I think that there are two type blast valve block type and diafragm type. you can find them in Andair AG products.
Do you know that is there any other type?
In order to protect a blast proof building, the blast or explosion protection valve is used in the inlet or outlet duct. I need the type of it and the manufacturers.
Thank you for your help in advance.
How can we pressurize a space? for example I should to remain the pressure of a clean space in 50 Pa, I don't know that I should add this figure to the pressure of supply fan or I should balance the inlet and outlet cfm to achieve it.
