QDGAP - CK Worldwide QDGAP Gas Quick Connect Adapter - 9mm Male to 5/8-18 Female

Technical Overview of the CK Worldwide QDGAP

The CK Worldwide QDGAP is a specialized adapter designed to interface between standard threaded gas connections and modern quick-disconnect systems found on advanced welding power sources and coolers. This component is precision-machined from high-quality brass, ensuring durability and resistance to corrosion in industrial environments. The primary function of the QDGAP is to convert a standard 5/8"-18 Right-Hand (RH) female thread—commonly found on gas hoses and torch power cables—into a 9mm male quick-disconnect pin (often referred to as a spud).

In the context of gas-cooled TIG welding systems, maintaining a leak-proof shielding gas circuit is critical for weld quality. The QDGAP utilizes a robust mechanical design to ensure a tight seal when mated with a corresponding female quick coupler (such as the QDGAS). The 9mm pin diameter is a standard size in the industry, offering broad compatibility, though it is specifically engineered to tolerances that guarantee optimal performance with CK Worldwide equipment. The use of right-hand threads specifically denotes this fitting for inert gas use, adhering to safety standards that distinguish gas lines from left-hand threaded water lines (which would use the QDWAP counterpart).

Installation is straightforward: the threaded end of the adapter screws onto the existing gas nut of the torch cable or machine outlet. Once installed, the user can connect and disconnect the gas line instantly without the need for wrenches or thread seal tape for every setup change. This is particularly advantageous in shops where operators frequently switch between different torches or machine setups. By standardizing on quick disconnects, facilities can reduce wear on threaded fittings, which are prone to cross-threading or stripping over repeated cycles.

The QDGAP is rated for standard shielding gases including Argon, Helium, and Argon/Helium mixtures. It is not designed for water-cooled applications; users requiring a similar adapter for coolant lines must utilize the water-specific variant to prevent system contamination and safety hazards. This unit is sold individually and is an essential component for MRO inventories supporting high-production welding environments.