The NABIC 500F is ideal 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.
Medium: Hot water, steam, compressed air and inert gasses, Co2 (to 20°C), ethylene glycol, potable water
Size Range: DN20 - DN65
Pressure: 0.4 - 12.5 bar
Temperature: -20 to 195°C
Connection: Flanged inlet & screwed outlet
Flanged inlet connections size DN20 upwards. Threaded outlet connections, Rp 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|
|14||Lead Seal (Not shown)||Lead|
|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)|
Dimensions & Weights
Due to difficult market conditions our delivery time is currently four working days from placing your order, although we will endeavour to deliver prior if possible.
You must select a value for all options provided.
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