Elliptical Handhole & Manway Assemblies

Elliptical Handhole & Manhole AssembliesThe self-sealing yoke and bolt manway provides the most economical and reliable access to pressure vessels. Yokes are designed for the positioning and holding of the covers only. Gasket sealing is accomplished by the application of internal pressure.

When cover assemblies are ordered without rings, customers are requested to specify the bolt length required.

Handhole and manway covers are designed and fabricated in accordance with the ASME code. (See cover profile drawing) The size and pressure temperature rating are stamped on all covers where space permits. All sizes shown are in inches. The nominal size dimensions are the inside dimensions of the opening into which the covers will be installed.

Elliptical Handhole & Manhole RingsCovers are stocked in SA516 Grade 70 steel. They can also be supplied in stainless steel (grades 304, 304L, 316 and 316L). Our gasket stock includes red rubber, neoprene. Gaskets in other materials are available on request.

All covers are registered in Canada.

3-1/2 x 4-1/2Welded Stud/Radius800 psiStamped H34 x 6Single bolt1000 psiStamped H16 x 8Single bolt660 psi
11 x 15Double bolt300 psi
12 x 16Double bolt900 psi
14 x 18Double bolt600 psi
18 x 24Double bolt200 psi

Covers Size in Inches Type Max PSI rating
(depending on Design Temp.)
2-3/4 x 3-5/8 Welded Stud/Radius 1000 psi Stamped H2
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