Under Ground Hydrant
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.
• 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.
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 |
