IS 3744:1985 is the Indian Standard (BIS) for specification hose binding machine. This standard prescribes the requirements for materials, dimensions, construction, and performance of hose binding machines used primarily by fire services to securely bind fire delivery hoses to couplings.
Specification hose binding machine
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Frame Material | Cast Iron, conforming to Grade FG 200 of IS 210 | Welded steel construction or high-grade cast iron (e.g., EN-GJS-400-15) | DIN 14827 |
| Hose Diameter Capacity | Suitable for binding hoses up to 70 mm nominal bore | Designed for standard hose sizes, including B (75mm) and A (110mm), often offering broader capacity. | DIN 14827 |
| Binding Wire Specification | 1.4 mm galvanized steel wire conforming to IS 280 | Specific galvanized or stainless steel binding wire according to a dedicated standard (e.g., DIN 14828-1) | DIN 14827 |
| Performance Test Pressure (on assembly) | 2.1 MPa (21.4 kgf/cm²) | New hose assemblies must withstand proof pressures often exceeding 4.1 MPa (600 psi) without slippage. | NFPA 1962 |
| Gear Mechanism | Worm and worm wheel mechanism made of mild steel | Worm gear drive (Schneckengetriebe), valued for high torque and non-reversibility, made from case-hardened steel. | DIN 14827 |
| Portability | Not specified; implies a heavy, stationary bench-mounted unit. | Standards may differentiate between stationary (Werkstattgerät) and portable (Fahrzeuggerät) devices, with weight limits for portability. | DIN 14827 |