019054F 800920 Raypak AVIA Level 1 Bypass Assembly Regulates Water Flow And Protects Heat Exchanger For AVIA Model 264 Heater
The Raypak® AVIA Bypass Assembly Level 1 Flow Kit, part number 019054F / 800920, is a genuine OEM internal automatic bypass valve assembly designed exclusively for the Raypak AVIA Model 264 pool and spa heater. This component is engineered to control and stabilize internal water flow through the heater, ensuring proper hydraulic balance and long-term equipment protection.
Within the AVIA heater, the bypass assembly automatically diverts excess water flow around the heat exchanger when system flow exceeds optimal operating limits. This function is critical for preventing heat exchanger erosion, calcium scaling, thermal stress, and flow-related fault conditions. The Level 1 flow configuration is intended for standard residential plumbing and circulation systems as specified for the AVIA 264 platform.
A failing or incorrectly calibrated bypass assembly can lead to inconsistent heating, flow error codes, short cycling, reduced efficiency, or premature internal component wear. Replacing the bypass assembly with the correct OEM Level 1 flow kit restores proper flow regulation and helps maintain stable heater performance.
This assembly is supplied as a factory-calibrated unit and is identified by markings 800920 and REV 8, confirming the correct revision and configuration. According to Raypak service documentation, part number 019054F is specified only for AVIA Model 264 heaters and is not interchangeable with bypass kits used on other AVIA models.
019054F 800920 Raypak® AVIA Model 264 Bypass Assembly Level 1 Flow Kit Key Features & Benefits
• Genuine Raypak® OEM bypass assembly
• Designed exclusively for AVIA Model 264 heaters
• Level 1 flow calibration for standard residential systems
• Automatically regulates internal heater water flow
• Protects the heat exchanger from excessive flow and scale damage
• Helps prevent flow-related shutdowns and error codes
• Factory-calibrated spring and valve assembly
• Correct REV 8 specification for proper fit and performance
Installation & Important Notes
Installation requires removal of the inlet-outlet header and access to internal heater components. Water, gas, and electrical power must be shut off before service. Proper handling and reinstallation of O-rings, bypass dam, spring, and valve components are essential for leak-free operation and correct flow control. Torque specifications and reassembly procedures must be followed exactly. Professional installation by a qualified pool service technician is strongly recommended due to the complexity of heater disassembly and internal component replacement.
Part Number Section
Primary Part Number: 019054F
Assembly Number: 800920
Revision Marking: REV 8
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