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The NABIC Fig 500 is 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 (1 bar and above).
Medium: Hot water, steam, compressed air and inert gasses, Co2 (to 20°C), ethylene glycol, potable water
Size Range: DN15 - DN65
Pressure: 0.4 - 12.5 bar
Material: Gunmetal
Temperature: -20 to 195°C
Connection: Screwed inlet & outlet
Pipe Connections
Screwed female inlet and outlet connections. outlet connection is one size larger than inlet connection. Threaded connections are Rp parallel to BS EN 10226-1. NPT connections are available upon request.
Testing
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
Materials
| 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 (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) |
| 19 | O-Ring | Viton |
Dimensional Drawing
Dimensions & Weights
|
SIZE DN |
Rp BSP Inlet |
Rp BSP Outlet |
A (mm) |
B (mm) |
C (mm) |
Weight (Kg) |
|---|---|---|---|---|---|---|
| 15 | 1/2" | 3/4" | 33 | 20 | 120 | 0.53 |
| 20 | 3/4" | 1" | 39 | 24 | 132 | 0.76 |
| 25 | 1" | 1 1/4" | 45 | 30 | 155 | 1.35 |
| 32 | 1 1/4" | 1 1/2" | 54 | 36 | 201 | 2.35 |
| 40 | 1 1/2" | 2" | 64 | 41 | 241 | 4.20 |
| 50 | 2" | 2 1/2" | 76 | 47 | 267 | 6.80 |
| 65 | 2 1/2" | 3" | 90 | 60 | 330 | 12.50 |