Abstract: A valve for use in a heating or cooling water circuit includes a housing that forms a feed line and a discharge line, and an adjusting unit that is formed separate from the housing and penetrates into the housing for adjusting a flow rate through the valve. The adjusting unit has a valve closing body which is operatively connected to a valve tappet in such a way that the valve closing body together with a valve seat body that in the intended operation is stationary in relation to the housing, forms a valve gap which is adjustable by axially moving the valve tappet. The valve is designed such that the valve gap in the intended operation, when the valve tappet is not actuated, is closed by closing forces and when the valve tappet is actuated in order to open the valve gap, these closing forces have to be overcome.

Abstract: The invention concerns a distribution valve for the use in the feed or return of a medium circuit, with a housing (1) forming the feed line or the return line, respectively, a branch line (2) branching off from the housing (1) and an adjusting unit (3) for adjustment of a flow of medium through the branch line (2), which adjusting unit is formed separately from the housing (1) and opposite to the branch line (2) is arranged at the housing (1) and protrudes the housing wall. The adjusting unit (3) comprises an adjusting spindle (4), the axial position of which with respect to a component (5) of the adjusting unit (3) which is connected to the housing (1) can be changed by twisting it relative to said component (5), thereby changing the flow rate. The valve is designed in such a manner that an axial movement of the adjusting spindle (4) relative to the component (5) in direction towards the branch line (2) effectuates an increase of the flow rate through the branch line (2).

Abstract: A valve for use in a heating or cooling water circuit includes a housing that forms a feed line and a discharge line, and an adjusting unit that is formed separate from the housing and penetrates into the housing for adjusting a flow rate through the valve. The adjusting unit has a valve closing body which is operatively connected to a valve tappet in such a way that the valve closing body together with a valve seat body that in the intended operation is stationary in relation to the housing, forms a valve gap which is adjustable by axially moving the valve tappet. The valve is designed such that the valve gap in the intended operation, when the valve tappet is not actuated, is closed by closing forces and when the valve tappet is actuated in order to open the valve gap, these closing forces have to be overcome.

Abstract: A valve for use in a fuel line of a motor vehicle, including a sealing seat, a valve body which closes the sealing seat and a spring device, which pre-tensions the valve body against the sealing seat. The side of the valve body facing the sealing seat has a contour for deflecting the volume flow over an angle of greater than 90° and the outer diameter of the contour is greater than the diameter of the sealing seat.

Abstract: A delivery device for delivering fuel out of a fuel tank (1) has a suction connection (13) of a fuel pump (3) connected to a mixing tube (11) of a sucking jet pump (6). The sucking jet pump (6) sucks fuel out of the fuel tank (1) via a foot valve (12). The mixing tube (11) has an overflow valve (17) that controls a connection to a swirl pot (2). This enables the fuel pump (3) to suck fuel out of the fuel tank (1) when the swirl pot (2) is empty.

Abstract: A fuel supply system for a motor vehicle has a sucking jet pump (6, 7) which is connected to a flow line (5). The valve (16, 17) reduces the cross-section of an opening (20) in a nozzle (14, 15) of the sucking jet pump (6, 7) with increasing pressure in the flow line (5). Hydraulic losses in supplying the sucking jet pump (6, 7) with fuel as a pump fluid are prevented and the conveying performance of the sucking jet pump (6, 7) is maintained, preferably, at a constant level.

Abstract: A delivery device for delivering fuel out of a fuel tank (1) has a suction connection (13) of a fuel pump (3) connected to a mixing tube (11) of a sucking jet pump (6). The sucking jet pump (6) sucks fuel out of the fuel tank (1) via a foot valve (12). The mixing tube (11) has an overflow valve (17) that controls a connection to a swirl pot (2). This enables the fuel pump (3) to suck fuel out of the fuel tank (1) when the swirl pot (2) is empty.

Abstract: A fuel supply system for a motor vehicle has a sucking jet pump (6, 7) which is connected to a flow line (5). The valve (16, 17) reduces the cross-section of an opening (20) in a nozzle (14, 15) of the sucking jet pump (6, 7) with increasing pressure in the flow line (5). Hydraulic losses in supplying the sucking jet pump (6, 7) with fuel as a pump fluid are prevented and the conveying performance of the sucking jet pump (6, 7) is maintained, preferably, at a constant level.

Abstract: The invention relates to a fuel feed unit (2) for a motor vehicle, comprising a volume flow reducing valve (13, 14) that is mounted in a pump fluid line (11, 12) leading to a suction jet pump (5, 6). Said volume flow reducing valve (13, 14) reduces the fuel volume flow supplied to the suction jet pump (5, 6) when the feed pressure of the fuel pump (4) increases, thereby avoiding unnecessary feed of fuel to the suction jet pump (5, 6).

Abstract: The invention concerns a valve (1) for use in a fuel line of a motor vehicle, comprising a sealing seat (7), a valve body (5) which closes the sealing seat (7) and a spring device (6, 16, 17), which pre-tensions the valve body (5) against the sealing seat (7). The side of the valve body (5) facing the sealing seat (7) has a contour (11) for deflecting the volume flow over an angle of greater than 90° and the outer diameter of the contour (11) is greater than the diameter of the sealing seat (7).

Abstract: The invention relates to a fuel feed unit (2) for a motor vehicle, comprising a volume flow reducing valve (13, 14) that is mounted in a pump fluid line (11, 12) leading to a suction jet pump (5, 6). Said volume flow reducing valve (13, 14) reduces the fuel volume flow supplied to the suction jet pump (5, 6) when the feed pressure of the fuel pump (4) increases, thereby avoiding unnecessary feed of fuel to the suction jet pump (5, 6).

Abstract: In an apparatus (12) for controlling a pressure in a fuel inflow line of a motor vehicle, a shutoff valve (20) and a pressure limiting valve (21) are arranged in a connection (19). The connection (19) is arranged between an inflow junction (16) which leads to the inflow line and an outflow junction (17) which is led into a fuel container. The pressure limiting valve (21) opens above a first pressure and throttles the flow of the fuel through the connection (19). The shutoff valve (20) closes above a second pressure, the second pressure being higher than the first pressure. This ensures that, when a fuel delivery unit is at a standstill, the pressure in the inflow line does not exceed the first pressure and that, during operation of the delivery unit, the pressure in the inflow line can rise above the second pressure and an internal combustion engine of the motor vehicle is supplied sufficiently with fuel.

Abstract: In an apparatus (12) for controlling a pressure in a fuel inflow line of a motor vehicle, a shutoff valve (20) and a pressure limiting valve (21) are arranged in a connection (19). The connection (19) is arranged between an inflow junction (16) which leads to the inflow line and an outflow junction (17) which is led into a fuel container. The pressure limiting valve (21) opens above a first pressure and throttles the flow of the fuel through the connection (19). The shutoff valve (20) closes above a second pressure, the second pressure being higher than the first pressure. This ensures that, when a fuel delivery unit is at a standstill, the pressure in the inflow line does not exceed the first pressure and that, during operation of the delivery unit, the pressure in the inflow line can rise above the second pressure and an internal combustion engine of the motor vehicle is supplied sufficiently with fuel.