This is a pneumatically operated 2/2-way diaphragm valve from the GEMÜ 695 series. The designation "40D" indicates a nominal diameter of DN40 and likely a specific body design (D type). The description "PLASTIC" indicates that the valve body is made of plastic material (such as PVC, PP, or PVDF). These types of valves are typically preferred for corrosion-resistant applications. The pneumatic actuator allows for remote control of the valve