Integrated orifice flowmeter are those that the manufacturer of the flowmeters assembles the throttling device with the break valve, condenser (condensational circle), pressure-leading tube, three-valve manifold and Differential-pressure transmitter, according to the requirements of the clients, before sending them to the clients. When the clients receive the goods, they just need to weld the flanges and pipes, insert the cable of the Differential-pressure transmitter, and then it can come into use.