Pneumatic Check Valve Airtac NRV-25: Non-Return Valve - NRV25G

Non-return valve, 1" G thread type

The Airtac NRV valve series is a functional replacement for the SMC AK series.

1. There are many port sizes: 1/8", 1/4", 3/8", 1/2", 3/4" and 1"
2. It allows the fluid to flow in one direction only
3. It is to prevent backflow due to sudden drop in pressure or decrease in air consumption
4. There is a large valid area of section
5. The spool is made of POM, valve's core sealed with rubber and it has a compact structure

The Airtac NRV Series Check Valves
The Airtac NRV Series Check Valves, also known as pneumatic one-way or non-return valves, are specially designed to allow air to flow in one direction while preventing backflow in pneumatic systems. With a compact and durable structure, the NRV series ensures reliable flow control and stable performance in various automation and industrial applications.

Built with high-quality materials and precision machining, Airtac NRV check valves provide excellent sealing, high airflow efficiency, and long service life. They are available in inline type and elbow type designs to accommodate different piping installations.

Key Features
• One-Way Air Flow Control – Allows airflow in one direction and prevents reverse flow to protect pneumatic components.
• Compact Structure – Space-saving body design suitable for limited installation areas.
• Reliable Sealing Performance – High-quality sealing materials ensure leak-free operation.
• Durable Construction – Nickel-plated brass and engineering plastic provide excellent corrosion resistance.
• Flexible Installation – Multiple thread sizes and connector types available (BSPP, NPT, Metric).
• Maintenance-Free Design – Simple internal structure for smooth operation and long-term reliability.

Applications
- Pneumatic systems requiring flow control and backflow prevention
- Industrial automation and assembly line equipment
- Air compressor pipelines and pneumatic circuits
- Cylinder and actuator protection in pneumatic machinery
- Packaging, printing, and textile equipment with directional air control requirements

Specifications
• Series: Airtac NRV Series
• Type: Inline and Elbow Type Check Valve
• Operating Pressure: 0–1.0 MPa
• Operating Temperature: 0–60 °C
• Body Material: Nickel-plated brass / engineering plastic
• Thread Options: G, NPT, or Metric thread sizes

Advantages
- Prevents air backflow effectively in pneumatic systems
- High pressure resistance and stable airflow performance
- Compact and lightweight design for convenient installation
- Maintenance-free and highly durable construction
- Compatible with a wide range of Airtac pneumatic components