[Versatile Compatibility] With a 1/8 NPT and 0.4 MPT size, this valve is compatible with a wide range of air compressor systems. Its universal design makes it a practical solution for various applications, from home workshops to industrial environments. [Premium Quality and Durability] Made from solid brass, this air compressor tank fill valve offers exceptional durability and rust resistance, ensuring long-lasting performance even under high-pressure conditions. Its rugged construction makes it ideal for demanding industrial and workshop environments. [Protective Plastic Cap] Each valve comes with a black plastic cap that provides added protection during storage and transport. This cap helps prevent damage and ensures the valve remains in pristine condition until ready for use. [Compact and Lightweight] With a compact structure and lightweight design, this valve is incredibly easy to carry and install. Its portability makes it a convenient option for professionals who need reliable equipment on the go. [High Pressure Performance] Designed to handle extreme pressures, this valve has a nominal working pressure of 200 PSIG and a maximum working pressure of 300 PSIG. Its stable performance ensures reliable operation suitable for heavy-duty air compressor systems.