What is the standard test pressure for the hydrant body?

2.1 MN/m² (21 kgf/cm²) maintained for 2.5 minutes to check for leaks or sweating.

What type of connection is required at the outlet?

A 63 mm female instantaneous connection conforming to standard fire hose dimensions.

What material is typically used for the main body of the stand post?

Cast iron conforming to Grade FG 200 of IS 210.

IS 908

: 1975

Specification for Fire Hydrant, Stand Post Type

CurrentFrequently UsedSpecificationBIMFire Safety · Fire Fighting

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This standard covers the requirements for materials, dimensions, construction, and testing of stand post type fire hydrants used for outdoor fire fighting. It is utilized by MEP and fire safety engineers to ensure reliable water access points for fire brigade hoses in exterior water networks.

Specification for Fire Hydrant, Stand Post Type

Quick Reference Values

Standard Outlet Size63 mm instantaneous pattern

Hydrostatic Test Pressure (Body)2.1 MN/m² (21 kgf/cm²) for 2.5 minutes

Hydrostatic Test Pressure (Seat)1.4 MN/m² (14 kgf/cm²) for 2.5 minutes

Body Material StandardCast Iron Grade FG 200 of IS 210

Waterway minimum diameter80 mm or 100 mm based on type

Practical Notes

Always ensure the outlet connection matches the 63 mm instantaneous pattern used by local fire authorities for seamless hose connection.

Proper underground thrust blocks must be designed at the base of the hydrant to absorb pressure surges and prevent pipe dislocation.

The hydrant must be painted in standard Fire Red color for high visibility in emergencies.