5 Year Warranty
FIG-500T_SafetyValve_DN15_Nabic_RedBG_v1-copy.jpg FIG-500T_SafetyValve_DN15_Nabic_RedBG_v2-copy.jpg FIG-500T_SafetyValve_DN15_Nabic_RedBG_v3-copy.jpg FIG-500T_SafetyValve_DN15_Nabic_RedBG_v4-copy.jpg

Fig 500T Combined Pressure & Temperature Relief Valve

5 Year Warranty
Buy Online Price from £259.18 (ex vat)

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). 

  • Resilient Viton soft seat design
  • Powerful thermostat

Please review the Fig 500T Sizing Guide before purchasing

Pressure Equipment Directive - PED 2014/68/EU
Product Features +

Medium: Hot water only

Size Range: DN15 - DN50

Pressure: 0.4 - 12.5 bar

Material: Gunmetal

Temperature: 95°C

Connection: Screwed male inlet & female outlet

Pipe Connections

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.

Product Extras

  • Pressure setting locked and sealed

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
2 Grubscrew Steel
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)
5 Label Yellow kapton
6 Spring Cover Bronze, BS EN 1982 CC491K
7 Piston Brass, BS EN 12164 CW609N
8 Diaphragm Silicon Rubber
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
13 Lever Pin Steel
14 Lead Seal 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)
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)


Dimensional Drawing

Fig 500T Dimensional Drawing

Dimensions & Weights

SIZE DN R BSPT Inlet Rp BSP Outlet A(mm) B(mm) C(mm) D(mm) Weight (Kg)
15 3/4" 3/4" 33 81 48 229 0.72
20 1" 1" 39 81 47 238 1.00
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
40 2" 2" 64 127 71 398 4.50
50 2 1/2" 2 1/2" 76 127 82 429 7.78


Downloads +

BIM Library

Discharge Capabilities +
Buy Online +

Fig 500T Combined Pressure & Temperature Relief Valve

NOTE: Due to difficult market conditions our delivery time is currently four working days from placing your order, although we will endeavour to deliver earlier.

  • Customers can order up to 12 of any one product line. For larger orders please call us on 01462 443 278
  • Order over £400 for Free Delivery
  • Due to the COVID-19 pandemic orders may take a little longer to deliver than usual.
  • Online ordering is only available in the UK and Northern Ireland

View Delivery, Returns & Refunds Details


Important: Please review the Fig 500T Sizing Guide before purchasing

Part Number Size Ex Vat Stock Status More
DN15 £ 259.18 In stock +
3/4" BSPT Male Inlet x 3/4" BSPP Female Outlet to BS21 - Viton to Metal Seat - 81mm Probe Length
DN20 £ 325.62 In stock +
1" BSPT Male Inlet x 1" BSPP Female Outlet to BS21 - Viton to Metal Seat - 81mm Probe Length
DN25 £ 428.05 In stock +
1.1/4" BSPT Male Inlet x 1.1/4" BSPP Female Outlet to BS21 - Viton to Metal Seat - 81mm Probe Length
DN32 £ 764.54 In stock +
1.1/2" BSPT Male Inlet x 1.1/2" BSPP Female Outlet to BS21 - Viton to Metal Seat - 127mm Probe Length
DN40 £ 955.18 In stock +
2" BSPT Male Inlet x 2" BSPP Female Outlet to BS21 - Viton to Metal Seat - 127mm Probe Length
DN50 £ 1,255.43 In stock +
2.1/2" BSPT Male Inlet x 2.1/2" BSPP Female Outlet to BS21- Viton to Metal Seat - 127 Probe Length

Set Required Pressure

Please type your required set pressure from 0.4 to 12.5. Pressure settings can be in 0.1 increments.
Please check set pressure charts on Discharge Capabilities section.

Test Certificates are included free of charge for this product, and available to download once you have received your serial number.

Price £259.18

You must select a value for all options provided.


What our customers say

The reason I went to NABIC was because we have to meet certain water regulations. After a chat with Northumbrian Water, they suggested looking into NABIC products as they are WRAS approved and suitable to use on all potable water applications.

I went direct and bought 4 pipe interrupters with next day delivery, which have been installed in our on-site laboratory. My user experience was great and I liked the fact that site has all the necessary specifications and prices easily to hand.

Peter Bauckham - Managing Director, Argos Inspection

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