Abstract: The present invention relates to cleaning compositions, in particular to cleaning compositions for use in heating, ventilation and air-conditioning (HVAC) installations. We describe an acidic cleaning composition concentrate comprising: at least one acid having a pKa1 of 4 or less, wherein the at least one acid is at least one organic acid and/or non-oxidising mineral acid; a rheology modifier; and a polar protic solvent.

Abstract: A pulsation damper (100) for a condensate pump comprising a body (105) having a fluid inlet (115), a fluid outlet (125), an inner wall portion (107) and an outer wall portion (108), wherein the inner (107) and outer (108) wall portions define an inner fluid region (160) and an outer fluid region (165), wherein the inner fluid region (160) is in fluid communication with the outer fluid region (165), wherein a fluid flow path is formed from the fluid inlet (115) to the fluid outlet (125) via the inner fluid region (160), wherein the outer fluid region (165) is in fluid communication with an air inlet (130) and configured to maintain an air pocket, and wherein the air pocket is configured to dissipate pulsations within liquid entering the fluid inlet (115) prior to being discharged from the fluid outlet (125).

Abstract: An apparatus for the brewing of a beverage by transmission of an aqueous fluid through a sachet (4,16,39) containing a beverage brewing ingredient, the apparatus comprising: one or more injectors (14,63) to inject the acqueous fluid into the sachet (4, 16,39) during the brewing; and a clamp for the sachet, the clamp comprising one or more members (1,2,12,13,30,31,61) that are movable to open and close the clamp, the members having inner surfaces which in a closed position of the clamp define a cavity adapted to substantially enclose and support the sachet (4, 16, 39) during the brewing and further adapted to define a beverage exit pathway in a lower part of the cavity, and wherein the inner surface of a least one clamp member comprises at least one deformable region (3, 30,43) mounted on a support that is movable while the clamp is in the closed position, whereby the shape of the cavity or of the exit pathway can be changed while the clamp is in the closed position to provide a desired brewing configuration o