Supporting the nation's essential services - Read our COVID-19 statement
The NABIC 568SS stainless steel Anti Vacuum Valve is set to open at a vacuum pressure of 50mbar.
A dust cap prevents entry of foreign matter.
Medium: Hot water, steam, air
Size Range: DN15 - DN50
Pressure: 13.5 bar
Material: Stainless Steel
Temperature: -20 to 195°C
Connection: Male
Pipe Connections
BSPT ( R) BS EN 10226-2 male connections, R1/2, R3/4", R1", R1 1/4", R1 1/2" and R2" available.
Testing
All valves are 100% production tested.
Product Extras
Materials
| ITEM NO. | PART NAME | MATERIALS |
|---|---|---|
| 1 | Body | 316 Stainless Steel |
| 2 | Seat Seal Holder | 316 Stainless Steel |
| 3 | Spindle | 316 Stainless Steel |
| 4 | Cap | 316 Stainless Steel |
| 5 | Spring | Stainless Steel BS2056 302S26 |
| 6 | Seat Seal | PTFE |
| 7 | Seat Seal Retaining plate | 316 Stainless Steel |
| 8 | O-Ring | Viton E60C |
Dimensional Drawing
Dimensions & Weights
| SIZE DN | A (mm) | B (mm) | C BSPT (mm) | D-HEX | WEIGHT (kg) |
|---|---|---|---|---|---|
| 15 | 58 | 35 | 1/2' | 24 | 0.10 |
| 20 | 61 | 36 | 3/4' | 30 | 0.16 |
| 25 | 66 | 39 | 1' | 36 | 0.26 |
| 32 | 76 | 43 | 1 1/4' | 46 | 0.52 |
| 40 | 90 | 51 | 1 1/2' | 52 | 0.77 |
| 50 | 94 | 58 | 2' | 65 | 1.22 |
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