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IS 5612:2000 (Part 1) is the Indian Standard (BIS) for hose-clamps and hose bandages for fire brigade use, part 1: hose-clamps. This standard specifies the requirements for materials, shape, dimensions, construction, and performance of hose-clamps. These clamps are intended for fire brigade use to temporarily stop leakages in 63 mm and 70 mm fire hoses.
Specification for hose-clamps and hose bandages for fire brigade use, Part 1: Hose-clamps
DIN 14365:2018-09DIN - Deutsches Institut für Normung, Germany
HighCurrent
Firefighting equipment - Hose clamps
Directly specifies requirements, dimensions, and testing for hose clamps used by fire brigades to stop leaks.
NFPA 1963:2019National Fire Protection Association, USA
LowCurrent
Standard for Fire Hose Connections
Covers hose couplings and sizes, providing context for the clamp's application, but does not specify the clamp tool itself.
Key Differences
≠The hydraulic proof pressure test in IS 5612 is significantly higher (21 kgf/cm² or ~21 bar) than the typical working pressure tightness test in DIN 14365 (16 bar).
≠IS 5612 specifies clamps for two distinct hose sizes (63 mm and 70 mm), whereas DIN 14365 categorizes clamps by hose type (e.g., Type B for 75 mm hose, Type C for 42/52 mm hose), providing a more structured approach to sizing.
≠DIN 14365 places a stronger emphasis on ergonomic and safety features, such as specific requirements for handle design to be operable with firefighting gloves and prevention of sharp edges, which are less explicitly detailed in IS 5612.
≠IS 5612 allows for the use of heavier materials like Leaded-tin bronze (Gunmetal) for the clamp body, while modern European standards like DIN 14365 primarily focus on lightweight aluminum alloys to reduce equipment weight.
Key Similarities
≈Both standards address the same core function: providing a device to temporarily and quickly stop leaks in a pressurized fire hose during emergency operations.
≈The basic design concept is consistent across both standards, featuring a two-part, hinged body that envelops the hose and is secured by a locking lever.
≈Both IS 5612 and DIN 14365 mandate a hydraulic performance test where the clamp is applied over a simulated leak on a hose and pressurized to ensure it seals effectively under pressure.
≈Both standards specify the use of corrosion-resistant materials suitable for harsh firefighting environments, with aluminum alloys being a common option.
Parameter Comparison
Parameter
IS Value
International
Source
Hydraulic Test Pressure
21 kgf/cm² (approx. 2.1 MPa)
16 bar (1.6 MPa) for tightness test
DIN 14365
Test Duration
2.5 minutes
Not explicitly specified as a single duration; involves pressure stages
DIN 14365
Clamp Body Material
Aluminium Alloy (IS 617) or Leaded-tin bronze (IS 318)
Light metal alloys (e.g., Aluminium)
DIN 14365
Applicable Hose Sizes
63 mm and 70 mm
Type B (for 75 mm hose) and Type C (for 42/52 mm hose)
DIN 14365
Test Leak Simulation
Longitudinal slit of 25 mm
A defined circular hole or slit on a test hose
DIN 14365
Mass (Weight) for 70/75mm clamp
Max 5.0 kg (for Gunmetal), Max 2.5 kg (for Aluminium Alloy)
Max 2.5 kg (for Type B clamp)
DIN 14365
⚠ Verify details from original standards before use
Key Values5
Quick Reference Values
Hydraulic pressure test (no leakage)2.1 MN/m² (21 kgf/cm²) for 2.5 min
Applicable hose nominal bore sizes63 mm and 70 mm
Material for Clamp BodyMalleable cast iron (IS 2108) or Carbon steel forging (IS 2004)
Material for ScrewSteel with minimum tensile strength of 400 MPa
Protective CoatingHot-dip galvanized or zinc plated as per IS 1573
What is the required hydraulic pressure test for a hose clamp?+
The clamp must withstand a hydraulic pressure of 2.1 MN/m² (approx. 21 kgf/cm²) for at least 2.5 minutes without showing any signs of leakage. (Clause 6.1)
What are the standard sizes available for these hose clamps?+
This standard covers two sizes, designed for use on 63 mm and 70 mm nominal bore delivery hoses. (Clause 1.1)
What markings should be present on a compliant hose clamp?+
It must be legibly and indelibly marked with the manufacturer's name or trademark, the size (e.g., '63'), and the year of manufacture. (Clause 8.1)
What materials are specified for the clamp body?+
The body should be made from Malleable cast iron conforming to IS 2108 or Carbon steel forgings conforming to Class 2 of IS 2004. (Clause 3.1)