Jandy | R0591608 | Pro Series Gas Orifice Kit – JXi 400 (NAT to LP Conversion)

The Jandy R0591608 Pro Series Gas Orifice Kit is a genuine OEM replacement designed for the JXi 400 series pool heaters. It facilitates the proper conversion from natural gas to liquid propane (LP) by delivering the correct orifice sizing and flow calibration to maintain safe, efficient combustion. 

Key Features

• Genuine Jandy OEM orifice kit for JXi 400 model pool heaters. 

• Designed specifically for LP (liquid propane) configuration (conversion from natural gas). 

• Includes precisely sized orifices and associated hardware calibrated for 400 kBtu heater models. 

• Made of corrosion-resistant materials suitable for heater burner environment.

• Direct-fit replacement that maintains manufacturer performance and warranty compliance. 

• Shipping weight approximately 1.1 lb. 

Product Overview
The Jandy R0591608 Gas Orifice Kit is a critical service part for the JXi 400 series pool heaters when switching fuel types or replacing worn orifices. Incorrect orifice sizing can lead to inefficient combustion, excessive emissions, flame instability, or failure to reach full rated heating capacity. This kit ensures the heater operates safely under LP gas conditions by restoring factory-specified orifice diameters and flow characteristics.

Installation requires a qualified technician to verify gas type, manifold pressure, and combustion parameters. Once installed, the R0591608 kit helps safeguard heater performance, supports full output, and protects system integrity. Ideal for commercial or high-demand residential applications, this OEM conversion kit provides a reliable solution for maintaining your JXi 400 in optimal working condition.