Introduction
Solenoid valves are the beating heart of pneumatic systems. Their function is to control the flow and direction of compressed air in the circuit. Correct selection of a solenoid valve directly affects system performance, speed, and safety.

Types of Solenoid Valves

• 2/2 and 3/2 valves for simple flow control

• 5/2 and 5/3 valves for double-acting cylinder control

• Normally Open (NO) and Normally Closed (NC) valves according to circuit needs

• Manual, mechanical, or electric valves depending on control type

Important Points in Selection

1. System operating pressure (usually 6 to 10 bar in pneumatics)

2. Air flow rate (Flow Rate)

3. Type of control and supply voltage (DC or AC)

4. Body material and corrosion resistance

5. Compliance with ISO and CE standards

Reputable Solenoid Valve Brands

• Festo – Germany

• SMC – Japan

• ASCO (Emerson) – USA

• Camozzi – Italy

• Norgren – UK

Conclusion
Selecting the appropriate solenoid valve increases equipment lifespan, improves system response speed, and reduces energy consumption. Petro Tajhiz Atrin, by providing technical consultation and supplying reputable brands, is a reliable partner for industries in selecting precise and standard equipment.