This single-stage nitrogen purging regulator is designed for performance and economy, but with FEATUREs typically available in more expensive regulators. It is specifically designed for HVAC and other nitrogen pressure testing and blanketing applications. Both the 25GX-250 and 25GX-500 FEATURE a "T" bar for easier adjusting at high pressures. -- Medium to Heavy-Duty -- Pressure Regulation: 0.2 PSIG/100 PSIG -- Gauges: 2.5" Steel Dual Scale -- One-piece encapsulated seat design with internal filter and PTFE Teflon® seat. -- 7 Year Warranty -- Made in the USA -- -- -- HVAC and other nitrogen pressure testing and blanketing applications. -- CGA E-4