Choosing Ati Fire Hose: Medium, Dimensions and Operating Conditions

Understanding the Ati Fire Hose

The ati fire hose is a reinforced attack hose that wraps a woven polyester outer jacket around an internal lining, creating a composite structure that resists both pressure burst and mechanical abrasion. Hebei FeiFanWei Technology Co.,Ltd. produces this hose in two configurations—single-layer and double-layer—each suited to different pump outputs, deployment terrains, and operational intensities. Choosing between them, and selecting the right diameter, is the primary procurement decision this guide addresses.

Key Selection Criteria

1. Lining Medium

The inner lining determines chemical compatibility, low-temperature flexibility, and long-term pressure retention. The confirmed lining options are:

• Natural rubber — flexible in cold conditions; may degrade with petroleum-based media
• Synthetic rubber — improved chemical resistance over natural rubber
• Synthetic resin — rigid and cost-effective for standard water supply
• Polyurethane (PU) — high abrasion resistance, lightweight, good pressure retention

Both the single-layer and double-layer versions of this product use polyurethane lining (high-quality PU in the double-layer). If your operation requires foam concentrate or corrosive agents, confirm the specific lining grade with the manufacturer before ordering.

2. Outer Surface Construction

The outer jacket shields the lining against ground abrasion, UV, and mechanical impact.

• Single-layer: polyester yarn or polyester filament surface
• Double-layer: thickened polyester filament, with a confirmed adhesion strength between the knitting layer and the lining of ≥ 39 N / 25 mm

Buyers operating on rocky terrain, wildland perimeters, or abrasive industrial floors should favour the thickened-filament double-layer construction for that added jacket durability.

3. Number of Layers and Pressure Rating

This is the most operationally critical choice:

The single-layer hose is suited to standard structural firefighting, training exercises, and lower-intensity deployments where weight matters. The double-layer variant is designed for high-pressure pump systems, extended attack lines, and scenarios where hose failure carries a critical safety risk. Always verify that the selected hose's rated pressure is compatible with your pump's relief-valve setting.

4. Diameter (Specification Sizing)

Both variants are supplied in 30 m rolls. Available diameters are:

Single-layer: 1.0", 1.5", 2.0", 2.5", 3.0"

Double-layer: 1.5" (40 mm), 2.0" (50 mm), 2.5" (65 mm), 3.0" (80 mm)

• 1.0"–1.5" — hand-carry wildland and forestry attack lines where portability is paramount
• 2.0"–2.5" — balance flow capacity with manageable weight for structural attack or relay lines
• 3.0" / 80 mm — supply lines, drafting from static water sources, or connection to vehicle-mounted pumps

Match bore size to your hydraulic calculations rather than simply to existing coupling hardware.

5. Operating Pressure Compatibility

Never specify a hose rated below your pump's maximum relief pressure. The single-layer model carries a working pressure of ≥ 2 MPa. The double-layer is burst-tested to ≥ 12 MPa, providing a substantial safety margin when paired with higher-output portable or truck-mounted pumps.

Buyer's Checklist Before Ordering

1. Flowing medium — Water only, or foam/chemical agents? Confirm lining compatibility for anything other than clean water.
2. Pump output — Does your system operate within ≥ 2 MPa (single-layer) or require the ≥ 12 MPa burst rating (double-layer)?
3. Deployment surface — Rocky or abrasive terrain calls for the thickened polyester filament jacket of the double-layer model.
4. Required diameter — Match bore to hydraulic flow calculations, not just to available couplings.
5. Line length — Both variants ship in 30 m rolls; plan your hose-lay layout in multiples of 30 m.
6. Special conditions — The PU lining and polyester outer jacket are engineered to meet requirements under special conditions, but extreme chemical or temperature exposure should be confirmed with Hebei FeiFanWei Technology Co.,Ltd. before purchase.

Quick-Reference Specification Table

Which Configuration Fits Your Application?

For standard municipal or forestry deployments where weight and pack size matter most, the single-layer model in an appropriate diameter is a pressure-rated, practical option. For high-pressure pump systems, rougher terrain, or scenarios that demand maximum burst resistance, the double-layer variant—with its thickened filament jacket, high-quality PU lining, and ≥ 12 MPa burst pressure—provides the structural margin most procurement teams require.

Hebei FeiFanWei Technology Co.,Ltd. supplies both variants with the confirmed specifications above. Buyers in the US, Middle East, Europe, and Southeast Asia are advised to discuss specific deployment conditions, coupling standards, and any applicable certification requirements directly with the manufacturer before finalising an order.