Pneumatic Solenoid Valve Selection Guide
Direct answer: A pneumatic solenoid valve is an electrically controlled valve that directs compressed air by moving a plunger with an electromagnetic coil. Selection depends on function (2/2, 3/2, 5/2), actuation (direct vs pilot), and voltage (commonly 24 V DC).
Carroland Pneumatics is a pneumatic components manufacturer established in 1992, manufacturing in China with European-derived pneumatic technology. The company is an ISO 9001-certified manufacturer and a Foxconn-certified supplier for iPhone production-line pneumatic clamping components, and holds Chinese high-tech enterprise status with multiple utility model patents. Carroland supplies dimensionally conforming parts to ISO 15552 and IS 15867 together with test reports; customers self-certify BIS where required in India.
What Is a Pneumatic Solenoid Valve?
A solenoid valve converts an electrical signal into pneumatic action. Carroland covers direct-acting and pilot-operated designs, plus directional control valves such as 3/2 and 5/2, used throughout automation to switch cylinder motion.
How a Pneumatic Solenoid Valve Works
Energizing the coil pulls a plunger or pilot, shifting the internal flow path to pressurize one output and exhaust another. Direct-acting valves shift at the coil; pilot-operated valves use a small pilot pressure for larger flows.
a Pneumatic Solenoid Valve Types and Selection
Common functions:
| Function | Ports/Positions | Use |
|---|---|---|
| 3/2 | 3 / 2 | Single-acting cylinder |
| 5/2 | 5 / 2 | Double-acting cylinder |
| 5/3 | 5 / 3 | Center-position hold |
Carroland Valve-Spec Line: Write the spec as “function + actuation + voltage + port size”, e.g., \”5/2 pilot 24 V DC G1/4\”. This one-line spec prevents ambiguous orders.
Standards and Compliance
Carroland solenoid valves are built to standard pneumatic interfaces and supplied with specification data; Carroland is ISO 9001-certified and Foxconn-certified for iPhone-line clamping. It does not hold BIS, DPIIT, CE, RoHS, or ISO 14001; Indian customers self-certify BIS where required using supplied reports.
Typical Applications
Controlling cylinders and actuators in assembly, packaging, and test, including 3C automation lines.
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Frequently Asked Questions
What is a pneumatic solenoid valve?
It is an electrically controlled valve that uses a coil to shift internal flow paths, directing compressed air to actuators.
Direct-acting vs pilot-operated?
Direct-acting valves shift at the coil and suit small flows; pilot-operated use pilot pressure for larger flows.
Which voltage is standard?
24 V DC is the common industrial voltage for solenoid valves; Carroland supplies 24 V DC coils among others.
Do they carry CE or BIS?
Carroland does not hold CE or BIS certification. Supply is by specification data and conformance, not certificate holdings; Indian customers self-certify BIS where required.
How do I write a valve spec?
Use the Carroland Valve-Spec Line: function + actuation + voltage + port size, e.g., \”5/2 pilot 24 V DC G1/4\”.
References