Overview
The SMC VQ2101N-51 is a 5-port, 2-position pilot solenoid valve from the VQ2000 series. Rated for 24V DC operation, with maximum operating pressure of 0.7 MPa, and designed for air and inert gas applications. VQ valves are ideal for applications requiring high speed, frequent operation, stable response time and long service life. This model features a base-mount, plug-in construction with rubber seals and a tool-required manual override for emergency operation.
Key Features
- Space-saving, reduced volume design with screwless, one-clamp structure for easy valve replacement
- Built-in one-touch fittings save piping time and labor
- Innovative mounting methods allow valves to be changed without entirely disassembling the manifold
- Rubber seal construction with negative-common function (DC)
- Integrated light and surge suppressor for coil protection
- Dust-protected enclosure rated for industrial environments
Technical Specifications
The SMC VQ2101N-51 operates within tight parameters for consistent performance across industrial pneumatic systems. Ambient temperature range -10 to 50°C, with a 2-position double configuration and 5-port pilot type design. Response time is ≤31 ms with a flow coefficient (Cv) of 0.55 (P to A/B) and 0.8 (A/B to R1/R2). The valve accepts solenoid electrical entry via D-Sub connector and includes a manual push-button override.
Typical Applications
The SMC VQ2101N-51 is widely deployed in:
- Pneumatic automation and process control systems
- High-speed, frequent-cycling valve switching applications
- Panel-mount and manifold-integrated installations
- Air tool control and actuator direction switching
- Industrial equipment with space constraints requiring compact design
- Applications requiring stable response timing and long service intervals
Compatibility & Replacements
Compatible With
- SMC VQ2000 series manifold and sub-plate systems
- Standard 5/32″ pneumatic port connections
- 24VDC pneumatic control circuits
- Piloted solenoid valve base plates and cavity configurations
- ISO 1219-1 pneumatic circuit designs
Replaces / Drop-In Replacement For
The SMC VQ2101N-51 is a direct replacement for other part numbers within the VQ2101N family when matching voltage and seal specifications. Related models include VQ2101N-51-Q (CE-compliant variant) and VQ2101N-51-02N. Always verify part number suffix to confirm exact configuration match before ordering replacement units. Consult SMC documentation for cross-reference to competitor models.
Works With
- SMC manifold assemblies and sub-base systems
- Pneumatic circuit design software (ISO 1219-1 compatible)
- 24VDC PLC/industrial control systems
- Standard industrial air supply networks (0.1–0.7 MPa)
