Solenoid Control Valve Solenoid Control Valve 1. Main Valve2. Needle Valve3. Solenoid Valve4. Ball Valve5. Strainer Function 1. 2-way solenoid-energized to open the valve.2. 2-way solenoid-de-energized to close the valve.3. 4-way solenoid for special service conditions can be consulted. Download Brochure