The inspection port is located on one end of the tank. DO NOT FILL thru this fitting. A BAYCO normal vent is used to close this opening and is shipped separately. A plastic plug is inserted at our site and must be replaced with the BAYCO at the time of installation.
One in the primary tank, one in the secondary.
These are the ones with the BLACK HEADs.
In the primary, the normal vent can be an inserted vent stack OR a BAYCO type; it depends on what the "authority having jurisdiction" requires.
As standard, we supply the vent stack. It is shipped loose. A plastic plug is inserted until such time as the stack is installed at site. If you need the BAYCO type, please inform us at time of order.