View Full Version : over-under pressure relief valve

philip de moor
07-01-2004, 07:33 AM
I am looking for a high capacity air pressure equalisation valve for a freezer tunnel.
Nowhere I can find such a valve, has anybody experience with this?

07-01-2004, 03:57 PM
What capacity do you need? Why not mount more little ones?
Is much safer (in case of failure of one big valve)

We always use those of Fermod
(Vanderbeke - Kuurne 056-35.88.31)



philip de moor
07-01-2004, 04:30 PM
after calculation I need 14 smaller Fermod valves!

08-01-2004, 12:50 PM
Hi Philip:)
if this is a coldstore the fermod relief valves will be fine. But if you are blast freezing I would sugest making you own relief valves as the amount of these valves required would be just silly.
make up a heated frame and fit this to the freezer wall, with a rubber flap that can be sucked inwards, once the pressure is equalized the flap will self seal. Also I would advise starting the fans in stages to minimise the chance of pulling down the ceiling.
Kind Regards. Andy.:)