Type 4 Cylinders
Type 4 Cylinders
Type 4 cylinders utilize a non-metallic polymeric liner wrapped in composite fiber structural reinforcement, providing a high ratio between storage capacity and weight. They are suitable for applications requiring weight reduction, mechanical strength, and storage of compressed gases at high pressure.
- Non-metallic polymeric liner
- Composite fiber structural reinforcement
- Fully composite construction
- High strength-to-weight ratio
Features, ranges, materials, standards, and certifications vary by model and manufacturer. Confirm the requirements against the current datasheet and technical proposal.
Description
Type 4 cylinders utilize a non-metallic polymeric liner wrapped in composite fiber structural reinforcement, providing a high ratio between storage capacity and weight. They are suitable for applications requiring weight reduction, mechanical strength, and storage of compressed gases at high pressure.
Key Features
- Non-metallic polymeric liner
- Composite fiber structural reinforcement
- Fully composite construction
- High strength-to-weight ratio
- Protection against impact, abrasion, and installation stress
- Valve configuration according to application
- Integration capability with pressure relief devices
- Mounting using technically dimensioned supports
Recommended Applications
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Configurations & Mounting Accessories
Composite cylinders must be mounted to accommodate volumetric elastic expansion during pressurization. Prime provides certified mounting designs to prevent structural stress concentration.
- Elastomer-cushioned strap and neck-mount clamping systems.
- High-flow valves with integrated thermally activated pressure relief devices (TPRDs).
- High-pressure cascade manifold interconnect systems.
- Precision-machined custom mounting brackets to eliminate stress risers.
Operational Safety and Compliance
Type 4 cylinders are mission-critical pressure vessels. Periodic inspection and requalification protocols differ fundamentally from traditional steel cylinders.
- Strict prohibition of any mechanical modification, drilling, or abrasion on the composite fiber shell.
- Rigorous thermal operating limits (excessive heat exposure can degrade the epoxy resin matrix).
- Exclusive use of certified valves installed with factory-homologated torque values.
- Routine periodic visual inspection recommended to identify protective coating defects prior to fiber damage.
- Certifications (ISO 11439, ISO 11119-3, UN ECE R110) depend on approved OEM sourcing.
Caution: Valve thread selection and torque must strictly adhere to cylinder OEM specifications. Damage to polymer liner threads is irreversible.
Prime Products Applied Engineering Support
Prime Products operates not merely as a cylinder supplier, but as a full-scope high-pressure solutions integrator.
- Optimization of cylinder selection (Type 1 through Type 4) matched to customer OPEX targets.
- Sizing and engineering of valve manifolds, pressure regulators, and high-pressure piping.
- Autonomy modeling and dynamic flow calculations across pressure reduction systems.
- Chemical compatibility assessment between process gas, polymer liner, and valve seating materials.
Models and Technical Specifications
General Models and Technical Specifications
| Category | Liner material | Composite overwrap | Working Pressure (WP) | Capacity / Dimensions |
|---|---|---|---|---|
| Vehicular Storage and Clean Mobility (Natural Gas, H₂) | High-Density Polymer Liner (HDPE / PET) | Carbon Fiber + Glass Fiber in Epoxy Resin Matrix | 250 bar to 700 bar (subject to confirmation) | Custom-tailored to vehicle model and engineering project |
| Stationary Storage Modules and Transport Tube Trailers | High-Density Polymer Liner (HDPE / PET) | Carbon Fiber + Glass Fiber in Epoxy Resin Matrix | 250 bar to 300 bar (subject to confirmation) | Custom-configured per skid/rack assembly |
Datasheet and Documentation
Request the complete technical datasheet, specification sheet, or certification documentation for this product directly from our team.