Choke Manifold, is downstream of the flowhead. Its principal function is to control flowrate and pressure. Fluid flows from the flowhead to the choke manifold, where flowrate and pressure are reduced by the restrictive orifices in the choke manifold.
Choke manifold consists of four gate valves, (five if a bypass valve needed), a positive choke, an adjustable choke, and several pressure or sampling ports to monitor pressure or fluid characteristics.