EPDM Steam Hose: DN13, 270 psi – The Professional Choice for Saturated Steam Transfer

 1. Product Overview

The EPDM (ethylene propylene diene monomer) steam hose is a specialist hose for industrial saturated steam transfer. Taking Letone’s LT1004-A/B as an example, the nominal bore is DN13 (13 mm) , maximum working pressure 270 psi (≈18.6 bar) , burst pressure ≥ 2700 psi ( 10:1 safety factor ), operating temperature -40℃ to +220℃ , and minimum bend radius only 127 mm (5 inches) . Critical note: This hose is intended only for saturated steam – never use it for superheated steam or mineral oil media.

2. Three‑Layer Structure Working Together

• Inner tube: Black EPDM rubber, resistant to 220℃ heat and saturated steam – no swelling, no degradation.

• Reinforcement: High‑tensile steel wire braid, withstands 270 psi working pressure and frequent impulses while maintaining dimensional stability.

• Outer cover: Red/black EPDM with a unique pinhole‑textured surface – allows permeated gases to escape safely, preventing delamination (blisters or peeling) between the cover and reinforcement. It is also abrasion‑resistant, ozone‑resistant, and weather‑resistant.

3. Key Performance Advantages

• 10:1 ultra‑high safety factor: Burst pressure is 10 times the working pressure, far exceeding conventional hydraulic hoses (4:1) and providing ample safety margin for high‑temperature, high‑pressure steam service.

• Anti‑delamination pinhole technology: Solves the common problem of outer cover blistering and peeling in steam hoses, significantly extending service life.

• Wide temperature adaptability: Remains flexible at -40℃ and does not soften or deform at 220℃, suitable for industrial environments worldwide.

• Chemical resistance: EPDM material offers good tolerance to hot water, weak acids/alkalis, alcohols, ketones, and ethylene glycol.

4. Typical Applications

• Shipyards: Hull cleaning, pipeline purging, fuel oil heating, steam‑driven equipment.

• Chemical plants: Jacketed reactor heating, distillation column steam supply, equipment tracing.

• EPS foam production: Continuous steam delivery to foaming machines – excellent high‑temperature fatigue resistance.

• Industrial equipment cleaning: Connection hose for high‑pressure steam cleaners – lightweight and flexible.

• Rubber vulcanization: Steam lines for compression molding presses and autoclaves.

5. Selection & Usage Guidelines
✅ Confirm the medium is saturated steam, system maximum pressure ≤ 270 psi, temperature ≤ 220℃.
✅ During installation, bend radius ≥ 127 mm; always use original certified steam‑specific crimped couplings.
✅ Before each use, inspect the outer cover for cuts or blisters; periodically perform a hydrostatic test at 1.5 times the working pressure.
❌ Never use for superheated steam, mineral oil, fuel oil, or aromatic solvents.