A piston-type fuel pump for an internal combustion engine includes a pump housing, a piston, an annular counterplate, and a non-return outlet valve. The pump housing includes a stepped opening and a piston opening. The piston is guided in the piston opening. The counterplate is pressed into the stepped opening and includes a valve seat. The non-return valve includes a valve element and a guide element. The guide element guides the valve element, is arranged radially outside the valve element and in the stepped opening, and includes a guide section, a retention section, and a support section. The guide section guides the valve element, the retention section is connected to the guide section via a radially extending connecting section, and the support section supports a valve spring. The sections are arranged axially at different points such that the guide section is between the counterplate and the support section.

There is provided an airless paint spray pump wherein the pump is a double acting piston pump having an inlet communicating with a source of paint, a motor for driving the pump, a pressure controller for controlling the pressure of the pressurized paint delivered by the pump, and a filter for filtering the paint delivered by the pump. The pump includes features which increase the accessibility of the components thereof, prevent the incorrect installation of the seal packings in the pump cylinder, and allow the assembly of the piston in the pump cylinder properly aligned with the cylinder so as not to damage the seal packings therein.

There is provided an airless paint spray pump wherein the pump is a double acting piston pump having an inlet communicating with a source of paint, a motor for driving the pump, a pressure controller for controlling the pressure of the pressurized paint delivered by the pump, and a filter for filtering the paint delivered by the pump. The pump includes features which increase the accessibility of the components thereof, prevent the incorrect installation of the seal packings in the pump cylinder, and allow the assembly of the piston in the pump cylinder properly aligned with the cylinder so as not to damage the seal packings therein.

A diaphragm pump comprises a carrier part (1), a drive motor (2) which is arranged thereon and which has a drive shaft (3) which rotates about a main axis of rotation (HR), a pump head (4, 4) with a pump chamber (8, 8) which is delimited by a diaphragm (7, 7) driven in oscillation, and an inlet port (11) and outlet port (10), which are arranged on the carrier part (1) and which are each able to be alternately connected via a shuttle valve arrangement (12, 12) to the pump chamber (8, 8) in the sense of an intake stroke and exhaust stroke, wherein the pump head (4, 4) is mounted rotatably in the carrier part (1) and is connected to the drive shaft (3) in an orientation such that the direction of oscillation (SR) of the diaphragm (7, 7) is directed orthogonally with respect to the main axis of rotation (HR) of the drive shaft (3), there is provided for the diaphragm (7, 7) a drive transmission element (13, 13), which firstly is mounted on the pump head (4, 4) so as to be displaceable in the direction of oscillation (SR) of the diaphragm (7, 7) and is connected to the diaphragm (7, 7) in terms of drive kinematics by way of a coupling element (21, 21), and is guided in a bearing disk (17), which is mounted so as to be rotatable eccentrically with respect to the main axis of rotation (HR), so as to be displaceable orthogonally with respect to the direction of oscillation (SR) of the diaphragm (7, 7), such that, owing to the eccentricity-induced displacements of the drive transmission element (13, 13) relative to the pump head (4, 4) and to the bearing disk (17), the drive transmission element (13, 13) generates, by way of its coupling element (21,21), the oscillatory movement of the diaphragm (7, 7) in the pump chamber (8, 8) during the rotation of the pump head (4, 4), brought about by the drive shaft (3), and the rotational driving along of the drive transmission element (13, 13) by the pump head (4, 4), and, as a result of the rotation of the pump head (4, 4), a pump medium line (22) arranged therein is alternately connected to the inlet port (11) and the outlet port (10).

A pump having significantly minimized or no ullage for pumping material (fluid or aggregate).

A disclosure pertains to a reciprocating pump configured for pumping fillers or aggregates or cementitious material and the like.

A disclosure pertains to a reciprocating pump configured for pumping fillers or aggregates or cementitious material and the like.

A disclosure pertains to a reciprocating pump configured for pumping fillers or aggregates or cementitious material and the like.

The present disclosure relates to a modular fluid pump system for configuring a fluid pump in a selected one of first and second configurations. The system may have a first pump casing with a first diameter, and a second pump casing with a second diameter smaller than the first diameter. A tubular frame may be included along with a first float having a first diameter positioned over the tubular frame for sliding longitudinal movement along the tubular frame. The first pump casing may be used to configure the fluid pump in the first configuration, to thus provide a first degree of clearance between the first float and an inner surface of the first pump casing, or alternatively the second pump casing may be used to configure the fluid pump in the second configuration, which provides a second degree of clearance between the first float and an inner of the second pump casing.

A piston-type fuel pump for an internal combustion engine includes a pump housing, a piston, an annular counterplate, and a non-return outlet valve. The pump housing includes a stepped opening and a piston opening. The piston is guided in the piston opening. The counterplate is pressed into the stepped opening and includes a valve seat. The non-return valve includes a valve element and a guide element. The guide element guides the valve element, is arranged radially outside the valve element and in the stepped opening, and includes a guide section, a retention section, and a support section. The guide section guides the valve element, the retention section is connected to the guide section via a radially extending connecting section, and the support section supports a valve spring. The sections are arranged axially at different points such that the guide section is between the counterplate and the support section.