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The NABIC 500L is designed primarily for use where high tightness is required on the discharge side, having a sealed spring cover to prevent the possibility of back pressure leakage through the top of the valve.
The lift is progressively proportional to flow. All wetted parts are manufactured from dezincification resistance materials. Designed and tested to BS EN ISO 4126 -1.
Medium: Hot water, steam, compressed air, inflammable liquids 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 | Leak Proof Dome | Bronze, BS EN 1982 CC491K |
| 2 | Locknut | Brass, BS EN 12164 CW609N |
| 3 | Dome 'O' Ring | Viton |
| 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 | Cover Seal | Viton |
| 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 | Adjusting Screw | Brass, BS EN 12164 CW609N |
| 14 | Spring Plate | Brass, BS EN 12164 CW609N |
| 15 | Spindle | Brass, BS EN 12164 CW721R |
| 16 | Seat Seal Retaining Plate | Bronze, BS EN 1982 CC491K / Brass BS EN 12164 CW602N (DZR) |
| 17 | O-Ring | Viton |
Dimensional Drawings
m,
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 | 123 | 0.70 |
| 20 | 3/4" | 1" | 39 | 24 | 136 | 0.93 |
| 25 | 1" | 1 1/4" | 45 | 30 | 155 | 1.42 |
| 32 | 1 1/4" | 1 1/2" | 54 | 36 | 201 | 2.50 |
| 40 | 1 1/2" | 2" | 64 | 41 | 236 | 4.63 |
| 50 | 2" | 2 1/2" | 76 | 47 | 267 | 7.00 |
| 65 | 2 1/2" | 3" | 90 | 60 | 330 | 12.50 |
Price £162.77
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After an insurance recommendation I decided to replace one of our Safety Relief Valves. Working within the pharmaceutical industry, the valve was required for hot water calorifier.
The service on the site was great and I liked the fact that the certifications arrive with the products. We at Bayer have limited access to wholesalers, buying direct from NABIC using a bank card proved to be a much easier transaction.
Chris Green, Bayer