Short answer
In concrete hose, the hose body, end connection and coupling system must be verified together. The same diameter or a similar coupling profile does not show that different parts will work together safely under pressure. The connection requirements of the pump and line manufacturer must be included in the technical file.
Technical explanation
Concrete transfer involves abrasion, a heavy assembly and pressurized operation all together. The hose connection is assessed not only for sealing but also for mechanical retention. Selecting a clamp or coupling by appearance, combining different end geometries, or using assembly dimensions of unknown origin is not a reliable approach. Wear, deformation and connection condition in the end zone should be recorded. Operations such as clearing blockages cannot be derived from this informational article; they require an equipment procedure.
Topic-specific checkpoints
| Item | Description |
|---|---|
| System identity | Pump/line type and the manufacturer's connection requirement. |
| Hose | Model, size, operating condition and suitability for abrasive service. |
| Ends | Profile drawing, connection method and compatible coupling. |
| Acceptance | Visual inspection, traceability and required test documents. |
How is it assessed in practice?
On the order drawing, in addition to the hose inside diameter and length, include the end profile, the mating coupling and the definition of the overall assembly. Clarify the phrase 'connections on both ends' in the quotation by whether the coupling is included. As an example, the existing system being referred to as 4 inch does not mean all 4 inch ends are the same. When deriving the nominal connection size from a worn sample, check it against the manufacturer's drawing; do not use a damaged profile as the target for new manufacturing.
Original editorial recommendation; not a clause of a standard.
Frequently asked questions
If the existing coupling closes, is it suitable for the new hose end?
This is not sufficient evidence. End geometry, tolerances, service class and manufacturer pairing must be verified; being able to close is not on its own approval of mechanical retention.
Source coverage
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S017
Parker Safety Guide, Publication 4400-B.1 Parker Hannifin · accessed 2026-10-20 PDF page 4; 5.1 Maintenance Programme, 5.2 Visual Inspection, 5.3 Other Inspection and 5.6 Hose Inspection and Failure | PDF page 3; 3.1 Component Inspection, 3.2 Hose and Fitting Assembly and 3.3 Related Accessories | PDF page 2; 2.2 PressurePDF page 3; 3.1 Component Inspection, 3.2 Hose and Fitting Assembly and 3.3 Related Accessories | PDF page 2; 2.8 Routing, 2.10 Mechanical Loads and 2.11 Physical DamagePDF page 4; 5.1 Maintenance Programme, 5.2 Visual Inspection, 5.3 Other Inspection and 5.6 Hose Inspection and Failure
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S036
Industrial Hose Safety Connections Gates · accessed 2026-10-19 PDF pp. 6–8 construction and selection; pp. 10–19 maintenance; pp. 21–27 special services