Underground Hydrant (Kitemark / LPCB Approved)
NAFFCO under ground fire hydrants are valves of screw down type and are suitable for a maximum working pressure of 16 bar.
The underground fire hydrants are manufactured to comply to BS 750:2012 and EN 14339:2005 standards with screwed outlet threaded to BS 336:2010 standard.
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Features
- BSI Kitemark certified.
- Body material made of grey cast iron to BS EN1561.
- Material of spindle and threaded part of valves which engages with it is made of stainless steel to BS 10088-1.
- Material for the screwed outlet is made of high tensile brass to BS 12163:2011.
- Spindle sealing (two seals) is of the toroidal sealing ring ('0' ring) type and are capable of changing while the valve is under pressure and fully closed.
- A wiper ring is positioned above the spindle sealing’s to prevent the ingress of foreign matter.
- Each hydrant shot is blasted (inside and outside) to SA 2 ½ std.
- All cast iron parts are thoroughly cleaned and painted.
Specifications
| Model Number | NHYD058 | |
| Valve Type | Screw down (type 2C) | |
| Nominal Size & Flange Drilling | Flange-X Flange-Y Flange-Z | PN16, DN80, BS EN 1092-2 PN16, DN50, BS EN 1092-2 PN16, DN50, BS EN 1092-3 |
| Working Pressure | 16 bar maximum | |
| Test Pressure | Body | 25 bar |
| Test Pressure | Seat | 20 bar |
BILL OF MATERIAL
| Sl.No. | Description | Material |
| 1 | Body | Grey Cast Iron(C.I) to BS EN 1561 |
| 2 | Body Seating Seal | Rubber to BS 1154 |
| 3 | Spindle | Stainless steel to BS EN 10088-1 |
| 4 | Bonnet | Grey Cast Iron(C.I) to BS EN 1561 |
| 5 | Spindle Cap | Grey Cast Iron to BS EN 1561 |
| 6 | Spindle (Stem) Seal | Rubber to BS 1154 |
| 7 | Gland | Grey Cast Iron to BS EN 1561 |
| 8 | Gland Wiper Ring | Teflon |
| 9 | Outlet | High Tensile Brass to BS 12163: 2011 |
| 10 | Outlet Cap | Grey Cast Iron to BS EN 1561 |
| 11 | Outlet Gasket | Rubber to BS 1154 |
| 12 | Drain Bolt | Forged Steel |
