Its pressure regulation principle is different from the previous "pressure relief valve principle", but uses pressure sensors to sense the system's pressure, and then feeds it back to the control pump to regulate and maintain a constant pressure through the pump's working cycle. When the flow rate changes, the pressure is not affected. Due to the fact that in most cases, the working state of the pump is in an "intermittent" state, the pump has high efficiency and low heat generation, making it suitable for situations where pressure is adjustable, stable, and requires long-term operation. At the same time, it can provide stable negative pressure for sample extraction and purification operations in biochemical experiments.

Dual position "LED" pressure display.
Adjusting the vacuum pressure of the pump through a knob is convenient to operate.
There are two interfaces, positive pressure and negative pressure, which are widely used.
Double pump head design, doubling the flow rate.

model: AP-9950B
Vacuum pressure: ≥ 80KPa
Pressure: 20Psi
Flow rate: 50L/min
Power: 180
Power supply: 220V/50Hz
Dimensions (LxWxH) (mm): 269 * 210 * 155
Weight: 8.2Kg