1/4", 3/2-Way, Bistable Solenoid Valve + Connector + Coil | Aignep

The AIGNEP 3/2 Way 1/4" BSPP Bi-stable Solenoid Valve — Kit with Dual Coil 24 VDC and Connector is a pneumatic directional valve with dual electrical pilotage that maintains its last switched position without the need for a continuous signal, acting as a pneumatic memory. Unlike the 5/2-way version (for double-acting cylinders), this 3/2-way configuration is ideal for controlling single-acting cylinders and actuators that require two stable states without spring return. It includes a dual 24 VDC coil and connector. Anodized aluminum body, NBR seals. Operates up to 10 bar. Manufactured in Italy by AIGNEP.

3/2 Way vs. 5/2 Way Bi-stable — When to use each?

• 3/2 Way bi-stable (this valve): Control of single-acting cylinders or actuators with two stable states. Ideal for applications where flow needs to be blocked or released in two fixed positions
• 5/2 Way bi-stable: Control of double-acting cylinders (extend and retract). Allows directing flow in two directions with position memory

Bi-stable Operation Principle

• Pneumatic memory: Maintains position without continuous signal — only requires an impulse to change state
• Dual coil: One coil for each switching direction (end A and end B)
• Spool type: Precise and repeatable switching with low internal friction
• Low power consumption: Does not require continuous energy to maintain position
• Functional safety: Maintains position in case of signal or power loss

Applications

• Control of single-acting pneumatic cylinders with two stable states
• Pneumatic locking and release systems that must maintain state during power failure
• Automated machinery and production lines with functional safety requirements
• Manifolds and industrial pneumatic circuits controlled by 24 VDC PLCs
• Processes where the actuator must remain in position when the signal is interrupted

Technical Specifications

• Type: Bi-stable solenoid valve with dual electrical pilotage
• Configuration: 3/2 way, 2-position bi-stable
• Pneumatic connection: 1/4" BSPP
• Power supply: 24 VDC — 3 W (dual coil)
• Working pressure: Up to 10 bar
• Body: High-resistance anodized aluminum
• Seals: NBR
• Kit contents: Bi-stable solenoid valve + Dual coil + Connector
• Country of manufacture: Italy
• Brand: Aignep

Equivalent to

• SMC VT307-3G1-02 (3/2 bi-stable, dual coil, G1/4")
• Camozzi 358 Series, 3/2 bi-stable, 1/4"
• Bürkert Type 6213, 3/2 bi-stable G1/4"
• ASCO Numatics 327/328 Series, 3/2 bi-stable G1/4"
• Parker/Pneutronics B Series, 3/2 bi-stable G1/4"
• Univer BE/AC Series, 3/2 bi-stable G1/4"

Other Common Names

This product is also known as: 3/2 way bi-stable pneumatic solenoid valve, 3/2 way dual pilot valve, 3/2 pneumatic memory valve, 3/2 24VDC dual coil solenoid valve, bistable solenoid valve 3/2 pneumatic, double solenoid valve 3/2 way 1/4", memory valve 3/2 pneumatic or AIGNEP bistable 3/2 solenoid valve 24VDC.