This large inspection port for (bio)diesel fuel, tanks has a flange-in-ring design which makes installing the port very easy in tanks constructed from most common materials.
With a Ø120 mm diameter the port meets the ISO21487 regulations for fuel tanks.
The counter flange and rubber seal are inserted in a Ø159 mm hole in the tank and then tightened by 4 bolts.
When compressed, the rubber seal expands sideways to lock the inspection port into the tank. Cleaning and inspecting the tank has never been this easy.
Specifications
Suitable for G.R.P., stainless steel and plastic tanks with different wall thicknesses