Wilco ASME certified manways are available in both dome and flat designs and in almost any size required. Extended neck lengths are also available. Flat models are available with or without davit assembly. Common models include:

20 in. Dome Manway - 6 in. Neck - 6 Cams
55 psi @ 250 deg. F / -50 deg. F @ 55 psi
29.5 Hg - Vacuum

30 in. Dome Manway - 6 in. Neck - 12 Cams
45 psi @ 250 deg. F / -50 deg. F @ 45 psi
29.5 Hg - Vacuum

40 in. Dome Manway - 6 in. Neck - 16 Cams
55 psi @ 250 deg. F / -50 deg. F @ 55 psi
29.5 Hg - Vacuum

30 in. Flat w/Davit Manway - 6 in. Neck - 24 stud
56 psi @ 250 deg.F / -20 deg. F @ 56 psi

40 in. Flat w/Davit Manway - 6 in. Neck - 24 stud
56 psi @ 250 deg.F / -20 deg. F @ 56 psi