Giving you the ability to vent one bung and pump out of or into the other, this new lid has two NPT bung threads with a white EPDM gasket.
Related products
Yellow 2" fine thread vented plug with 3/4" reducer
FDA Female DIN 60mm to Male NPS
7″ Bonar Lid with Santoprene gasket
Hoover Cylinder Valve , NPS outlet with foil & cap. (Mauser Collar)
Mauser Cylinder Valve 2" NPT
6″ ACO orange Lid w/Viton gasket and tie-down
Mauser® Polyethylene Fill Cap Plain
Schūtz 6″ Butterfly valve