Pressure changes either inside or
outside a low temperature cold room will cause large forces to
act on wall and roof panels.
Pressure decrease
occurs as the room is brought down to working temperature.
Panels can be deflected inwards and doors may be difficult if
not impossible to open.
Pressure increase
occurs as evaporator fans switch on after defrost or produce is
loaded. Panels can be deflected outwards and doors forced open.
The Loheat PRV75
Pressure Relief Valve equalises internal and external pressures
to reduce the possibility of these problems occurring. |
