Clamp bolt manways are a low profile alternative to the yoke & bolt manway as well as a reasonably priced unit for vacuum applications. The standard assembly consists of a ring, pressed cover, clamps with bolts, and a gasket. Rings and covers are available in carbon steel or stainless steel.
Standard clamp bolt manway dimensions and ratings.
|Nom. Size (in.)||Cover Thickness (in.)||Pressure Rating (psi)||Weights (lbs.)|
|Carbon Steel||Stainless Steel||Carbon Steel|
0 corr. all.
|Stainless Steel up to 200F||Ring 3/4 X 3/1 X 3||Ring 3/4 X 4/1 X 4|
|11 X 15||5/16||5/16||300||250||47/56||56/68|
|11 X 15||1/2||1/2||600||382||68/77||77/89|
|12 X 16||3/8||3/8||300||250||53/63||62/74|
|12 X 16||1/2||1/2||600||382||74/85||85/97|
|14 X 18||3/8||3/8||300||300||74/85||85/99|
|14 X 18||1/2||1/2||600||600||101/112||112/126|
|18 X 24||1/2||1/2||200||200||-/169||-/188|