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IS 3582:1984 is the Indian Standard (BIS) for basket strainers for fire fighting purposes (cylindrical type). This standard prescribes the requirements for material, shape, dimensions, and workmanship of cylindrical basket strainers used at the suction end of fire fighting pumps to prevent debris from entering and damaging the impeller.
basket strainers for fire fighting purposes (cylindrical type)
Consolidated list per BIS. For the text of each amendment, refer to the BIS portal link above.
aluminum alloycopper alloyleaded tin bronzegalvanized steel
International Equivalents
Similar International Standards
NFPA 1964:2023National Fire Protection Association (NFPA), USA
HighCurrent
Standard for Spray Nozzles and Appliances
Directly covers design, performance, and testing of suction hose strainers as fire hose appliances.
NFPA 1142:2022National Fire Protection Association (NFPA), USA
MediumCurrent
Standard on Water Supplies for Suburban and Rural Fire Fighting
Specifies operational requirements for drafting sites, including the use of strainers, often referencing NFPA 1964.
BS EN 1028-1:2002+A1:2008British Standards Institution (BSI), UK / European Committee for Standardization (CEN)
LowCurrent
Fire-fighting pumps - Fire-fighting centrifugal pumps with primer - Part 1: Classification - General and safety requirements
Mandates that a suction strainer be provided with the fire pump but does not specify detailed strainer construction.
Key Differences
≠Material Specification: IS 3582 is prescriptive, specifying materials like Mild Steel (MS) and Galvanized Iron (GI), while international standards like NFPA 1964 are performance-based, requiring 'corrosion-resistant materials' without naming specific types.
≠Design Philosophy: IS 3582 provides detailed dimensional tables and drawings for specific sizes. In contrast, NFPA 1964 focuses on performance criteria, such as minimum waterway area ratio and maximum opening size.
≠Durability Testing: NFPA 1964 includes a mandatory durability drop test from a height of 3 ft (0.9 m) onto a concrete surface. IS 3582 has no such requirement for physical impact resistance.
≠Coupling Specification: IS 3582 requires couplings to conform to Indian Standard IS 903 (Round Thread Suction Hose Couplings), whereas NFPA 1964 requires compliance with NFPA 1963, which primarily specifies National Hose (NH) threads for the US market.
Key Similarities
≈Core Purpose: Both IS 3582 and its international counterparts define a device to be attached to a fire pump suction hose to prevent debris from entering and damaging the pump.
≈Waterway Area Requirement: Both the IS code and NFPA 1964 mandate that the total open area of the strainer (waterway) must be at least twice the area of the suction hose inlet to ensure adequate flow and prevent cavitation.
≈Basic Form Factor: All standards generally describe a cylindrical or 'basket' type strainer with a perforated body and a fitting for hose connection, indicating a common design solution.
≈Pressure Testing: Both standards require the strainer's coupling/body to withstand a significant hydrostatic pressure test (around 20-21 bar) to ensure integrity under operating and surge pressures.
Parameter Comparison
Parameter
IS Value
International
Source
Minimum Waterway Area
Not less than twice the area of the nominal bore
At least twice the area of the hose inlet
NFPA 1964:2023
Maximum Strainer Opening
Perforations of 6 mm to 10 mm diameter depending on size
Shall not permit a 6.4 mm (1/4 in.) sphere to pass through
NFPA 1964:2023
Hydrostatic Pressure Test
21 kgf/cm² (approx. 20.6 bar) for 2.5 minutes
300 psi (approx. 20.7 bar) for 1 minute
NFPA 1964:2023
Body Material
Mild steel sheet (1.25 mm) or Galvanized Iron sheet (1.6 mm)
Corrosion-resistant materials (performance-based)
NFPA 1964:2023
Physical Durability Test
Not specified
Must withstand a 3 ft (0.9 m) drop onto concrete without breakage or permanent deformation
NFPA 1964:2023
Handle Requirement
Mandatory handle made of 12 mm dia MS rod
Not explicitly required, but if present, must meet general ruggedness and usability criteria
NFPA 1964:2023
⚠ Verify details from original standards before use
Key Values3
Quick Reference Values
Nominal sizes covered75 mm, 100 mm, 125 mm, and 140 mm
Minimum total area of strainer holesAt least 2.5 to 3 times the cross-sectional area of the inlet
Maximum diameter of strainer holesTypically 5 mm to 7 mm to prevent large debris ingress
Tables & Referenced Sections
Key Tables
Table 1 - Requirements of Materials
Table 2 - Dimensions of Basket Strainer (Cylindrical Type)