151780 ⎘
Covers or similar closure members for pressure vessels in general Pivoted closures
Sub-classes:Adjustable tamper-resistant locking mechanism for manhole cover
#2Apparatus to protect sealing surfaces of thief hatches
#3Apparatus to protect sealing surfaces of thief hatches
#4Compression limiting manway gasket
#5Melter
#6Closure for a vessel
#7Piston rod assembly of a hydraulic fluid pump
#8Tool-less closure