OEM manufacturer Hearing Aid - Hours Self-contained breathing apparatus – Topsky
OEM manufacturer Hearing Aid - Hours Self-contained breathing apparatus – Topsky Detail:
Applications
Whenever emergency teams are saving lives or extinguishing fires, above or below the ground, HYZ4(B) Self-Contained Closed Circuit Breathing Apparatus comes into its own. Whether used during rescue or fire fighting missions in mines, tunnels or underground train ducts where there is noxious gas or oxygen insufficient emergency, HYZ4(B) Self-Contained Closed Circuit Breathing Apparatus is the first choice. More than 10,000 professional users rely on the HYZ4(B) Self-Contained Closed Circuit Breathing Apparatus in China.
Specially designed for demanding tasks: HYZ4(B) Self-Contained Closed Circuit Breathing Apparatus combines uncompromising safety with outstanding respiratory protection and wearer comfort. Innovative in design, it provides the wearer with up to four hours of breathing air in toxic environments.
Key features
Breathing Oxygen for up to 4 Hours
Highest breathing comfort with an integrated cooling system
Ergonomically shaped carrying plate
Reduced exposure from a well balanced system
Improved harness and intelligent breathing hose routing for excellent freedom of movement
Technical specification
Duration of use | 4 h |
Working pressure for oxygen bottle | 20MPa |
Capacity for oxygen bottle | 2.7L |
Oxygen storage | 540L |
Breathing rate | 30L/min |
Exhaling resistance | (0~600)Pa |
Inhaling resistance | ≤600Pa |
Fixed Oxygen-supplying | ≥(1.4~1.8)L/min |
Automatic Oxygen-supplying | ≥100L/min |
Manual Oxygen-supplying | ≥100L/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 (incl. mask, full oxygen cylinder (aluminum), CO2 absorber and cooling ice) |
Dimensions (H x W x D) | 177 x96 x 227 mm |
Packing Information:
Size:58.8*44.3*21.5cm
Gross weight:12.5kg
Product detail pictures:

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We strive for excellence, services the customers", hopes to be the top cooperation team and dominator business for personnel, suppliers and prospects, realizes benefit share and continual promotion for OEM manufacturer Hearing Aid - Hours Self-contained breathing apparatus – Topsky , The product will supply to all over the world, such as: Cambodia, Vancouver, Nepal, Our staffs are rich in experience and trained strictly, with qualified knowledge, with energy and always respect their customers as the No. 1, and promise to do their best to deliver the effective and individual service for customers. The Company pays attention to maintaining and developing the long-term cooperation relationship with the customers. We promise, as your ideal partner, we'll develop a bright future and enjoy the satisfying fruit together with you, with persisting zeal, endless energy and forward spirit.

The customer service staff's answer is very meticulous, the most important is that the product quality is very good, and packaged carefully, shipped quickly!
