a peristaltic pump the squeeze tube is the part that wears, so keep a spare for your Stenner or Rola-Chem pump.

Finding the Right Chlorinator Part

Chlorinator parts are model-specific. The Hayward CL200 (in-line) and CL220 (off-line) share their lid and cover parts, but those don’t fit a CL100 or a Pentair Rainbow.

Find the model. It is molded or printed on the body or lid. Hayward models start with CL; Pentair Rainbow models are numbered 300, 320 and so on.

Use the diagrams. Pick your chlorinator in the diagrams at the top of this page and match the part by its number on the drawing.

If the body is cracked, or the parts you need cost close to a new unit, replacing the chlorinator is often simpler. Shop pool chlorinators.

Frequently Asked Questions about pool chlorinator parts

Why is my chlorinator lid leaking?
The lid O-ring is usually worn, dirty or dried out. Replace it with the O-ring made for your model. If the lid itself is cracked or its threads are damaged, replace the lid.
Do Hayward CL200 and CL220 parts interchange?
Many do. The CL200 (in-line) and CL220 (off-line) share their lid and cover parts. The bodies and plumbing parts differ, so check the part number on the diagram for your model.
What does the check valve on a chlorinator do?
It stops chlorinated water flowing back from the chlorinator into the heater when the pump stops. A failed check valve can let concentrated chlorine damage the heater.
How often should I replace a peristaltic pump tube?
The squeeze tube is the wear part of a peristaltic pump. Inspect it regularly and replace it when it loses its spring, cracks or starts to leak. Keeping a spare avoids downtime.
How do I open my chlorinator safely?
Turn the pump off, release the pressure, then open the lid with your face away from the opening. Wear gloves when handling tablets.

Shop Pool Chlorinator Parts

Shop our selection of pool chlorinator parts and get your feeder sealing and dosing again. EZ Pools carries lids, O-rings, control valves, tubing, check valves and pump tubes for Hayward, Pentair Rainbow, Stenner and Rola-Chem, in stock and ready to ship.