【Products Introduction】

The Model 4000ABP Back Pressure Precision Regulator is a non-vented design regulator that precisely controls the back pressure of the system.

【Specificities】

1、1/2 "Water pressure control sensitivity can be used for precision applications.

2、The relief valve is large enough to discharge high flow rates.

3、Compensation tube can compensate for upstream air pressure drop under flow conditions.

4、Independent control box separates the bulkhead from the main airflow to eliminate oscillation and vibration.

5, The machine construction allows you to service the Model 4000ABP without removing it from the system.

【Principles of operation】

When the set point is exceeded, the Model 4000ABP regulator uses the force balance principle to open the relief valve and discharge system pressure. Downstream pressure is transmitted through the tube to the bottom of the diaphragm assembly. When the adjusting screw is adjusted for a specific set point, the positive bias spring compresses and applies force to the top of the diaphragm assembly. As long as the pressure build-up on the bottom of the diaphragm assembly is less than the spring force applied to the top of the diaphragm assembly, the relief valve will remain closed. As the system pressure increases, the force applied to the bottom of the diaphragm assembly increases until the set point is reached. When the system pressure exceeds the set point, the assembly moves upward, lifting the relief valve from its base and discharging the gas. If the downstream pressure drops below the set point, the assembly moves downward to close the relief valve.