Abstract: An attachment (3) for a vacuum gun (2), for introducing new coolant into a cooling system of a vehicle after spent coolant has been drained from the cooling system. The attachment (3) comprises: a body (4) having a first inlet (36) for air left in the cooling system of the vehicle after spent coolant has been drained from the cooling system; a second inlet (37) for the new coolant; an outlet (38); a passage (39) connecting the outlet (38) to each of the inlets (36, 37); and, a jumper valve (40) located within the passage (39). The jumper valve (40) is moveable between a first closed position and a second open position, and it is biased with a coil spring (41) to remain in the first position. Whilst a vacuum is applied to the attachment (3) by the vacuum gun (2), the jumper valve (40) is in the second position and air may be drawn from the cooling system to form a partial vacuum within the cooling system.

Abstract: An attachment (3) for a vacuum gun (2), for evacuating and containing a fluid from a reservoir of fluid, such as brake fluid from a brake system. The attachment (3) has a body (21, 25) with an inlet (22) for the fluid and an outlet (24) that may be sealingly attached to a front end of a gun (2). The attachment (3) also has a coupling (26), a container (27) which is releasably attachable to the coupling (26), a first passage (33, 34) extending between the inlet (22) and the container (27), a second passage (35, 36) extending between the container (27) and the outlet (24), and a tap (70) which may be moved to either close or open the said passages (33, 34, 35, 36). In use, the gun (2) generates a vacuum within the attachment (3) and when the tap (70) is in the open position, the fluid may be collected within the container (27). A float valve (83) within the second passage (35) ensures that the container (27) cannot overfill with fluid.

Abstract: A gun having a body with a barrel extending through it is disclosed. A nozzle is coupled to one end of the barrel and to which a hose may be connected. A valve is connected to an opposite end of the barrel and a sleeve with circumferentially space substantially longitudinally extending passages is present within the barrel and compressed air may be introduced into the barrel and cause to flow through the spaced passages such that when the valve is open the flow of compressed air causes fluid to flow through the barrel.

Abstract: A pressure testing device for attachment to an inlet opening of an object to be pressure tested. The device has a sealing head with a bladder. An inlet to the bladder allows it to be inflated and a passage extends through the bladder for pressurising the object. An adjustable coupling is mounted to the stem for attaching the device to the inlet opening and an adjustable guard is mounted to the stem and is movable into engagement against the inlet opening.