2 1/2" Fig 542L Safety Valve
2 1/2" Fig 542L Nabic Safety Valve - DN65
2 1/2" BSPP Female Inlet x 2 1/2" BSPP Female Outlet
The NABIC Fig 542L has been 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.
Designed for use with Hot water, steam, compressed air, inflammable liquids and inert gasses, CO2 (to 20°C), ethylene glycol and potable water
- High discharge capacity.
- Pressure tight on discharge side
- Suitable for liquids and inert gases
- WRAS Approved
Pressure & Temperature Ratings
Set Pressure | Temperature |
---|---|
0.3 - 10.5 bar | -20°C - 195°C |
Dimensions & Weights
SIZE DN | Rp BSP inlet & Outlet | A (mm) |
B (mm) |
C (mm) |
Weight (Kg) |
---|---|---|---|---|---|
65 | 2 1/2" | 76 | 55 | 285 | 8.24 |
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 |
Datasheets | |
---|---|
fig542inst.pdf |
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