Pentair 261173 1.5″ Threaded Multiport Valve
Part Number: 261173
Description
This multiport backwash valve is designed for sand and D.E. pool filters with 1½″ threaded ports. It delivers efficient water flow control through six key positions plus a Winterizing mode, helping maintain optimal filtration performance.
Compatibility & Fitment
- Fits many Pentair sand and D.E. filter tanks requiring 1½″ FNPT threaded connections.
- Ideal for side-mount filter setups where access and serviceability are needed.
- Replaces older or failing multiport valves showing leaks, sticking, or reduced functionality.
Features & Specifications
- Connection size: 1.5″ female NPT threaded ports.
- Operation: positive-lock lever with six service positions plus Winterizing.
- Body material: durable injection-molded PVC designed for pool chemical and UV exposure.
- Includes standard spring, handle and lever; valve assembly sold complete.
Installation Notes
Turn off pump power and relieve system pressure before service. Remove old valve assembly and inspect filter flange and manifold for damage. Install new 261173 valve, ensure correct alignment of ports, plumbing and handle orientation. Re-assemble, fill system, check for leaks at start-up, and cycle through all positions to confirm smooth operation.
Maintenance Tip
Inspect annually for wear, leaks or difficulty in turning the valve lever. Replace if the handle slips, sealing is compromised or the valve drifts out of position under pressure. Using this OEM valve restores serviceability and maintains system efficiency.
