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The NABIC Fig 256A pipe interrupter is classified as a type DC device suitable for protecting up to fluid category 5.
Incorporating ventilation ports that are totally unrestricted and permanent, water is guided past these air vents using a venturi type nozzle. Since they are open to atmosphere this stops siphonage and allows the escape of water in the event of backflow.
Medium: Water
Size Range: DN10 - DN20
Pressure: 0 - 10 bar
Material: Chrome Plated Brass
Temperature: -20 to 60°C
Connection: Male inlet and outlet
Pipe Connections
Male BSP inlet and outlet connections: G3/8", G1/2" and G3/4" to ISO228A.
Testing
All valves are 100% production tested.
Materials
| ITEM NO. | PART NAME | MATERIALS |
|---|---|---|
| 1 | Body Material | Brass |
| 2 | Internals | Plastic |
| 3 | 'O' Ring Seals | EPDM |
Dimensional Drawings
Dimensions & Weights
|
SIZE DN |
BSP G |
L | D | Kv |
|---|---|---|---|---|
| 10 | 3/8" | 83.5 | 30 | 0.33 |
| 15 | 1/2" | 91 | 43.5 | 0.9 |
| 20 | 3/4" | 88 | 43.5 | 1.14 |
Price £41.45
We had an existing NABIC Fig. 500 safety valve installed in our steam boiler factory which needed replacing. The valve had started to leak due to its old age.
I had no hesitation in purchasing another as it’s been a great product. I was very happy with the service of the website, as well as the prices. The fact the valves come with the necessary certifications is also great.
Wayne Barnes- Engineering Co-ordinator, Newlywed Foods