Pentair 263047 3-Way Solar Diverter Valve with Drain-Down | CPVC | 2" (2-1/2" Slip Outside)

The Pentair 263047 is a 3-way solar diverter valve with drain-down designed for pool solar-heating systems. It’s made from high-temperature CPVC to handle the elevated water temperatures common in solar applications and is used to divert, mix, or shut off flow between the pool circulation line and solar collectors.

Key Features

• Drain-down function: Helps drain water from solar panels/collectors when flow stops, reducing standing water in the solar loop.
• High-temp CPVC body: Better suited for solar heating lines where water temperatures can rise above typical pool plumbing temps.
• 3-way diverter design: Can be used for diverting, shut-off, or mixing applications.
• Actuator-ready: Designed to work with most industry-standard valve actuators.
• Field-adjustable stop positions: Allows you to set rotation limits for proper valve travel.
• Flexible plumbing orientation: Can be plumbed with the inlet on any port (follow your system layout and best practices).
• Pressure rating: Commonly listed up to 150 PSI (system dependent).

Plumbing Size / Connections

• Nominal size: 2"
• Connection style: 2" internal socket / 2-1/2" slip outside (common for this Pentair diverter valve family)
• Ports: 3-port (3-way)

Common Applications

• Pool solar heating systems (roof or rack-mounted solar collectors)
• Diverting flow to solar panels when heat is called for, then returning flow to normal circulation
• Systems using automation/actuators for solar control

When to Replace

• Valve handle is hard to turn, binds, or won’t hold position
• Water leaking at the stem or around the lid area
• Internal bypass/cross-leak causing poor solar performance or unexpected flow paths
• Cracked body from overtightened unions/fittings, freeze damage, or UV/age
• Drain-down function no longer works correctly (collector holds water when it should drain)

Installation Notes

• Shut off the pump and relieve system pressure before cutting into plumbing.
• Dry-fit first to confirm orientation and port routing for your solar feed/return layout.
• Use CPVC/PVC primer and cement appropriate for your pipe and fitting type.
• If using an actuator, confirm the stop positions and actuator cam settings before final operation.
• After installation, run the system and check for leaks at all joints once fully pressurized.

Related Products (Aqua Pool Supply)

• Pentair 263047 Solar Valve (Search)
• Pentair Valve Actuators (Search)
• Pentair Diverter Valve Replacement Parts (Search)
• 2" CPVC/PVC Plumbing Fittings (Search)
• Pool-Safe Silicone Lubricant (Search)

Maintenance Tips

• Never rotate valve positions while the pump is running unless your setup explicitly supports it—shut off the pump to reduce wear and seal damage.
• Keep the valve shaded when possible; UV exposure can shorten the life of external plastic components.
• If an actuator is installed, verify cams/stops are set correctly to prevent over-travel and premature seal wear.
• Before freezing weather, winterize the solar loop and verify the system can drain properly to prevent freeze damage.