Pentair Lid, New B Style | Rainbow 330 Floating Dispenser | R18729B
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- SKU:
- R18729B
-
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About This Item
The Pentair R18729B is the OEM replacement lid for the Rainbow 330 Floating Dispenser — specifically the new "B" style body. If your dispenser lid is cracked, warped, or no longer sealing correctly, this is the direct factory replacement.
IMPORTANT: CONFIRM YOUR BODY STYLE BEFORE ORDERING
The Rainbow 330 Floating Dispenser was produced in two body configurations. This lid (R18729B) fits the new "B" style body only. It is not interchangeable with the original "A" style body. Check your existing dispenser body or the original part number before ordering to ensure correct fitment.
The lid seals the chemical chamber of the Rainbow 330 Floating Dispenser, controlling access to the tablet compartment and maintaining the integrity of the chlorine or bromine dosing mechanism. A damaged or ill-fitting lid compromises chemical containment and can affect dispenser performance.
Specifications
| Pentair Part Number | R18729B |
| Description | Lid only, new style, fits "B" body |
| Quantity Included | 1 (Each) |
| Body Style Compatibility | New "B" style body only |
| Legacy Brand | Pentair (formerly Rainbow) |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair (formerly Rainbow) | Extensions / Dispensers / Flow Indicators | 330 | New style – fits "B" body only |
| Pentair (formerly Rainbow) | Extensions / Dispensers / Flow Indicators | R171086 | Lid only, new style, fits "B" body; for Model 330 floating dispenser |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Poolaroo Pro Tip
When inspecting the Rainbow 330 before ordering, look for the body style designation molded into the dispenser housing or printed on the original part label. The "B" style body has a distinct lid thread profile that differs from the original "A" style — a lid from one style will not seat or seal correctly on the other. Replacing a damaged lid promptly prevents chemical splashing and ensures accurate tablet exposure to pool water.
