The NABIC Fig 520 flanged valve has been designed primarily for use on unvented hot water Heating systems, where a high capacity, emergency steam relief capability is required.
All wetted parts are manufactured from dezincification resistance materials. Designed and tested to BS EN ISO 4126 -1. Approved for use on applications requiring WRAS.
Medium: Hot water, steam, compressed air and inert gasses, Co2 (to 20°C), ethylene glycol, potable water
Size Range: DN65 - DN100
Pressure: 0.4 - 12.5 bar
Temperature: -20 to 195°C
Connection: Flanged inlet & screwed outlet
Flanged inlet connections. Threaded female outlet connections, Rp (BSP) parallel to BS EN 10226-1. Most flange standards can be accommodated.
All valves are shell and seat tested (to confirm set pressure) before leaving the factory and all valves are supplied pre-set with a tamper proof seal. Pressure Test Certificate and Letters of Conformity available on request.
|Ref No||Name of Part||Material|
|1||Thrust Washer||Brass, BS EN 12164 CW609N|
|3||Test Lever||Brass, BS EN 1982 CC754S|
|4||Spring||Chrome Vandium Alloy Steel, BS 2803 735 A50 HS (Stainless Steel, BS 2056 302S26 Opt)|
|6||Spring Cover||Bronze, BS EN 1982 CC491K|
|7||Piston||Brass, BS EN 12164 CW609N|
|9||Seat Seal Holder||Bronze, BS EN 1982 CC491K / Brass BS EN 12164 CW602N (DZR)|
|10||Seat Seal||PTFE (Viton Opt)|
|11||Starlock Washer||Stainless Steel|
|12||Body||Bronze, BS EN 1982 CC491K|
|15||Adjusting Screw||Brass, BS EN 12164 CW609N|
|16||Spring Plate||Brass, BS EN 12164 CW609N|
|17||Spindle||Brass, BS EN 12164 CW721R|
|18||Seat Seal Retaining Plate||Bronze, BS EN 1982 CC491K / Brass BS EN 12164 CW602N (DZR)|
|20||Seat||Bronze, BS EN 1982 CC491K|
|22||Drain Plug||Brass, BS EN 12164 CW609N|
Dimensions & Weights
To order these products please call us on +44 (0)1462 443 278.
Free delivery on orders over £400.
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