CRH Heated Pressure Relief Port

The CRH-750 is a heated pressure relief vent operated by 3 flaps which open in either direction dependent on the airflow pressure from inside or outside of the cold room

In stock
Category: Pressure Relief Ports
SKU: CRH750H

CRH Heated Pressure Relief Port – 100mm – 150mm Panel

Internal & External Pressures.

Atmospheric pressure, defrosting of evaporators, loading of goods and extended opening of doors create WARMING of the air and hence OVER PRESSURE. This can cause violent opening of the doors or yielding of the walls.

Likewise COOLING DOWN of the air in the room will result in UNDER PRESSURE and possibly collapse the walls. E.g. a rise or fall of temperature by 1 degree creates a pressure of about 40kg/m2 for a 100m2 ceiling.

The CRH-750 is a heated pressure relief vent operated by 3 flaps which open in either direction dependent on the airflow pressure from inside or outside of the cold room. The heating element is a 33W/m self regulating heater cable 240W with .275 AMP draw. With a 3 core neutral, active & earth facility. Power termination ends are fitted for easy installation.

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