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Mastercool Nitrogen Pressure Regulator Kit   Product Description Mastercool’s new nitrogen regulator is specifically designed to meet the specifications of HVAC/R and automotive A/C systems. This single stage nitrogen regulator is used to test systems for leaks when they do not contain refrigerant. 1/4” SAE flare outlet port, with control valve, to keep pressure on the regulator at all times T-Handle for ease of pressure adjustment 63 mm (2 1/2”) gauges with guards High pressure gauge 4400 psig (300 bar) Low pressure gauge 1000 psig (70 bar)  

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