Single-Crossbar Oval Manway with Side Handwheel

An oval stainless steel tank manway featuring a weld-on oval neck collar, a single longitudinal crossbar arm pinned to the center of the cover, and a side clamping handwheel. Listed in SS304 or SS316L across nominal sizes from 8" to 24" (200–600 mm).

Connection	Butt-weld oval neck collar
Material options	SS304 or SS316L; silicone, EPDM, Viton, or NBR seal
Closure structure	Oval cover with single longitudinal crossbar arm, central pivot lug, and 1 side handwheel (illustrated); 4–6 handles in table
Shape	Oval
Size range	8"–24" (200–600 mm)

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Longitudinal Crossbar Arm and Side Handwheel

The assembly features a plain oval stainless steel cover retained by a single crossbar arm running along the major axis. One end of the bar is pinned to a side hinge lug on the oval neck collar, the center is pinned to a circular boss on the lid, and the opposite end tightens with a single lobed metal handwheel.

Oval Welding Collar and Listed Dimensions

The oval collar welds into a matching opening in the tank wall or head. The specification schedule lists a nominal size range of 8" to 24" (200–600 mm), a 100 mm collar height, a 3 mm wall thickness, and an internal surface roughness of Ra ≤ 0.8 µm.

Stainless Steel Grades and Seal Elastomers

Body construction is offered in SS304 (or 304L in page notes) and SS316L stainless steel. Listed gasket materials in the series specification include silicone, EPDM (-10 °C to +120 °C), Viton, and NBR, with natural rubber and FEP/PFA-encapsulated options also mentioned in the series overview.

Configuration and Dimension Checks

Because the series schedule reuses a generic series template listing 'Oval Inward Manway' and '4–6 pieces' handle count while the photograph shows an outward-seating rim cover with a single crossbar and one handwheel, confirm the opening direction, major×minor oval axes, and collar thickness before ordering.

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