The forged brass valve body has a
full port 7/16" drain orifice. This large orifice virtually
eliminates clogging by rust, scale, or other air system debris and
can discharge more than two gallons of condensate per drain opening
at 100 psig. It is recommended the use of a strainer in front of
any diaphragm valve. The valve does have a large orifice, but the
diaphragm needs to be protected.
Product Dimensions

Diaphragm
This is a diaphragm and its function
is to lift up to expose a large orifice. If the bleed orifice in
the diaphragm clogs then the diaphragm will not lift up, the valve
is deemed blocked, and stays closed.
