How to achieve both blowing (pressurization) and sucking back (reverse suction) with the same diaphragm pump?

Due to the structure and working principle of a diaphragm pump (which incorporates internal check valves), the fluid flow direction is fixed, making reverse suction impossible. Therefore, customers often ask: how can the same diaphragm pump be used in the same fixture or piping system to achieve both forward pressurization (blowing) and reverse suction (venting)?

Internal structure diagram of the diaphragm pump:

In practice, using two low-cost 3/2-way solenoid valves can achieve the function required by the customer:

Pneumatic schematic diagram: