Beijing  Topsky  Century Holding Co.,Ltd
                                                                                                           
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Since 2003
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HYZ4(B) Self-Contained Closed Circuit Breathing Apparatus with 4-Hour Duration and 2.7L Oxygen Bottle Capacity

Price Negotiable
Price: Negotiable
MOQ: 1 Set
Delivery Time: Negotiable
Brand: TOPSKY
Product Description
The HYZ4(B) Self-Contained Closed Circuit Breathing Apparatus is a professional-grade respiratory protection system designed for emergency response teams operating in hazardous environments with toxic gases or oxygen-deficient conditions.
Applications
This breathing apparatus is essential for rescue and firefighting operations in mines, tunnels, underground train ducts, and other confined spaces where noxious gases or oxygen insufficiency pose serious threats. Trusted by over 10,000 professional users across China, it delivers uncompromising safety combined with superior respiratory protection and wearer comfort.
Key Features
  • 4-hour breathing duration with oxygen supply in toxic environments
  • Integrated cooling system for maximum breathing comfort
  • Ergonomically shaped carrying plate for optimal fit
  • Well-balanced system design to reduce user exposure
  • Improved harness and intelligent breathing hose routing for excellent freedom of movement
Technical Specifications
Parameter Specification
Duration of Use 4 hours
Working Pressure for Oxygen Bottle 20 MPa
Capacity for Oxygen Bottle 2.7 L
Oxygen Storage 540 L
Breathing Rate 30 L/min
Exhaling Resistance 0-600 Pa
Inhaling Resistance ≤600 Pa
Fixed Oxygen-supplying ≥1.4-1.8 L/min
Automatic Oxygen-supplying ≥100 L/min
Manual Oxygen-supplying ≥100 L/min
Start Pressure for Auto-supplying Valve 10-245 Pa
Inhaling Carbon Dioxide Concentration ≤1%
Inhaling Oxygen Concentration >21%
Weight, Ready for Use 12 kg (including mask, full oxygen cylinder, CO2 absorber, and cooling ice)
Dimensions (H x W x D) 177 x 96 x 227 mm

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Company Beijing  Topsky  Century Holding Co.,Ltd
Location 10B NO.17 HuanKe Middle Road Jin Qiao Industry Base Tongzhou District Beijing China 101102
Contact Person Yang

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