WDW1508 - Miller Smith WDW1508 LP Gas Pilot Light Replacement for Gas Savers

Technical Overview of the Miller Smith WDW1508

The Miller Smith WDW1508 is a precision-engineered replacement pilot light assembly designed specifically for Smith Equipment gas saver systems operating on Liquefied Petroleum (LP) gas. In industrial oxy-fuel applications, gas savers are critical for reducing operational costs and improving cycle times by automatically extinguishing the torch flame when the torch is hung up, while maintaining a small pilot flame for instant re-ignition. The WDW1508 serves as this critical ignition source, ensuring that the workflow remains uninterrupted.

Unlike universal pilot lights, the WDW1508 is calibrated with a specific orifice size and aeration geometry to suit the combustion characteristics of propane and propylene-based fuels. LP gas requires a different air-to-fuel ratio compared to acetylene to maintain a stable pilot flame that does not lift off or soot up the assembly. This component is manufactured to OEM specifications, ensuring it threads perfectly into existing Smith gas saver bodies without the need for adapters or modification. The assembly typically includes the burner tube and the gas jet, constructed from high-grade brass and copper alloys to resist the thermal cycling and oxidation inherent in welding and brazing environments.

Proper function of the pilot light is essential for the safety and efficiency of the gas saver unit. A worn or clogged pilot can lead to flame instability, requiring the operator to manually relight the torch, thereby negating the productivity benefits of the system. The WDW1508 provides a consistent, low-consumption flame that remains lit even in drafty shop environments, provided the gas pressure is set correctly. It is a direct replacement for the original pilot light found on Smith LP gas saver models, ensuring that the equipment continues to meet factory performance standards.

Installation involves removing the old pilot assembly, checking the gas ports for debris, and threading the new WDW1508 into place. It is recommended to leak-check the connection after installation to ensure system integrity. This part is strictly for LP gas applications and should not be used on acetylene systems due to the potential for unstable combustion.