The Gas Regulators are equipped with a 2 inch, color-coded cylinder contents gauge, a pressure relief valve and a DISS outlet fitting. The body of the regulator is brass and contains a sintered metal inlet filter and an encapsulated seat assembly module for long life and ease of maintenance. All regulators are chrome plated for durability and ease of cleaning. Flowgauge and Flowmeter models are equipped with an O2 DISS and a color-coded plastic tubing nipple. The Gas Regulators are available for oxygen and air in a choice of inlet fittings for E, G, H, or M cylinders. Features and Benefits Gas color coded, easy to read gauge Available in ranges Large, easy to grasp knob Ideal for transport