Frequently Asked Questions – HAKKO EIGHTRON E-TB-25 Polyester-Reinforced PVC Hose (25 × 33 mm, 50 m Roll):

1. What is the HAKKO EIGHTRON E-TB-25 hose?

It’s a clear-blue, polyester-braided PVC pressure hose made in Japan for industrial transfer of air, water, oil, chemicals, and powder.

2. What are the hose’s key specifications?

Inner diameter × Outer diameter: 25 mm × 33 mm

Standard length: 50 m per roll

Maximum working pressure: 1.0 MPa (10 bar) at 20 °C

Temperature range: 0 °C to 60 °C

Minimum bend radius: 175 mm

Color: Transparent blue

3. How is the hose constructed?

A flexible PVC tube is tightly braided with high-strength polyester fibers, combining excellent pressure resistance with remaining lightweight and pliable.

4. Which fluids can it handle?

Designed for general-purpose transfer of air, water, oil, chemicals, and fine powders. For aggressive or highly corrosive chemicals, fluorine-resin hoses are recommended instead.

5. How does it compare to a rubber hose?

Compared to conventional rubber hoses, the E-TB series is significantly lighter, more flexible, transparent for visual flow monitoring, and maintains full 1.0 MPa working pressure despite its low weight.

6. What certifications and compliance does it have?

RoHS compliant (EU Directive 2015/863)

Free of UV-328 additive

TSCA-compliant (no decaBDE, PIP (3:1), 2,4,6-TTBT, PCTP, or HCBD) Certificates for restricted-substance analysis available on request.

7. How do I cut and connect the hose?

The hose is marked at every meter for easy, square cuts.

Use sharp tubing cutters to avoid pinching.

Attach with Hakko E-ELB, E-ELF, or E-FTB series barbed/ferrule fittings for leak-proof joints.

8. How should I store and maintain it?

Keep the hose coiled in a clean, dry area away from direct sunlight and sources of heat. Avoid stacking heavy objects on it and prevent prolonged contact with strong solvents or sharp edges. No special maintenance is required.

9. What common issues might arise and how can I troubleshoot?

Kinking: Ensure bend radius ≥ 175 mm or use a support coil.

Leaks at fittings: Re-cut the hose end squarely, inspect and re-seat the fitting, or replace O-rings/seals.

Contamination: Flush with compatible solvent or replace the hose if residue persists.

10. What is its expected service life and warranty?

Under normal industrial use, hoses can last several years. Hakko typically offers warranty against manufacturing defects, please contact QTE Technologies.

11. Where can I purchase the E-TB-25 hose?

Please contact QTE Technologies.