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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  • 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.
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


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

Kitemark Approval Certificate Download
Technical Datasheet Download
Technical Drawing Download

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