Selecting an industrial hose means confirming twelve things before the purchase order: medium (with concentration and cleaning agents), working pressure at temperature, temperature envelope, bore, length and routing, bend radius, end fittings with the correct retention method, mechanical environment, regulatory certificates, electrical properties, assembly documentation and a replacement policy. The STAMPED mnemonic (Size, Temperature, Application, Media, Pressure, Ends, Delivery) covers the headline items; this checklist closes the gaps that still cause failures. For the parameter theory behind each number, see the companion specifications deep-dive.
The 12-point industrial hose buying checklist
1. Identify the medium — completely
Document the fluid name, concentration and temperature, plus every secondary medium: flushing fluids, CIP/SIP cleaning chemistry, steam sterilisation. Tube-medium incompatibility is the single most common root cause of catastrophic hose failure, and the damage is invisible from outside. The core compound rules:
| Tube compound | Suits | Never use with |
|---|---|---|
| NBR | Fuels, mineral oils | Hot aromatics, ketones |
| EPDM | Water, steam, many chemicals, ketones | Oils and fuels — swells rapidly |
| FKM | High temperature, aggressive chemistry, aromatics | Ketones |
| UPE | Concentrated acids and alkalis, solvents | Verify per medium |
| PTFE | Near-universal chemistry, −70 to +260 °C | Abrasive slurries (poor abrasion) |
| Silicone | High temperature, food/pharma | Aromatics, high-pressure steam |
Cross-check the manufacturer's resistance table for the specific compound — generic elastomer charts are not a purchasing document.
2. Working pressure — at temperature, per size
Record maximum steady-state pressure and peak transients (water hammer can exceed steady state by 50–200 %), then read the hose rating for the exact DN at the operating temperature. Catalogue values are quoted at +20 °C and derate as temperature rises; and within any hose family, working pressure falls as DN rises — never carry one figure across a size range. In hydraulics the slope is steep: EN 853 2SN runs from 415 bar at DN 6 to 80 bar at DN 51.
3. Safety factor — by hose class, not by habit
Safety factors are class-specific: braided hose 4:1, unreinforced hose around 5:1, PTFE hose 3:1, ultra-high-pressure water-jetting hose a minimum of 2.5:1 per EN 1829-2. Burst pressure is a qualification figure, never an operating reserve; proof testing runs at about 1.5 × working pressure (ISO 1402 method). And PN class of the connected pipework is a flange rating system — not the hose's working pressure.
4. Temperature envelope
State minimum start-up temperature, continuous operating temperature and excursion peaks — for both tube and cover. For saturated steam, remember pressure and temperature are coupled: steam hose to EN ISO 6134 comes as type 1 (6 bar / 164 °C) and type 2 (18 bar / 210 °C), and steam hoses accept bolted safety clamps only (EN 14420-3 / DIN 2817) — never crimped ferrules and never cam-and-groove couplings.
5. Bore (DN) from flow, not from the old order
Target roughly 2–4 m/s for liquids in pressure lines, ≤ 3 m/s on suction (cavitation), and appropriately higher for gases. Undersizing costs energy and erodes the tube; oversizing costs capital and space.
6. Length and routing
Measure the routed length with all bends, allow slack for pressure-induced length change and machine movement, and never install a hose in torsion — a few degrees of twist measurably shortens life.
7. Minimum bend radius
Verify the tightest bend in the installation (including dynamic positions) against the hose MBR — bend-radius violations are among the most frequent causes of reinforcement fatigue. Use elbows and guides rather than forcing the hose.
8. End fittings — interface AND retention
Specify the thread or coupling standard precisely (BSPP parallel vs BSPT/NPT tapered — and NPT ≠ BSPT; Camlock to EN 14420-7 for liquids only, never compressed air or gases; Storz, Guillemin and TW are separate, non-interchangeable systems) and the body material (steel, 316L, brass). Then specify the retention: crimped ferrule to the hose manufacturer's data, or bolted safety clamps (EN 14420-3) — mandatory for steam and standard practice for heavy-wall chemical and S&D hose.
9. Mechanical environment and cover
Document abrasion, UV/ozone, oil mist, chemical splash and impact. Choose the cover accordingly — abrasion-resistant compounds or sleeves for dragging duty (see the abrasion-resistant cover comparison), EPDM or CR for weather, wrapped covers for heat. The cover must resist the environment; the tube resists the medium — two separate checks.
10. Regulatory and food-contact certificates
For food and pharma: EC 1935/2004 + GMP 2023/2006 as the EU frame, with FDA 21 CFR 177.2600 for rubber compounds and 177.1550 for PTFE; note that Regulation 10/2011/EU applies to plastics only — it does not cover rubber or silicone. Certificates apply to a specific medium and hose version — verify yours is covered. Add 3-A or USP Class VI where the process demands. For pressure equipment in scope of PED 2014/68/EU, require the conformity documentation.
11. Electrical properties (ATEX)
For flammable media or explosive atmospheres (ATEX 2014/34/EU zones), specify electrically conductive or bonded assemblies — resistance verified by testing to ISO 8031, with continuity across the fittings. Require the test certificate; "antistatic" as a catalogue adjective is not evidence.
12. Documentation and replacement policy
Require a proof-test certificate, material/compliance declarations and batch traceability with every assembly, and set the inspection and replacement interval at purchase time — by operating hours for dynamic duty, by calendar for static lines — rather than after the first failure.
Quick reference: hose families and their standards
| Application | Typical standard | Key numbers |
|---|---|---|
| Hydraulics, wire braid | EN 853 (1SN/2SN) | 250→40 bar / 415→80 bar with DN |
| Hydraulics, spiral | EN 856 (4SP/4SH, R12/R13/R15) | up to 420 bar; R-types constant-pressure |
| Chemical S&D | EN 12115 | 16 bar class, conductivity variants |
| Steam | EN ISO 6134 | type 1: 6 bar/164 °C; type 2: 18 bar/210 °C |
| Oil tanker transfer | EN 1765 | heavy-wall S&D |
| Water jetting (UHP) | EN 1829-2 | SF ≥ 2.5:1 |
| Corrugated metal | EN ISO 10380 | full vacuum, −196 to ~+550 °C |
Browse the industrial hose range and industrial fittings, or run a search for chemical hose to compare certified constructions.
Worked example: applying the checklist
A brewery needs a DN 40 hose for hot wort transfer at 85 °C with CIP (caustic, 80 °C) and occasional steam sterilisation. Criterion 1 rules out NBR (hot aqueous duty) and points to EPDM or platinum-cured silicone in food quality; criterion 4 flags the steam step — if sterilisation runs as genuine saturated steam rather than hot water, either the hose is rated for it or a separate EN ISO 6134 steam hose does that job. Criterion 10 demands EC 1935/2004 + FDA 21 CFR 177.2600 certification covering this medium and temperature; criterion 8 sets stainless fittings with the manufacturer's retention method rather than generic clamps; criterion 12 fixes an inspection interval aligned with CIP frequency, because caustic cycles age the tube faster than the wort does. Ten minutes with the checklist — and the assembly survives both the process and the audit.
Installation and inspection essentials
Fit assemblies without torsion, keep straight tangents behind fittings, sleeve or guide any point contacting an edge, and pressure-test new assemblies at 1.5 × WP before service. Inspect on a fixed schedule: exposed reinforcement, kinks, soft or hardened wall sections, fitting movement and cover blistering are immediate removal criteria. On steam hose, add a strict regime — popcorning of the tube from wet-steam cycling is a known killer, and bolted clamps must be re-checked after first heat-up.
Cost: the hose is the cheap part
Purchase price is typically a small fraction of lifetime cost once downtime, fluid loss, cleanup and audit findings are counted. One unplanned stop in a process plant usually exceeds the price difference between the right hose and the cheap hose by an order of magnitude. Standardise specifications across the site, buy assemblies with certificates, and replace on schedule rather than on failure.
Send us the checklist — get back a tested assembly
Complete the twelve points and send them over: our engineering team selects hose and fittings, assembles with the correct retention method, pressure-tests and documents every assembly. Browse industrial hoses, check the technical catalogues and industry applications, or request a quotation.