TL;DR: Installing the Pentair 263028 2-inch to 2.5-inch 3-way Compool valve takes 1–2 hours and requires basic plumbing skills. This automated diverter valve directs water flow between pool equipment (heater, spa, cleaner) based on automation system commands. Proper installation ensures reliable automated water routing, prevents leaks, and enables seamless pool/spa operation. Professional installation recommended for complex plumbing configurations.
SEO Summary: This 2026 guide provides complete step-by-step instructions for installing Pentair 263028 3-way Compool valve including sizing, plumbing, wiring, and testing procedures for automated pool systems.
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Table of Contents
Valve Overview and Function
The Pentair 263028 3-way Compool valve is an automated diverter valve that routes water flow between three ports based on automation system commands.
Valve Description:
- Part Number: Pentair 263028
- Type: 3-way automated diverter valve
- Size: 2-inch to 2.5-inch (accommodates both pipe sizes)
- Material: CPVC (chemical and heat resistant)
- Actuation: Electric motor-driven (24V AC typically)
- Ports: Three ports for water routing
Function and Purpose:
- Automatically diverts water flow between equipment
- Controlled by automation system (IntelliTouch, EasyTouch, Compool)
- Enables pool/spa switching
- Routes water to heater, cleaner, or bypass
- Eliminates manual valve operation
- Integrates with complete pool automation
Common Applications:
- Pool/spa diverter (routes water to pool or spa)
- Heater bypass (routes water through or around heater)
- Cleaner control (directs water to pool cleaner)
- Solar routing (directs water to solar panels or bypass)
- Multi-equipment switching
- Works with Pentair Compool automation systems
Benefits of Automation:
- Hands-free operation (no manual valve turning)
- Precise water routing control
- Scheduled equipment operation
- Remote control capability
- Prevents operator error
- Extends equipment life through proper operation
Planning and Sizing
Proper planning ensures correct valve selection and optimal placement.
Valve Sizing:
- 2-inch ports: For 2-inch PVC plumbing
- 2.5-inch ports: For 2.5-inch PVC plumbing
- Verify existing plumbing size before purchasing
- Match valve size to pipe size for optimal flow
- Undersized valve restricts flow (reduces efficiency)
- Oversized valve may not seal properly
Port Configuration:
- Port 1: Common port (typically from pump)
- Port 2: First diverter port (e.g., to pool)
- Port 3: Second diverter port (e.g., to spa)
- Flow Direction: Water enters common port, exits through Port 2 or 3
- Verify: Port configuration matches your application
Placement Considerations:
- Install after pump, before equipment
- Locate in accessible area for service
- Ensure adequate clearance for actuator
- Protect from direct sunlight when possible
- Mount with actuator on top (prevents water damage)
- Plan wire routing to automation system
System Compatibility:
- Compatible with Pentair Compool systems
- Works with IntelliTouch automation
- Compatible with EasyTouch systems
- Requires 24V AC power from automation system
- Verify automation system has available valve circuit
Tools and Materials Needed
Proper tools ensure efficient installation and prevent damage.
Required Tools:
- Hacksaw or PVC pipe cutter
- Measuring tape
- Sandpaper or deburring tool
- Adjustable wrench
- Wire strippers and cutters
- Screwdrivers (Phillips and flathead)
- Level
- Safety glasses
Required Materials:
- Pentair 263028 3-way Compool valve
- PVC primer and cement (heavy-duty)
- 2-inch or 2.5-inch PVC pipe (as needed)
- PVC fittings (elbows, couplings as needed)
- Low-voltage wire (18–22 gauge, 2-conductor)
- Wire nuts or terminal connectors
- Cable ties or wire management clips
- Electrical tape
Optional But Recommended:
- PVC pipe supports or hangers
- Valve mounting bracket
- Additional lube-free diverter valves for other applications
- Multimeter for voltage testing
- Camera for documentation
- Quality ball valves for isolation
Preparation and Safety
Proper preparation prevents mistakes and ensures safe installation.
System Shutdown:
- Turn off pool pump at breaker
- Turn off automation system power
- Close isolation valves if available
- Drain water from installation area
- Verify all power disconnected
Planning Layout:
- Measure existing plumbing configuration
- Determine valve orientation and position
- Plan pipe cuts and fitting requirements
- Sketch plumbing layout with measurements
- Identify wire routing path to control panel
- Verify adequate space for valve and actuator
Workspace Preparation:
- Clear area around installation location
- Ensure adequate lighting
- Have all tools and materials ready
- Protect surrounding areas from PVC cement
- Ensure stable footing and access
Safety Considerations:
- Wear safety glasses (protect from PVC cement fumes)
- Work in well-ventilated area
- Avoid skin contact with PVC cement
- Keep children and pets away
- Have fire extinguisher nearby (PVC cement flammable)
- Follow NEC requirements for electrical work
Plumbing Installation
Proper plumbing installation ensures leak-free operation and optimal water flow.
Pipe Preparation:
- Measure and mark pipe cut locations
- Cut pipes square and perpendicular
- Deburr all cut ends with sandpaper
- Test-fit valve and fittings before gluing
- Verify valve orientation correct for application
- Ensure actuator positioned on top
Dry Fit Assembly:
- Assemble entire valve section without glue
- Verify all pipes align properly
- Check valve orientation and port configuration
- Ensure adequate clearance for actuator
- Mark pipe and fitting alignment
- Disassemble for gluing
Gluing Procedure:
- Apply PVC primer to pipe ends and valve sockets
- Allow primer to dry 10–15 seconds
- Apply PVC cement to both surfaces (generous coat)
- Insert pipe into valve socket with twisting motion
- Align marks made during dry fit
- Hold for 30 seconds to ensure bond
- Wipe excess cement immediately
- Repeat for all three valve ports
Support and Alignment:
- Support valve with pipe hangers or brackets
- Ensure valve level and properly aligned
- Verify no stress on valve body from pipes
- Allow adequate clearance for actuator movement
- Check that all joints properly seated
Curing Time:
- Allow 15 minutes minimum before handling
- Wait 2 hours before pressure testing
- Full cure: 24 hours for maximum strength
- Temperature affects cure time (longer in cold weather)
- Don't stress joints during curing
Electrical Wiring
Proper wiring ensures reliable valve operation and prevents damage.
Wire Routing:
- Plan wire path from valve to control panel
- Use existing conduit if available
- Keep low-voltage wires separated from high-voltage
- Avoid sharp bends or kinks in wire
- Secure wires with cable ties every 12–18 inches
- Leave adequate slack at both ends
Valve Wiring:
- Locate valve actuator terminal block
- Identify wire terminals (typically 2 wires for 24V AC)
- Strip wire ends 1/4 inch
- Insert wires into terminal block
- Tighten terminal screws securely
- Verify no stray wire strands
- Label wires for future reference
Control Panel Connections:
- Turn off power to control panel
- Locate valve circuit terminals (consult manual)
- Identify correct terminal block for valve
- Connect wires to valve circuit terminals
- Match polarity if specified (typically not critical for AC)
- Tighten all terminal connections
- Verify connections match wiring diagram
Testing Wiring:
- Use multimeter to verify 24V AC at valve terminals
- Check for proper voltage when valve activated
- Verify no shorts or ground faults
- Test continuity of wire run
- Ensure all connections secure
Testing and Verification
Thorough testing ensures proper installation and operation.
Pressure Testing:
- Restore power to pump
- Start pump and pressurize system
- Check all glued joints for leaks
- Inspect valve body for leaks
- Verify no water seepage from actuator
- Monitor for 10–15 minutes under pressure
Valve Operation Testing:
- Restore power to automation system
- Access valve control from control panel
- Command valve to Port 2 position
- Verify valve actuator moves smoothly
- Check water flow to correct port
- Command valve to Port 3 position
- Verify valve switches properly
- Test multiple cycles for reliability
Flow Verification:
- Verify water flows to correct equipment in each position
- Check flow rate adequate in both positions
- Ensure no backflow or cross-flow between ports
- Confirm valve seals completely in each position
- Monitor pressure gauge readings in each position
Automation Integration:
- Test valve operation from automation schedules
- Verify valve responds to mode changes (pool/spa)
- Check valve status displayed correctly on panel
- Test remote control if ScreenLogic installed
- Verify all automated functions work properly
Final Checks:
- Verify all plumbing connections leak-free
- Check electrical connections secure
- Ensure valve operates smoothly without binding
- Confirm proper water routing in all positions
- Document valve position and wiring for future reference
Troubleshooting Common Issues
Addressing problems quickly restores automated valve operation.
Valve Won't Move:
- Cause: No power to valve actuator
- Solution: Check wiring connections, verify 24V AC at terminals
- Cause: Valve circuit not enabled in automation system
- Solution: Enable valve circuit in system configuration
- Cause: Actuator motor failure
- Solution: Replace valve actuator
- Cause: Valve body jammed or obstructed
- Solution: Inspect valve, remove obstruction
Leaks at Valve Joints:
- Cause: Insufficient PVC cement applied
- Solution: Cut out joint, redo with proper cement
- Cause: Joint moved during curing
- Solution: Cut out and redo with proper hold time
- Cause: Dirty or wet surfaces during gluing
- Solution: Cut out, clean properly, reinstall
Valve Doesn't Seal Completely:
- Cause: Debris in valve body
- Solution: Flush system, clean valve if accessible
- Cause: Worn valve diverter
- Solution: Replace valve
- Cause: Actuator not fully rotating
- Solution: Check actuator calibration, replace if faulty
Incorrect Water Routing:
- Cause: Valve installed backwards
- Solution: Verify port configuration, reinstall if needed
- Cause: Wiring polarity reversed
- Solution: Swap wires at control panel or valve
- Cause: Valve position not calibrated
- Solution: Recalibrate valve in automation system
Conclusion and Key Takeaways
Installing the Pentair 263028 2-inch to 2.5-inch 3-way Compool valve takes 1–2 hours and requires basic plumbing and electrical skills. This automated diverter valve enables hands-free water routing between pool equipment based on automation system commands. Proper installation ensures reliable operation, prevents leaks, and provides years of convenient automated pool control.
Essential Takeaways:
- 3-way valve diverts water between three ports automatically
- Size valve to match existing plumbing (2-inch or 2.5-inch)
- Install after pump, before equipment requiring water routing
- Turn off all power before starting installation
- Plan plumbing layout and valve orientation carefully
- Dry fit entire assembly before gluing
- Use PVC primer and cement for all joints
- Support valve with hangers to prevent stress
- Allow 2 hours minimum before pressure testing
- Route low-voltage wires away from high-voltage lines
- Connect valve to automation system valve circuit
- Test valve operation in all positions before completing
- Verify no leaks at all plumbing connections
- Confirm proper water routing in each valve position
- Use quality check valves for backflow prevention
- Add lube-free diverters for additional routing
- Install ball valves for manual isolation
- Maintain with replacement check valves
- Professional installation recommended for complex configurations
- Shop quality plumbing parts from our pool parts collection
Follow these installation steps systematically for professional-quality results. Proper valve installation provides years of reliable automated water routing and convenient pool/spa operation. The investment in automation pays dividends in convenience, efficiency, and extended equipment life.
