Item Type: Air Compressor Pressure Regulator Air Inlet Thread: G1/2in Air Outlet Thread: G1/2in Product Material: Aluminum alloy, stainless steel. Operating Pressure: 0.5-3.6Mpa, that is, 72.5-522.1 PSI. Package List 1 x Air Compressor Pressure Regulator 1 x Pressure Gauge 1Pressure Control: From 72.5psi to 522.1psi, that is, 0.5-3.6Mpa, the relief valve can control the air pressures for stable working performance. 2Standard Design: Comes with G1/2in inlet and outlet, the standard air compressor pressure regulator also has pressure gauge for easy operation. 3No More Leakage: Good sealing ensures no leakage, so the air pressure regulator can withstand a high pressure and maintain a constant pressure. 4Better Material: Adopting premium aluminum alloy and stainless steel materials, the air regulator valve is not easy to malfunction and durable. 5Easy to Install: Light in weight and compact in size as well, this pressure valve with gauge is very convenient to install in several minutes.