The NRI performs two functions; an isolation valve and a non-return valve. When isolation is required the NRI’s spindle is screwed down, bringing the washer into contact with the valve seat to shut off the flow. The non-return function occurs when back flow pressure forces the washer against the valve seat, creating a seal and thus preventing back flow.

Non Return & Isolating Valve

Part No: NRI15M

15mm (1/2" BSP) Male Compression / 15mm (1/2" BSP) Male Compression

Length: 73mm / Height: 52mm

Non Return & Isolating Valve

Part No: NRI15F

15mm (1/2" BSP) Female Thread / 15mm (1/2" BSP) Female Thread

Length: 73mm / Height: 52mm

Non Return & Isolating Valve

Part No: NRI15FL

15mm (1/2" BSP) Female Flared Thread / 15mm (1/2" BSP) Female Flared Thread

Length: 73mm / Height: 52mm

Non Return & Isolating Valve

Part No: NRI20F

20mm (1/2" BSP) Female Thread / 20mm (1/2" BSP) Female Thread

Length: 80mm / Height: 52mm

Non Return & Isolating Valve

Part No: NRI20FL

20mm (3/4" BSP) Female Flared Thread / 20mm (3/4" BSP) Female Flared Thread

Length: 80mm / Height: 52mm