Hyperlite SL3 - Hyperbaric Chamber

The HyperLite SL3 Lightweight Single-Lock Hyperbaric Chamber is a next-generation, multi-occupant hyperbaric system engineered for advanced military, offshore, and remote medical operations. Designed in compliance with ASME PVHO-1 Case 18, the SL3 utilises SOS Group’s patented flexible braided pressure vessel technology, delivering a highly durable yet significantly lighter alternative to traditional rigid chambers. 

Configured as a single-lock system for multiple occupants, the SL3 enables hands-on medical treatment within the chamber, allowing a medical attendant to accompany the casualty throughout therapy. This capability significantly enhances patient outcomes in complex or critical scenarios where continuous intervention is required. 

The chamber is built for rapid mobilisation and deployment, with a modular, skid-mounted system incorporating an exoskeleton frame for lifting and transport. Its design supports operations across land, maritime, and aviation environments, including austere military theatres where durability and reliability are critical. 

Capable of operating at treatment pressures up to 3 or 5 bar, the HyperLite SL3 supports a wide range of recompression and mixed-gas dive tables, providing a robust solution for advanced diving injuries and hyperbaric medical treatments. 

KEY FEATURES

• Multi-Occupant Single-Lock System – Designed for patient + attendant, enabling hands-on treatment 
• Advanced Pressure Capability (3–5 Bar) – Supports complex recompression and mixed-gas dive tables 
• Patented Flexible Pressure Vessel Technology – Lightweight, foldable design with high durability 
• Rapid Deployment & Modular Design – Skid-mounted system with forklift and crane handling capability 
• Military-Ready Construction – Designed for harsh environments, including resistance to ballistic impact 
• Integrated Control System – Manages chamber pressure, breathing gas, and oxygen isolation
• Built-In Monitoring Systems – Continuous tracking of O₂, CO₂, temperature, and humidity with alarms 
• Duplex Communications System – Real-time communication between operator, attendant, and patient 
• Large Viewports – Full visibility for patient monitoring and operational safety
• Modular Gas Storage System – Scalable cylinder racks (20–50L up to 300 bar) for mission-specific requirements 
• Foldable Pressure Vessel – Compact transport and storage footprint

Description	Imperial	Metric
Maximum Operating Pressure	75 fsw / 3.3 ATA	23 msw / 2.3 Bar(g)
Length - Main Lock	98 in.	250 cm
Internal Diameter	42 in.	107 cm
Window Thickness	1.7 in.	4.31 cm
Window Diameter	22.19 in.	56.36 cm
Oval Entry Hatch (max.)	22(v) x 26(h) in	56(v) x 66(h) cm
Main Lock - Volume	80 cu ft	2,248 litres
Design Pressure	103 fsw	31.5 msw
Max. Allowable Working Pressure	98 fsw	30 msw
Production Test Pressure	147 fsw	45 msw
PVHO Test Pressure (6 x MAWP)	591 fsw	180 msw

WEIGHT
The SL3 utilises the SOS Group patented lightweight pressure vessel technology, reducing weight when compared to traditional transportable hyperbaric chambers. This benefits the end user by making the system light enough for to transport by pallet truck, crane or (with certain models) multiple-person human lift capability.
The image displays the Hyperlite SL3 prior to pressurisation. The main fabric body is flaccid, keeping system lightweight.


PACKAGED VOLUME
The SL3 is modular in design, making each case more manageable for lifting, mobilisation and storage. The Packaged Volume of the main chamber is just 1.58m³  and weighs just 230 kg, particularly attractive onboard vessels where space is at a premium and minimising weight is important. An additional exoskeleton allows lifting lugs to be attached to the top of the chamber for overhead lift.


CERTIFICATIONS
At SOS Group, Quality and Safety are the absolute priority. All of our chambers are designed to meet the highest safety standards. That’s what makes us the preferred choice for most militaries around the world. Our SL3 Chamber is designed and built to comply with ASME-PVHO-1 under approved Case 18 (you can be found online through asme.org).


MAXIMUM OPERATING PRESSURE
Now suitable for O2 or Mixed Gas Use
The Hyperlite SL3 and DL5 Pressure Vessels exceeded all previous known pressure limits for textile pressure vessels anywhere in the world. Our prototype testing took the pressure vessels to an impressive 246 msw (24.6 Bar / 25.6 ATA) without failure, allowing our pressure vessels to be rated to up to 50 msw (5 bar/5 ATA) as per the requirements of ASME-PVHO-1. These pressures allow the system to be operated in accordance with some dive tables that require mixed gas use. The dive table used is controlled by the operator, who has complete control over pressure and breathing gas throughout the treatment.


OCCUPANTS
Hands-on Medical Attention throughout treatment
The SL3 System standard set up is designed for 2 occupants – 1 x patient and 1 x attendant, enhancing patient care capabilities of the system by allowing hands-on medical care to take place throughout a treatment and therefore expanding the scope for treatment in more critical incidents. Additional gas masks can be provided for emergency situations, increasing the number of personnel to 3, sitting upright inside the chamber.

DESIGN CODES & STANDARDS
✔	DESIGN CODES	ASME PVHO-1 (2019) & Case 18, UKCA (UK Medical Device Regulation 2002 - UK MDR2002)
✔	TEST WITNESSING	LLOYD’S REGISTER EMEA or US Equivalent
✔	QUALITY ASSURANCE ASSESSORS	SGS UK LTD SYSTEMS & SERVICES CERTIFICATION ISO 13485:2016

SYSTEM LIFE	20 Years
RECOMMENDED MAINTENANCE	Annual
SYSTEM RECERTIFICATION	10 Years or 4000 Cycles (whichever comes first)

PVHO MATERIALS	DESCRIPTION
Braid	Vectran™ Liquid Crystal Polymer Fibre
Bladder	Polyether Polyurethane coated Meta Aramid Fibre (Nomex™ or equivalent)
Protective Cover	Polyurethane Coated Polyester Woven Fabric
End Windows	Spherical Clear Acrylic Plastic in Aluminium Door Hatch
Metallic Components	6061-T6 Grade Aluminium

Operational Advantages

• Enables advanced in-field hyperbaric treatment with medical intervention capability
• Supports complex dive tables and mixed-gas recompression profiles
• Reduces reliance on fixed hyperbaric facilities
• Designed for extreme military and offshore environments
• Proven durability, including controlled depressurisation under ballistic impact conditions 

System Components

• Control Box (pressure and gas management)
• Chamber Monitoring System (environmental control)
• Duplex Communications System
• Patient Monitoring System (vital signs)
• CDRS digital treatment monitoring system
• Modular gas storage racks
• Treatment case (medical consumables)

Applications

• Military diving and special operations
• Offshore oil & gas diving support
• Naval and submarine operations
• Emergency and expeditionary medicine
• Hyperbaric treatment in remote or deployed environments

Logistics & Deployment

• Skid-mounted for rapid deployment
• Transportable via truck, aircraft, or vessel
• Modular breakdown for improved handling and storage
• Suitable for shipboard and confined-space installation