Pentair Water Bypass Assembly | ETi® 400 Heater | 475621 Trichloride The volute is the wet-end

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

Apply a coat of Pentair R172351 Lifeguard Silicone Lubricant to the O-ring before seating it — this helps it compress evenly

locate the part number molded or stamped on your existing valve assembly and match it to 270068

Pentair Bermuda Gunite Skimmer 506361 Bermuda Skimmer accessory — float valve assembly

Pentair Water Bypass Assembly | ETi® 400 Heater | 475621 Trichloride The volute is the wet-endThe 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