Using a solenoid valve to control an angle seat valve is a standard solution in industrial automation. The angle seat valve performs the actual media switching, while the solenoid valve directs compressed air to the actuator. This combination creates a reliable and highly repeatable automated solenoid valve control system.

Matching Principle Between Valves

Angle seat valves are divided into single acting and double acting types.

◆ Single acting valves require a 3 way solenoid valve because the spring provides the return force.

◆ Double acting valves need a 4 way solenoid valve or five-port configuration to supply air to two chambers alternately.

Taking an AIRTAC-style valve as an example, ports are marked A/B/P/R/S.

P connects to the air source, A and B connect to the actuator ports, and R/S are exhaust ports where silencers are normally installed. By energizing or de-energizing the coil, the industrial solenoid valves change flow direction and drive the angle seat valve.

Working Process

① Coil OFF – air flows from P to A, valve closes.

② Coil ON – air flows from P to B, valve opens.

This simple logic allows the system to meet requirements for high speed solenoid valve operation in steam, water, and gas control. Compared with electric actuators, pneumatic solutions offer better performance in humid or high-temperature environments.

Selection Considerations

When engineers choose a pneumatic solenoid valve for an angle seat valve, several factors are important:

◆ Coil voltage (24V DC / 220V AC)

◆ Flow capacity for solenoid valve flow control

◆ Response time

◆ Protection level and DIN connector solenoid valve wiring

If the valve is used in compressed air lines, a solenoid valve for compressed air with adequate Cv value should be selected; otherwise the actuator may move slowly.

Typical Configuration Table

Installation and Troubleshooting

To achieve stable performance in a solenoid valve for pneumatic systems, the distance between the solenoid valve and the angle seat valve should be as short as possible. Long tubing increases delay and reduces cycle life. During maintenance, check coil temperature, leakage at exhaust ports, and follow a solenoid valve maintenance and troubleshooting routine.

Application Scenarios

This control mode is widely used in food & beverage, water treatment, HVAC, and chemical processes. The combination of angle seat valve and automatic solenoid valve converts electrical commands into powerful pneumatic action, making it a core element of industrial automation solenoid valve uses.

(FK9025)