DESCRIPTION
NAFFCO pressure reducing oblique landing valves are suitable for installation on wet risers in buildings for fire fighting purposes, permanently charged with water from a pressurised supply.
These landing valves are pressure reducing type designed to provide a range of outlet pressure (4 bar -12 bar). The Landing valves are classified under high pressure and are suitable for use at nominal inlet pressure up to 20 bar.
SPECIFICATION
| Model No. | NWR 120 |
|---|---|
| Valve Type | Oblique, Pressure Reducing, Flanged Inlet |
| Pressure Rating | High Pressure Valve |
| Nominal Size | DN50 |
| Working Pressure | 20 Bar Maximum |
| Test Pressure | Valve Seat Test at 22 Bar • Body Test at 30 Bar |
| Flange Drilling | BS4504 Part: 2 :1974Table : 16/2 |
| Min. Water Flow Rate | 8.5 L/S @ 4 Bar Outlet Pressure |
| Min. Valve Pressure Regulating | 4-12 Bar |
FEATURES
- BSI Kitemark approved
- Body material made of copper alloy to EN 1982
- Hand wheel material made of grey cast iron to BS EN 1561
- Blank cap material made of copper alloy to EN 1982
- Possible to replace the gland seal when under pressure with the valve fully closed
- Disc facing rubber are of replaceable type
- Valves are provided with a strap and pad lock so that the hand wheel can be secured to counter unauthorized use
- The hand wheel are BLACK painted and body to RED