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DIAvent® – Pressure Equalization and Emergency Degassing for Batteries
Hermetically sealed housings of batteries require reliable pressure management solutions – both during normal operation and in critical emergency situations. DIAvent® pressure equalization elements from Freudenberg combine bi directional pressure equalization and emergency degassing in a single component, supporting safer and more robust battery system design. Download technical documents and detailed product information for the DIAvent® product family to support your development and design decisions.
Why DIAvent®?
- Combined pressure equalization and emergency degassing in one component
- Resealing after emergency degassing to increase system safety
- Robust laminated breathing element made of coated ePTFE
- Water tight and oil repellent, yet highly air permeable
- More robust than conventional burst vents or rupture discs made of porous PTFE film
- Compact design enabled by high functional performance
Benefits of DIAvent® maxFlow at a Glance:
- Adjustable opening pressure with best-in-class opening tolerances
- Immediate opening of a large venting cross-section
- Maximum venting rates
- Resealable when venting pressure drops
- Reliable sealing system
- Easy installation on the battery housing
Benefits of DIAvent® Highflow at a Glance:
- Designed for battery systems with higher energy densities
- Increased mass flow rate for fast emergency degassing
- Optimized for large gas volumes in critical scenarios
- Combines pressure equalization and emergency degassing
- Reclosing after emergency activation
Benefits of DIAvent® Mini at a Glance:
- Pressure management for small to mid‑scale battery applications
- Bi‑directional pressure equalization during normal operation
- Reclosing after emergency activation
- Compact design with robust Torx T40 mounting
Not designed for automotive applications
DIAvent® – the Safe and Reliable Solution
The DIAvent® product family provides robust pressure management solutions for battery housings during daily operation and critical emergency scenarios. By combining bi directional pressure equalization with controlled emergency degassing and reclosing capability, DIAvent® helps reduce risks associated with pressure build up, uncontrolled air ingress and secondary reactions. This contributes to increased safety for battery systems, surrounding components and people – including during handling and transportation of damaged or fire dormant battery systems.
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