A vial.
A food steamer or steam cooker is a kitchen appliance used to prepare various foods in a sealed vessel that limits the escape of air or liquids below a preset pressure.
vial
Autoclave
r67
If the vacuum pump is on, the water will continue to boil. If the vacuum pump is off as the vessel is sealed, the boiling will stop at a point of equilibrium.
I guess it depends on whether it's sealed or not. If it's open to the atmosphere how can it be under pressure ? If it's sealed it could be put under (positive or negative) pressure so would be, by definition, a pressure vessel IMHO.
Liquids have a definite measurable volume but no definite shape. They assume the shape of whatever vessel the liquid is poured into.
A sealed vessel is used to conduct chemical reactions under controlled conditions. It helps to prevent contamination, regulate temperature and pressure, and maintain a specific environment that is necessary for the reaction to occur efficiently.
an obs. form of began, imp. & p. p. of Begin, sometimes used in old poetry. [See Gan.], A drinking cup; a vessel for holding liquids., A vessel or case of tinned iron or of sheet metal, of various forms, but usually cylindrical; as, a can of tomatoes; an oil can; a milk can., To preserve by putting in sealed cans, To know; to understand., To be able to do; to have power or influence., To be able; -- followed by an infinitive without to; as, I can go, but do not wish to.
Beakers hold solids or liquids that will not release gases when reacted or are unlikely to splatter if stirred or heated.
Pumps consist basically of pressure vessels and equipments for supplying compressed air.Concrete is delivered in to the pressure vessel and the vessel sealed tightly.Compressed air is then supplied to the top of the vessel which pushes the concrete out through a pipe connected at the bottom.