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