Accurate nitrogen pressure tester and regulator designed for reliable pressure checks on HVAC, automotive, and central air systems. Key benefits Accurate readings: Provides precise nitrogen pressure measurements so you can verify system integrity and avoid under- or over-pressurizing equipment. Easy-to-read display: Large dial (3.54 inch diameter) makes pressure values quick to read on the job, reducing errors and speeding inspections. Durable construction: Built from solid brass for corrosion resistance and long service life in workshop and field environments. Compact and serviceable size: Overall length of approximately 12.99 inches balances reach and portability for use in confined spaces. What it solves Confirms pressure-tight connections and lines before charging with refrigerant or bringing systems online. Reduces rework and downtime by allowing fast, dependable pressure checks during installation, maintenance, and repair. Minimizes risk of damage to components caused by improper pressure testing thanks to accurate control and reliable gauge reading. Key specifications Function: Nitrogen pressure testing and regulation Overall length: ~12.99 inches Dial diameter: ~3.54 inches (large, easy-to-read gauge) Material: Brass body and fittings for durability and corrosion resistance Practical applications and use scenarios HVAC installation: Verify line sets and brazed connections on residential or commercial air conditioning systems before evacuation and refrigerant charging. Automotive service: Pressure-test automotive A/C lines and components to locate leaks or confirm repairs prior to recharging the system. Central air systems: Check pressure integrity on central HVAC distribution lines and duct-mounted service valves during commissioning or preventive maintenance. Why choose this tester Straightforward, professional tool: Designed for technicians and installers who need a simple, reliable way to measure and regulate nitrogen pressure. Built to last: Brass construction and a clear, large gauge reduce replacement frequency and improve confidence in field measurements. Versatile compatibility: Suited for a wide range of pressure-testing tasks across HVAC, automotive, and central air applications. Usage tips Use appropriate regulators and safety practices for working with pressurized nitrogen. Verify connections are tight and use proper adapters as required for specific system fittings. Read the gauge at eye level for the most accurate visual reading from the 3.54 inch dial. This nitrogen pressure tester offers accurate measurement, robust brass construction, and a large, readable gauge in a compact 12.99 inch package—built to help professionals perform dependable pressure tests across HVAC and automotive systems.