Abstract: A spray gun valve assembly is disclosed together with a method for manufacturing the same, wherein a spray gun valve plug (e.g., made of materials such as a tungsten carbide alloy) is secured to an end of an elongate valve stem (e.g., made of stainless steal) by resistance welding techniques. A holder component may act as an intermediate component between the plug and the valve stem, wherein the plug is resistance welded to the holder, and the holder is secured to the end of the valve stem. The method for securing the holder and the valve stem components can provide both a weld and a mechanical lock to secure these components together.