Zodiac R0453900 Bypass Polymer Adjustable Spring Kit

Product Description

The ZODIAC R0453900 is a bypass polymer adjustable spring replacement kit designed for use in pool and spa heater systems. This kit restores proper bypass valve function, allowing the heater to regulate water flow and maintain correct operating pressure. Made from polymer construction, it resists corrosion and chemical degradation common in pool and spa environments. At 0.25 pounds and compact in size, it is a direct service part intended for installation by licensed pool and spa technicians or qualified service professionals performing preventive maintenance or component-level repairs on affected heater models.

This replacement spring kit is compatible with Zodiac Jandy Legacy and LXi Low NOx pool and spa heater models, specifically LRZE, LRZM, 250, 300, and 400. It is suited for both residential and light commercial pool and spa installations where these heater models are in service. Technicians replacing worn or fatigued bypass springs during routine heater servicing will find this kit a direct fit for the listed models.

Key Features

• Polymer construction resists corrosion and chemical exposure in pool and spa environments
• Adjustable spring design allows proper bypass valve calibration during installation
• Compact and lightweight at 0.25 pounds for easy handling during service calls
• OEM replacement kit engineered to fit Jandy Legacy and LXi Low NOx heater models
• Manufactured in the United States

Compatibility

Compatible with Zodiac Jandy Legacy and LXi Low NOx pool and spa heater models LRZE, LRZM, 250, 300, and 400.

Installation Notes

Installation should be performed by a licensed pool and spa technician or qualified service professional. Before servicing, shut down the heater, turn off the gas supply if applicable, and relieve system water pressure before disassembling bypass valve components. Refer to the heater manufacturer service manual for the correct bypass valve assembly sequence and spring adjustment procedure.