We offer a 30-day return policy on all items. Items must be in original condition with all packaging and documentation.

Standard shipping typically takes 2-4 business days.

You can reach our customer support team via email at javreliefports@gmail.com or through the contact form on our website. We typically respond within 24 hours.

A cold room pressure relief port is a device designed to equalise pressure differences between the inside and outside of a refrigerated room. As temperatures change or doors are opened and closed, pressure can rapidly increase or decrease. A pressure relief port allows controlled airflow in both directions to neutralise these pressure differences, helping protect insulated panels, door seals and refrigeration system performance.

The number of pressure relief ports required depends on the room type and internal volume.

Low Temperature Room:
1 Relief Port per 40m³ of internal room volume

Blast Chiller Room:
1 Relief Port per 20m³ of internal room volume

For larger rooms, additional relief ports should be installed based on the total internal room volume.

Cold rooms need pressure relief ports because temperature changes create pressure differentials that can place significant stress on insulated panels, doors and seals. Without adequate pressure equalisation, rooms can experience vacuum conditions, over-pressure, seal failures, ice buildup and reduced energy efficiency. A properly sized pressure relief port helps maintain structural integrity and consistent room operation.

Negative pressure occurs when air inside the room cools and contracts faster than replacement air can enter. This commonly happens after door openings or during rapid temperature pull-down cycles. The resulting vacuum can make doors difficult to open and place stress on wall panels and seals. Pressure relief ports are specifically designed to neutralise these pressure changes.

A cold room pressure relief port works by allowing controlled airflow whenever a pressure difference develops between the inside and outside of a refrigerated room. Most designs use lightweight multi-flap mechanisms that open in either direction. This bi-directional airflow helps neutralise both vacuum conditions and over-pressure situations while maintaining the integrity of the cold room.

Yes. Significant pressure differentials can place considerable stress on insulated cold room panels. Over time, this stress can contribute to panel movement, bowing, seal failure and, in extreme cases, structural damage. Pressure relief ports help minimise these loads by maintaining pressure equalisation throughout normal refrigeration operation.

The number of pressure relief ports required depends on room volume and application. As a general guide, JAV Industries recommends approximately one relief port per 403 cubic metres of internal room volume for low temperature rooms. Larger rooms or specialised applications may require multiple units depending on operating conditions and system design.

JAV standard models are designed for applications operating above -20°C, while JAV L models are designed for applications operating above -45°C and are recommended for blast chillers. Available sizes include 100mm, 150mm, 200mm and 250mm diameters. All models operate on 220V power and are designed specifically for refrigeration pressure equalisation.