BPV Precision Back Pressure Valve is a pneumatically actuated back pressure valve designed for simplified operation. By applying a pressure equivalent to the target back pressure value to the pilot port, the valve is instantly set. This pressure forces the flexible diaphragm downward onto the orifice plate, creating a seal. Rising inlet pressure lifts the diaphragm to release excess pressure through the outlet, while a drop in inlet pressure pushes the diaphragm closer to the orifice, restricting flow and restoring pressure equilibrium.

Advantage

• Frictionless diaphragm eliminates hysteresis, achieves 3x higher accuracy and <10ms response.
• Stable pilot pressure (<0.05% FS fluctuation) and diaphragm deformation algorithm ensure ≤±0.1% setpoint deviation.
• Typical Use: Microfluidic chip pressure supply, mRNA vaccine chromatography column control.