An ASME B16.36 flange is an orifice flange, which is a type of flange used for measuring the flow rate of fluids in a pipeline. It is defined by the American Society of Mechanical Engineers (ASME) standard B16.36. Orifice flanges have two pairs of pressure tappings, which are machined holes on the flange that allow the fluid pressure to be measured. The orifice plate, which is a thin plate with a calibrated hole, is installed between the flanges. The flow rate of the fluid is determined by the difference in pressure between the two sides of the orifice plate. ASME B16.36 flanges are available in a variety of materials, including carbon steel, stainless steel, and alloy steel. They are also available in a variety of sizes and pressure ratings. Here are some of the key features of ASME B16.36 flanges: They are used to measure the flow rate of fluids in pipelines. They have two pairs of pressure tappings. The orifice plate is installed between the flanges. They are available in a variety of materials and sizes. They are designed to meet the ASME B16.36 standard. Here are some of the applications of ASME B16.36 flanges: Oil and gas pipelines Chemical plants Power plants Water treatment plants Wastewater treatment plants Other industrial applications