Supporting the nation's essential services - Read our COVID-19 statement
The NABIC Fig 500T provides protection against excess temperature as well as pressure protection. It automatically discharges hot water to prevent a predetermined set pressure and / or temperature being exceeded.
Each of the lift mechanisms is independent of each other. Designed and tested to BS EN 4126, BS 6283 (when 50% of BS EN ISO 4126 -1 ratings at 1 bar or temperature ratings are used).
Medium: Hot water only
Size Range: DN15 - DN50
Pressure: 0.4 - 12.5 bar
Connection: Screwed male inlet & female outlet
Threaded male inlet connection R (BSPT) to BS EN 10226-2. Threaded female outlet connections Rp (BSP) to BS EN 10226-1. Note: The inlet and outlet connections are equal in size and are one size larger than the bore size. The inlet is a male thread, the larger size is to allow the thermover to be fitted.
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.
Pressure Ratings & Temperature Range
|Min - Max Set Pressure (bar)||Set Temperature (° C)|
|DN15 to DN25 1.0 to 12.5||95|
|DN32 to DN50 0.4 to 12.5||95|
|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||Push Rod||Stainless Steel, BS 970 316 S31|
|21||Adaptor||Brass, BS EN 12164 CW602N (DZR)|
|22||Thermostat||Copper/Brass BS EN 12164 CW602N (DZR)|
Dimensions & Weights
|SIZE DN||R BSPT Inlet||Rp BSP Outlet||A(mm)||B(mm)||C(mm)||D(mm)||Weight (Kg)|
|25||1 1/4"||1 1/4"||45||88||56||269||1.54|
|32||1 1/2"||1 1/2"||54||127||62||354||3.00|
|50||2 1/2"||2 1/2"||76||127||82||429||7.78|
Important: Please review the Fig 500T Sizing Guide before purchasing
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