Pentair Water Bypass Assembly | ETi® 400 Heater | 475621 Trichloride Replace both components together to

Replace both components together to avoid reopening the connection a second time

A damaged or deteriorated flameholder can result in ignition failure

The volute is the wet-end housing that surrounds the impeller and directs water flow from the pump inlet through to the discharge port

The sweep hose assembly directs a pressurised water jet across the pool floor and walls to dislodge debris ahead of the cleaner's suction path

300-29 300-19 Optional component Pentair (formerly Rainbow) Automatic Feeder — Model 300

Pentair Water Bypass Assembly | ETi® 400 Heater | 475621 Trichloride Replace both components together toThe Pentair Water Bypass Assembly (475621) is the OEM replacement bypass assembly for the Pentair ETi 400 Heater, restoring proper water flow regulation within the heater's internal plumbing circuit. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high voltage components without proper