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.