Details
AirTAC NRV Series: One-Way Non-return (Check) Valve
The AirTAC NRV Series is a fundamental pneumatic component designed to allow air to flow in one direction while strictly preventing backflow in the opposite direction. Known for its simplicity and high reliability, the NRV series is essential for protecting sensitive equipment from pressure surges and maintaining pressure within specific circuit branches.
Unlike the PCV series, the NRV is a passive valve—it requires no external pilot signal and operates solely based on the pressure differential of the airflow.
Key Product Features
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Unidirectional Flow Control: Effectively prevents the reverse flow of compressed air, protecting upstream components like compressors and regulators.
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Low Cracking Pressure: Engineered with a sensitive internal spring that allows the valve to open at minimal pressure, ensuring high efficiency and low energy loss.
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Large Flow Capacity: The internal structure is streamlined to reduce turbulence and pressure drop, allowing for maximum flow rates in a compact body.
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Robust Construction: Typically manufactured with a high-strength aluminum alloy body and durable internal components to withstand high-frequency switching.
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Versatile Mounting: Available in multiple port sizes with standard thread types (PT, NPT, and G), making it easy to integrate into existing pneumatic lines.
Specifications
| Model | NRV06 | NRV08 | NRV10 | NRV15 | NRV20 | NRV25 |
| Fluid | Air (to be filtered by 40μm filter element) | |||||
| Port size [Note 1] | 1/8" | 1/4" | 3/8" | 1/2" | 3/4" | 1" |
| Orifice size mm² (Cv valve) | 18 (1.0) | 27 (1.5) | 60 (3.33) | 73 (4.06) | 230 (12.78) | 260 (14.44) |
| Pressure range | 0.02~1.0MPa (2.9~145psi) | |||||
| Proof pressure | 1.5MPa (215psi) | |||||
| Temperature | -20~70˚C | |||||
| Material of body | Aluminium body | |||||
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