Beijing  Topsky  Century Holding Co.,Ltd
                                                                                                           
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Since 2003
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HYZ4(B) 4-Hour Self-Contained Closed Circuit Breathing Apparatus with 20MPa Oxygen Pressure and 540L Storage Capacity

Price Negotiable
Price: Negotiable
MOQ: 1 Set
Delivery Time: Negotiable
Brand: TOPSKY
Product Description
Product Overview

The HYZ4(B) Self-Contained Closed Circuit Breathing Apparatus provides up to 4 hours of respiratory protection in toxic environments where oxygen is insufficient or noxious gases are present. Designed for emergency rescue and firefighting operations in mines, tunnels, and underground facilities.

Applications

Ideal for emergency response teams performing life-saving operations and fire suppression in confined spaces including mines, tunnels, subway ducts, and other underground environments with hazardous atmospheric conditions.

Key Features
  • Extended 4-hour breathing duration with oxygen supply
  • Integrated cooling system for enhanced comfort during extended use
  • Ergonomically designed carrying plate for optimal weight distribution
  • Well-balanced system design to minimize user exposure
  • Advanced harness system with intelligent breathing hose routing for maximum mobility
Technical Specifications
Parameter Specification
Duration of Use 4 hours
Working Pressure (Oxygen Bottle) 20 MPa
Oxygen Bottle Capacity 2.7 L
Oxygen Storage 540 L
Breathing Rate 30 L/min
Exhaling Resistance 0-600 Pa
Inhaling Resistance ≤600 Pa
Fixed Oxygen Supply ≥1.4-1.8 L/min
Automatic Oxygen Supply ≥100 L/min
Manual Oxygen Supply ≥100 L/min
Start Pressure (Auto-supplying Valve) 10-245 Pa
Inhaling CO₂ Concentration ≤1%
Inhaling Oxygen Concentration >21%
Weight (Ready for Use) 12 kg (includes mask, full oxygen cylinder, CO₂ absorber, and cooling ice)
Dimensions (H × W × D) 177 × 96 × 227 mm

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

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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