AR 191 External Thread Pressure Gauge — Key benefits and features Efficient argon usage: The AR 191 monitors argon pressure so you can maintain proper shielding gas flow and avoid overuse. Accurate pressure feedback helps reduce wasted gas and lowers operating costs during welding tasks. Secure CGA580 inlet connection: Built with a CGA580 thread to attach directly to standard argon gas cylinders. The correct thread compatibility minimizes leaks and ensures a stable, safe connection to your tank. Durable brass construction: Brass housing resists corrosion and stands up to conditions, providing reliable service and consistent pressure readings over time. Accurate pressure monitoring: Designed for precise measurement to help you keep welding conditions within the required range for clean, quality welds. 8 mm outlet nozzle for easy hookup: Includes an 8 mm outlet nozzle for straightforward attachment to hoses and downstream equipment. The standard size simplifies connections and reduces setup time. External thread design: The external thread pressure gauge form factor accommodates common regulator and tank setups while keeping the gauge accessible for quick checks. What this solves for you Prevents wasted shielding gas by letting you set and monitor the correct pressure, reducing the need to guess flow rates. Lowers risk of leaks and connection failures by using the CGA580 standard inlet thread for a secure fit. Improves weld quality by providing consistent, accurate pressure readings so you can maintain proper shielding conditions. Compatibility and performance Model: AR 191 Gas: Argon (designed for argon gas pressure monitoring) Inlet: CGA580 threaded connection (compatible with standard CGA580 argon cylinders) Outlet: 8 mm nozzle (fits standard 8 mm hose and fittings) Material: Brass construction for durability and corrosion resistance Function: External thread pressure gauge for realtime pressure monitoring and control Typical applications TIG and MIG welding shops: Keep shielding gas at the correct pressure for consistent arc stability and cleaner welds on stainless steel, aluminum, and other metals. Automotive and metal fabrication: Use for panel work, frame repairs, and custom fabrication where controlled argon flow reduces porosity and improves weld appearance. Hobbyist and small workshop projects: Easytoinstall gauge for home welders who need reliable pressure readings and a standard CGA580 connection to cylinders. Installation and use tips Thread the CGA580 inlet onto the cylinder valve handtight, then secure per cylinder manufacturer recommendations to ensure a leak connection. Attach an 8 mm hose to the outlet nozzle and check all fittings for tightness before opening the cylinder valve. Verify pressure readings before and during welding to maintain consistent shielding gas coverage. The AR 191 provides a straightforward, reliable way to monitor argon pressure, maintain welding quality, and reduce gas waste while fitting standard CGA580 tanks and 8 mm hose systems.