Each Masport Manway incorporates a
one-piece, low-profile flanged dome
lid design to eliminate possible leaks
found in two-piece lid designs. The
cut-resistant nitrite gasket keeps
retaining seat. Durable ductile
iron wing nuts with captive wear
washers have a wide span to easily
hand tighten or loosen. A stepped
shoulder design on the wing nut
provides a positive lock into the lid
closure bracket for superior lid-toweld
collar [...]

also available: 6 wingnut style

also available: 6 wingnut style

also available: 6 wingnut style

also available: 6 wingnut style

also available: 6 wingnut style

also available: 6 wingnut style