
Quick overview
- Genuine Pentair Factory part 51016200, cut and sized to the original valve seal.
- Fits both valve sizes Used on the 1-1/2 inch and the 2 inch Pac-Fab and ComPool diverter valves.
- 2 way and 3 way The same o-ring serves both the two port and the three port versions of the valve.
- Stops the drip at the lid A hardened or flattened o-ring is the usual reason a diverter valve seeps around the cover.
- Cheap insurance Worth changing any time the valve is opened to inspect or replace the diverter.
- Size marking The source lists this o-ring as both #2-151 and #2-152, so measure the old ring before fitting.
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Product details
Pentair 51016200 is the replacement o-ring for the Pac-Fab and ComPool diverter valves in both the 1-1/2 inch and 2 inch sizes, and it serves the 2 way and 3 way versions alike.
What it seals
The o-ring sits between the valve cover and the valve body. It is the only thing holding pressure at that joint, so when it hardens, flattens or takes a set from years of chlorine and heat, water starts to weep out around the lid. Owners often blame a cracked body when a two dollar seal is the real cause.
Before you fit it
The manufacturer information for this part is not consistent about the size designation. The product name calls it #2-151 and the description calls it #2-152, though both refer to Pentair part number 51016200. Compare the new ring against the old one before assembly, and lubricate it lightly with a silicone pool lubricant so it seats without pinching.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 51016200 |
| UPC | 788379693893 |
| Type | O-ring |
| Size reference | Listed as #2-151 in the product title and as #2-152 in the manufacturer description |
| Fits | 1-1/2 inch and 2 inch Pac-Fab and ComPool 2 way and 3 way diverter valves |
| Shipping weight | 0.02 lb |
| Ships | Parcel |
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