Damper and back pressure valve in metering pump

Damping (damping) is the characteristic of any vibration system in the vibration, due to external effects and/or the inherent vibration of the system itself, and the quantitative characterization of this characteristic.

Back pressure is the pressure generated in the hydraulic device due to downstream resistance or component impedance ratio changes at the inlet and outlet.

Back pressure refers to the pressure after the exit of a safety valve or trap. For example, if it is directly discharged into the atmosphere, the back pressure is zero. If it is discharged into a pressured tank, the pressure inside the tank is a constant pressure of 0.3 MPA. Back pressure is 0.3MPA.

For a safety valve, the back pressure is the pressure at the outlet side of the safety valve (absolute pressure)

Safety valve: When the pressure in the system and pipeline is too high, it can release pressure in time, protect the pump and recover the liquid. Also used as a pressure relief valve.

Back pressure valve: Under the condition that the pipeline or equipment container pressure is unstable, the required pressure in the pipeline can be maintained so that the pump can output the flow normally. In addition, the siphon phenomenon often occurs at the outlet of the pump due to gravity or other effects. At this time, the back pressure valve can reduce the flow and pressure fluctuations caused by the siphon.