
Quick overview
- Genuine Pentair Factory part 261142, the hi-flow side mount valve kit.
- Two inch hi-flow body The larger bore valve, not the 1.5 inch side mount version.
- Filter or backwash The side mount valve is what sends flow through the filter or out to waste.
- Listed fitment Pentair lists it for FNS, FNS Plus and NSP filters.
- Port spacing matters The centerline between the valve and filter ports is 7.5 in., so measure your tank before ordering.
- Supplied as a kit Sold as the valve kit rather than a bare valve body.
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Product details
The Pentair 261142 is the hi-flow side mount valve kit in the 2 inch size, the genuine Pentair replacement for the backwash valve that sits on the side of a DE filter tank. Pentair lists it for FNS, FNS Plus and NSP filters.
What the valve does
The side mount valve is the handle you turn to send water through the filter, out to waste on a backwash, or to close the tank off for service. When the internals wear, the valve starts passing water to waste while in filter, sticks between positions, or leaks around the shaft. At that point rebuilding a badly worn body is usually poor value against fitting the complete kit.
Check before you order
Two things decide whether this valve fits. The first is size: this is the 2 inch hi-flow body, and a 1.5 inch side mount tank needs the smaller kit. The second is spacing: the valve is built around a 7.5 in. centerline between the valve and filter ports, so measure the two ports on your tank.
One note on the connections. The product title describes the valve as 2 inch slip, while the product summary describes it as 2 inch with bulkhead fittings. Both readings appear in the manufacturer supplied information, so compare the photograph against your existing plumbing before ordering.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 261142 |
| UPC | 788379674403 |
| Type | Hi-flow backwash valve kit |
| Mounting | Side mount |
| Size | 2 inch |
| Connection, per the product title | 2 inch slip |
| Connection, per the product summary | 2 inch with bulkhead fittings |
| Port centerline | 7.5 in. between valve and filter ports |
| Fits | FNS, FNS Plus and NSP filters |
| Shipping weight | 10.55 lb |
| Ships | Parcel |
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