Graph-Pro™ pressure vessels
Our hydrogen pressure vessel designs significantly reduce the overall weight of hydrogen storage. Hydrogen pressure vessels are intrinsically heavy: typically, 5kg of hydrogen requires a pressure vessel weighing 100kg. However, there is another problem: because the pressure vessels are heavy, they generally need either heavy attachments (for cars) or external frames (for trucks).
Graph-Pro™ addresses this problem by incorporating the pressure vessels into the chassis. This is done in one of two ways:
Fully Structural Pressure Vessels
The pressure vessels become a load-bearing part of the chassis. The strength of the pressure vessel substitutes for the strength of the chassis, enabling the chassis to be lightened. For example, in the Apricale, the pressure vessel forms part of the rear bulkhead, meaning the bulkhead itself can be made thinner and lighter.
Integrated Mounting System (IMS)
If an OEM already has a platform that needs to be converted to fuel-cell power, IMS pressure vessels are the answer. They have their own fixing points which attach directly to the chassis, meaning no separate attachments or frames.
For both fully structural pressure vessels and mild structural pressure vessels, the fundamental pressure vessel design is the same, while the method of attachment changes. Hence all pressure vessel sizes and ancillaries are applicable to both types.
Technical Specifications
Integrated Valve Head
Rather than having the valve head as a separate component outside the pressure vessel, the Viritech design fits it within the pressure vessel to enable better packaging.
20 bar pressure sensor
For use on the low-pressure side of the pressure vessel. Available with multiple thread types.
400 bar pressure sensor
For use on the high-pressure pressure vessel
Tri-Volt™
Energy Management Systems
Fuel Cell
Management and Controls
