Pneumatic solenoid valve, 2-position 3-port, normally closed, single solenoid, is used to handle the flow of air with long service life and high reliability under the working voltage of 12V DC, 24V DC, 110V AC or 220V AC, and widely used in the industrial fields like chemical, petroleum, pharmaceutical, automotive, light industry, food, mineral processing, electroplating, metallurgy, textiles etc.

Specification

Dimensions
(body length unit = mm, port size unit = inch)

Solenoid Valve Symbol (Flow Diagram)

Tips: Differences between pilot-operated and direct acting solenoid valve

1. Pressure tolerance
The pilot-operated solenoid valve has a higher tolerance of liquid pressure than the direct acting solenoid valve.

2. Response time
The starting speed of the direct acting solenoid valve is quicker than that of the directly operated type. It is mostly used for the occasion of fast connection and disconnection. Because the small valve opens in the first and the main valve opens later when the pilot-operated solenoid valve is supplied with power. Instead, the directly operated solenoid valve is opened with its main valve directly. When the pilot-operated solenoid valve is energized, the small valve opens at the first and the main valve opens later. However, as to the direct acting solenoid valve, the main solenoid opens directly.

3. Flow capacity
The flow capacity of the pilot-operated solenoid valve is bigger than that of the directly operated type. Generally, the CV value can reach 3 or above.

4. Power and consumption
The power and consumption of the directly operated solenoid valve are higher than that of the pilot-operated type.

5. Purity of the medium
The pilot-operated solenoid valve has a relatively high requirement to the purity of the flowing medium. However, the direct acting type has no such strict requirement.