Pressure Relief Valves

Every time a cold room door opens and closes, the air pressure inside and outside changes. These sudden pressure differences can make the door hard to open, damage the gaskets and adversely affect the room’s insulation performance. This is exactly where pressure relief valves come in.

A pressure relief valve is a passage control system that automatically balances the pressure difference between the cold room and the outside environment, ensuring that the doors work properly and the air flow in the room remains stable. It balances the negative or positive pressure fluctuations that occur when the door is opened, helping to preserve indoor conditions and extending system life.

• Cold storage rooms (positive and negative temperatures)
• Blast freezing rooms
• Incubation and ripening rooms
• Closed-system logistics areas
• Laboratories and hygienic production rooms

• Doors Open Smoothly Provides user comfort by preventing negative pressure build-up.
• Longer Gasket Life Door gaskets are not damaged because there is no sudden pressure load.
• Increased Energy Efficiency The time the door is left open unnecessarily is reduced, preventing energy loss.
• Balanced Air Circulation Cold air inside is preserved and outside air entry is controlled.
• Compact and Durable Thanks to its simple installation, it provides trouble-free use for many years.

• A valve of suitable diameter should be selected according to the room volume and the inside–outside temperature difference.
• Heated valves should be preferred in freezer rooms.
• Mounting height and orientation should be planned so as not to obstruct the operation of the door.
• The valve’s functionality should be maintained with periodic checks and cleaning.

• Valve diameter and type selection specific to cold room systems
• Heated model option for freezer rooms
• Mounting accessories and technical support
• Mounting solutions integrated with the panel

In Conclusion

The pressure relief valve is a small component with a big impact, ensuring that cold room doors work smoothly and safely and contributing to energy savings and product safety. Don’t upset your cold chain balance – manage pressure wisely.

• Operating Principle One-way or two-way air passage with an automatic spring-loaded flap system
• Installation Location Mounted on the cold room panel, connecting inside and outside
• Operating Range Effective at ambient temperatures between 0 °C and −40 °C
• Body Material PVC, PP or stainless steel
• Flap Type One-way or two-way pressure balancing flaps
• Sealing Automatic closing system supported by a rubber gasket
• Optional Features Heated model (for freezer room applications)