D4010 is a part of MPC Industries' line of air pressure regulators. It is designed to provide safe and reliable pressure regulation of both dry- and wet-gas systems. The regulator is used in a wide range of industries, including oil and gas, food processing, and chemical manufacturing. The D4010 is engineered for use with clean, dry, non-corrosive gases, and is able to handle pressures up to 100 psi. The regulator is equipped with a built-in relief valve for extra protection, and includes a reset knob for easy adjustment. The D4010 is durable and reliable, making it an ideal choice for industry professionals.