This standard specifies the materials, dimensions, manufacture, and testing requirements for underground fire hydrants of the sluice valve type. It is utilized by fire protection and public health engineers to specify reliable underground hydrant connections for municipal and facility water distribution systems.
Specification for Underground Fire Hydrant, Sluice Valve Type
Quick Reference Values
Nominal inlet size80 mm
Hydrostatic test pressure for body2.0 MPa (20 kgf/cm²)
Hydrostatic test pressure for seat1.4 MPa (14 kgf/cm²)
Duration of hydrostatic test5 minutes
Practical Notes
The duck foot bend must be adequately supported by a concrete thrust block to counteract water pressure surges and operational forces.
Ensure the surface box over the hydrant is installed flush with the finished ground or pavement level to prevent tripping hazards while retaining quick accessibility during emergencies.