High-pressure Fire Fighting Flexible Hose

• Specification range: 700/790/915/1000/1200/1500/1800

• Body material: SUS304

• Rated working pressure: FM 232psi/1.6MPa, UL 175psi/1.2MPa, 3C 175psi/1.2MPa

• Certification: FM/UL/3C;

• Thread type: NPT/BSPT

• Inlet specification: DN25

• Outlet specification: DN15/DN20

• Body specification: DN20

• Maximum ambient temperature: 107℃/225℉

• Minimum bending radius: 254mm (FM certification)

Product Description

Engineered for extreme hazardous environments, our Explosion-Proof Fire Fighting Pipe Clamp & Hanger Flexible Hose is the ultimate solution for industries where safety and reliability are non-negotiable. Constructed with forged stainless steel 316L clamps and a PTFE-lined hose, this assembly meets ATEX and IECEx standards for use in Zone 1/21 explosive atmospheres. The robust design features a double-wall hose structure with interlocking metal braids, providing superior protection against impact, abrasion, and chemical penetration. Supporting nominal diameters from 3" to 8", the system handles high-pressure fluctuations in critical firefighting networks while maintaining zero-leak performance under dynamic loads.

Features

Explosion & Impact Resistance: The fully enclosed metal braid over the PTFE hose liner prevents sparks from static discharge, making it ideal for environments with flammable gases, dust, or vapors. The clamp's anti-sparking coating (aluminum-bronze alloy) eliminates ignition risks during installation or maintenance.

Extreme Chemical Compatibility: The PTFE liner resists virtually all industrial chemicals, including sulfuric acid, solvents, and hydrocarbons, outperforming traditional rubber hoses in petrochemical and pharmaceutical plants. Temperature rating spans -100°F to 500°F (-73°C to 260°C), ensuring functionality in cryogenic storage and high-temperature processing zones.

Rugged Mechanical Design: The heavy-duty hanger bracket supports up to 1,000 lbs of vertical load, with a 抗震 (seismic-resistant) design that meets ASCE 7-16 standards for earthquake-prone regions. The self-locking clamp mechanism features dual locking nuts to prevent loosening from prolonged vibrations or pressure surges.

Certification & Compliance: Holds full certification for use in Class I, Division 1 hazardous locations, with third-party testing for flame propagation and electrical conductivity. The smooth-bore PTFE liner reduces water flow resistance, improving pressure consistency in large-scale suppression systems.

Application

Tailored for high-risk industrial environments, this product is essential for:

Oil & Gas Refineries: Safeguards firewater systems in offshore platforms, tank farms, and processing units exposed to explosive hydrocarbons.

Mining & Mineral Processing: Resists abrasive dust and heavy machinery vibrations in underground mines and ore handling facilities.

Chemical Manufacturing Plants: Handles aggressive chemicals in reaction vessels, storage tanks, and distribution pipelines.

Military Installations: Meets stringent defense standards for use in ammunition storage areas and aircraft hangars, ensuring reliability in combat zones.

FAQ

Q: Can this hose be used in vacuum applications?

A: Yes, the metal braid reinforcement supports full vacuum conditions up to 29" Hg, making it suitable for combined pressure-vacuum fire suppression systems.

Q: How does it perform in saltwater immersion?

A: The 316L stainless steel components offer superior saltwater resistance, with a 1,000-hour salt spray test rating (ASTM B117), ideal for coastal refineries and marine vessels.

Q: What is the recommended torque for clamp bolts?

A: Torque specifications vary by diameter (30-80 ft-lbs), detailed in the installation manual. Always use torque wrenches to ensure proper sealing.

Q: Does the explosion-proof rating apply to all weather conditions?

A: Yes, the system is tested for IP68 ingress protection, resisting water submersion (up to 10 meters) and extreme weather in outdoor hazardous zones.

Installation  Instruction

1. Installing sprinkler heads	2. Install the water inlet	3. Connect the water inlet to the hose
4. Install square tubes and fasteners	5. Fixed water outlet	6. Installation completed diagram