Cryogenic Tank Safety Cap (Dewar Cap)
Engineered Venting • Maximum Safety • Reliable Design
A safety cap for cryogenic tanks (dewars) is a critical safety feature designed to vent pressure and prevent dangerous explosions. Unlike standard bottle caps that form a tight seal, cryogenic safety caps are loose-fitting by design, ensuring safe gas release as cryogenic liquids naturally vaporize.
Why It’s Essential
Cryogenic liquids, such as liquid nitrogen, are stored at extremely low temperatures and expand significantly when converting from liquid to gas. For example, liquid nitrogen expands nearly 700 times in volume upon evaporation. A sealed tank would result in dangerous pressure buildup, risking rupture or explosion.
The safety cap mitigates this risk by:
Allowing continuous and controlled venting.
Maintaining safe operating conditions.
Protecting both users and equipment from catastrophic failure.
Key Features
Loose-Fitting Design – Ensures pressure is safely vented rather than sealed in.
Built for Safety – Prevents catastrophic rupture due to cryogenic gas expansion.
Durable Construction – Reliable and long-lasting performance in extreme conditions.
Essential for All Dewars – A required component for the safe handling of cryogenic liquids.
About Us
Mastermed Equipment Trading LLC – leading supplier of dermatology equipments and comsumables in the UAE, trusted by hospitals, clinics, and healthcare facilities.