Orifice Flange with Bolts is designed for flow metering systems. The Orifice Flange comes with bolts and jack screws are used in conjunction with an "orifice plate." The Orifice Flange is provided with a pair of pressure taps for measurement of pressure drop in the flow through the orifice plate. The Orifice Flange with Bolts is available in three types such as welding neck, slip-on and threaded.