Manufacturer: KOKEN LTD.
Model: ASG815 and ASG815G

OVERVIEW OF VITAS COMPRESSED AIR BREATHING APPARATUS

• This is a Self-Contained Breathing Apparatus (SCBA), where the user carries a high-pressure compressed air cylinder (hereinafter referred to as the cylinder). The pressure is reduced in 2 stages to ambient pressure to provide clean air to the wearer. The device allows for safe operation without inhaling air in a hazardous working environment.
• Because the air is supplied from the cylinder carried by the user, the range of movement is not restricted like airline masks, allowing use over a wide area. (However, the usage time will be limited by the amount of air in the cylinder).
• Complies with the JIS T 8155 standard.

HARNESS SECTION (CARRIER)

Excellent wearability thanks to an ergonomic design.

Burden on shoulders and lower back significantly reduced through load distribution (Series III)
The harness backplate is made of high-strength polyethylene plastic, features a 3D curve, is lightweight, and provides an excellent wearing feel. Wide lumbar pads and wide shoulder pads support the cylinder, distributing the weight acting on the wearer’s back, shoulders, chest, and lower back, thereby significantly reducing the burden during work and improving the fit.

Alarm Whistle Focus on safety and audibility

Assuming use in noisy sites, the alarm whistle is positioned close to the ear.

Pressure Gauge Can be checked even in the dark

The pressure gauge uses luminous paint, allowing users to check the scale graduations even in the dark.

Saver (Auxiliary Mask) [Optional]

Rescue Saver can be installed
This is a Saver (auxiliary mask) that can supply air from the cylinder to the victim during a rescue.
(A Saver coupling is required for the auxiliary mask. Also, it cannot be used for the Vitas anti-static/grounded type).

Pressure Reducer 29.4MPa Specification, Lightweight and Compact (Series III)

Vitas III has standardized the pressure reducer specifications at 29.4MPa. Functionality is enhanced thanks to a compact, lightweight design that eliminates redundant parts. The medium-pressure hose is a one-piece type that improves work efficiency. A Saver coupling can be connected. (Saver coupling specification is built-to-order).

One-Touch Cylinder Band Supports quick cylinder replacement

The one-touch buckle allows for quick cylinder replacement (comes with a safety lock mechanism). Most types of cylinders for breathing apparatuses can be installed by adjusting the mounting bracket.

Demand Valve

The Vitas demand valve has a large maximum flow rate, allowing sufficient respiration even during heavy work. Because the inhalation resistance remains almost unchanged even when the supplied air pressure changes, users can breathe smoothly.

There are 2 types of demand valves

Demand pressure type <Automatic> (Automatic positive pressure) – III-A

Demand pressure type (Manual switching) – III-P

Facepiece High Scope V Type Mask

Uses a highly airtight HAWC lip

HAWC lip face contact part

Equipped with a speech diaphragm (voice emitter)

Uses the “HAWC lip※” with a wide, flexible lip and a special curved face contact shape, creating our company’s unique suction cup effect. Achieves high airtightness, wide field of vision, and lightweight. Comes with a speech diaphragm that allows conversation even while wearing the mask.

※Abbreviation for High Adaptable Wide Concave

■ Head Harness – Selectable from 2 types

Superior in quick donning and stability.
Mesh Harness Type

Provides a secure wearing feel. (Standard specification).
Rubber Harness Type

CYLINDERS FOR BREATHING APPARATUS

Product Name: Maverick ASG815 / ASG815G

Reliable high-quality domestic (Japan) GFRP cylinder
Cylinder Type: Aluminum-Fiberglass FRP composite cylinder

Detailed Introduction:

Maverick is a breathing apparatus cylinder brand from a domestic (Japan) cylinder manufacturer with a proven track record.
This is a high-quality Aluminum-Fiberglass FRP composite cylinder, manufactured based on solid technical capabilities and quality control processes cultivated over many years.

■ Product Specifications

The values for volume, weight, length, and air capacity are nominal values.

a) ASG815G is additionally equipped with a pressure gauge at the top.
b) Usage time varies depending on working conditions, breathing rate, and cylinder charging pressure.
The above value applies to breathing conditions of about 20–60L/min.
c) Complies with JIS B 8246 standard (high-pressure gas cylinder valves).

OPTIONAL ACCESSORIES (OPTION GOODS)

Used to protect and prevent scratches on the FRP (Fiber Reinforced Plastic) surface layer.

Material: Soft Polyvinyl Chloride (Soft PVC).
Cover types:

• Cover for 8.4-liter cylinder.
• Cover for the valve head of the cylinder.

HIGH-PRESSURE COMPRESSED AIR CYLINDERS FOR VITAS

Below are important technical notes regarding the cylinder types listed in the catalog (the detailed table may be in the cropped section, but these are the specified parameters):

※1: Types equipped with a pressure gauge are also available.
※2: The air capacity of cylinders with a maximum charging pressure of 29.4 MPa has been calculated taking into account the compressibility factor.
※3: This weight or parameter does not include the stop valve.
※4: The listed weight is a reference weight at the time of maximum pressure charging and includes the stop valve.
※5: The Maverick ASG815 cylinder for Touden Vitas (anti-static line) is equipped with an additional rubber cover on the stop valve handle; the remaining specifications are exactly the same as the standard Maverick ASG815 cylinder.

Type ※1	Code	Cylinder	Volume (ℓ)	Material	Pressure (MPa)	Air Capacity (ℓ)	Usage Time (min)	Length (mm) ※3	Outer Diameter (mm)	Weight (kg) ※4
ASG815	843	※5	8.4	Aluminum alloy fiberglass FRP cylinder	14.7	Approx. 1260	Approx. 21～63	Approx. 507	174	Approx. 6.2
NS851A	–		8.5	CFRP (Carbon fiber · Aluminum alloy)	14.7	Approx. 1270	Approx. 21～63	Approx. 495	Approx. 173.5	Approx. 5.2
NS473A	–		4.7		29.4	Approx. 1260 ※2	Approx. 21～63	Approx. 470	Approx. 138	Approx. 4.7
NS683A	–		6.8			Approx. 1830 ※2	Approx. 30～91	Approx. 456	Approx. 171	Approx. 6.3
8	8		8	Chrome-molybdenum steel	14.7	Approx. 1200	Approx. 20～60	Approx. 520	Approx. 165	Approx. 9.7

DANGER

1. Time:
   Usable time will vary depending on working conditions, breathing rate, and cylinder charging pressure, etc.
   The usage mentioned above (under atmospheric pressure) corresponds to working conditions with a breathing rate of approx. 20ℓ ~ 60ℓ/min.
2. Usage time in a high-pressure environment will become shorter in inverse proportion to the ambient pressure, so please pay close attention.
3. Never use any gases other than air for the Vitas apparatus. In particular, absolutely never install an oxygen cylinder.