Pentair 261049 2″ Hi-Flow Multiport Valve (6-Position) – No Plumbing
The Pentair 261049 is a heavy-duty 2″ Hi-Flow multiport backwash valve designed for high-capacity sand and D.E. filter systems. This model is supplied as the complete valve body and handle assembly without the inlet/outlet bulkhead plumbing adapters, making it ideal when you need the valve but are reusing existing bulkheads/unions or installing the correct adapters separately.
Key Features
- High-flow 2″ internal porting for lower restriction and strong backwash performance
- 6-position operation for full filter system control
- Serviceable design with replaceable internal seals, diverter parts, and hardware
- Commercial-style durability for higher working pressures and demanding circulation systems
- Valve only (no plumbing) – bulkhead adapters/unions are selected separately to match your installation
Multiport Valve Positions
- Filter – normal filtration
- Backwash – cleans filter media by reversing flow
- Rinse – settles media and clears debris after backwash
- Waste – bypasses filter to drain
- Recirculate – bypasses filter media, returns water to pool
- Closed – shuts off flow (pump must be off)
Typical Applications
- High-capacity sand filters and D.E. filters that use a 2″ Hi-Flow multiport valve
- Commercial pools, large residential pools, and high-flow circulation systems
- Retrofits where the existing plumbing adapters are intact or need to be chosen separately
Important Fit & Sizing Notes
- Port size: 2″ Hi-Flow valve body (verify your filter/valve model requirements)
- Plumbing adapters: This listing is the valve body assembly only. If your installation requires bulkhead adapters/unions, purchase them separately.
- Orientation: Confirm whether your system requires a top-mount or side-mount configuration before ordering.
Common Reasons to Replace the Valve
- Water leaking to waste or returning when it should not (internal bypass/cross-porting)
- Handle is difficult to move, won’t index cleanly, or the top assembly is cracked
- Worn internal gaskets/seals causing poor filtration, weak backwash, or pressure issues
- Freeze/UV damage or cracked housing
Installation Notes
- Always shut off power and relieve all filter pressure before servicing or replacing a multiport valve.
- Dry-fit the valve and adapters first to confirm plumbing alignment and clearance for handle movement.
- After installation, perform a Backwash followed by a Rinse cycle before returning to Filter.
- Never change positions with the pump running to prevent seal damage.
Related Products (Aqua Pool Supply)
- Pentair 272422 Valve Top Assembly (Search)
- Pentair 271148Z Diverter (Spider) Gasket, 2″ Hi-Flow (Search)
- Pentair 274404 Bulkhead Adapter (Search)
- Pentair 274407 Bulkhead Adapter Nut (Search)
- Pool-Safe Silicone Lubricant (Search)
Maintenance Tips
- Do not force a stiff handle—inspect for debris intrusion and worn seals before continuing use.
- Keep the valve shaded when possible to reduce UV-related plastic aging.
- If you notice slow drips to waste while in Filter, inspect the diverter gasket and top assembly seals.
- When servicing internal parts, clean sealing surfaces thoroughly and lubricate O-rings lightly with pool-safe silicone lubricant.
