The present invention relates to a container for holding bulk material, having a closable inlet for the bulk material in the upper closure of the container, a cross-sectional geometry narrowing in the outlet direction for the bulk material, an outlet tube for the bulk material arranged subsequently in the outlet direction, a first reversible mechanical closure device (A), which is arranged in the transition region from the container body to the outlet tube or in the outlet tube itself and, by opening, releases the bulk material from the interior of the container, and a second closure device (B) which reversibly closes the mouth of the outlet tube, the second closure device being a cover which is pressed flush onto the mouth of the outlet tube by means of a closure device, there being a seal which seals the outlet tube in a gas- and liquid-tight fashion from the external environment at least on the contact surface of the cover with the mouth degree of the outlet tube, wherein the cover is screwed onto or is pressed with a clamping ring or a bayonet closure onto the mouth of the outlet tube.

A container with improved sealing, for improved security in the event of loading, transporting and/or unloading submicron particles, in particular nanopowder/nanoparticles, includes a connector for injecting liquid and/or gas. Such a container can also contain at least one inflatable seal (40) valve (3; 4). The container is provided with elements for changing the physical state of the material by heating, mixing or ultrasound bombardment. A method for using the container and an inflatable seal valve are also described.

A liner discharge structure, and associated liner and container system are disclosed. The liner discharge structure includes: a collar fabricated from a liner material, wherein the collar encapsulates an O-ring in the liner material; a substantially rigid section having an opening, wherein the substantially rigid section is fabricated from the liner material; and a neck fabricated from the liner material, wherein the neck provides a passageway extending between the opening in the substantially rigid section and the collar; wherein the liner material used to fabricate the substantially rigid section has a cross-sectional thickness greater than the liner material used to fabricate the neck.

A liner discharge structure, and associated liner and container system are disclosed. The liner discharge structure includes: a collar fabricated from a liner material, wherein the collar encapsulates an O-ring in the liner material; a substantially rigid section having an opening, wherein the substantially rigid section is fabricated from the liner material; and a neck fabricated from the liner material, wherein the neck provides a passageway extending between the opening in the substantially rigid section and the collar; wherein the liner material used to fabricate the substantially rigid section has a cross-sectional thickness greater than the liner material used to fabricate the neck.

Consistent with disclosed embodiments, a stackable endcap of a chamber for holding and discharging stormwater may be provided. The stackable endcap may include an endcap body having a wall with a convex outer surface and a concave inner surface, the concave inner surface of the wall defining an interior volume of the stackable endcap; a substantially planar foot extending from a lower edge of the endcap body; and a protruding inner rim running along an inner edge of the endcap body. The stackable endcap may be configured to be stacked with at least one additional endcap such that at least one of the foot or the inner rim of the stackable endcap contacts the additional endcap while the wall of the endcap body is spaced apart from a wall of the additional endcap.