Single-Arm Outward-Opening Round Manway

An outward-opening round stainless steel manway featuring an arched overhead closure bracket, a central cover hinge lug, and a single swing-bolt handwheel. Listed in 304 or 316L across ten drawing sizes from 200 to 600.

Connection	Butt-weld round neck collar
Material options	304 or 316L frame, cover, and bracket; silicone gasket; 304 hardware with 304/ABS handwheel
Closure structure	Outward-opening cover with single arched bracket arm, central hinge lug, and 1 swing-bolt handwheel
Shape	Round
Size range	200 / 219 / 250 / 300 / 350 / 400 / 430 / 450 / 500 / 600 (drawing Size)

Size

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Overhead Bracket Arm and Single-Handwheel Latch

An arched closure bracket spans across the center of the solid round cover from a rear hinge support on the neck collar, connects to an upper hinge support at the center of the lid, and fastens at the opposite front hinge support with a single swing bolt and handwheel.

Parts List Materials and Elastomer Options

The 11-item parts list specifies 304 or 316L stainless steel for the cylindrical frame, cover, and overhead bracket, paired with a silicone perimeter gasket. The handwheel is offered in 304 or ABS, while the swing bolt, upper/front/back hinge supports, pin, and lock ring are 304 stainless steel. The series specification also notes EPDM, FKM, and NBR seal options.

Ten Drawing Sizes and Wall Thicknesses

Ten nominal sizes are tabulated—200, 219, 250, 300, 350, 400, 430, 450, 500, and 600—with matching outer diameters from 200 to 600 and a 100 collar height. Collar thickness t is 2.5 for sizes 200–300 and 3 for sizes 350–600, while cover thickness t1 is 2 for sizes 200–350 and 2.5 for sizes 400–600.

Installation Clearance and Selection Checks

Collar height H and thickness t can be customized on request. Before fabrication, confirm overhead swing clearance above the vessel top for the bracket and lid arc, and verify the required diameter, alloy grade, and handwheel material.