Abstract: A pump with an outer housing defining an enclosure, an inlet for admitting fluid into the outer housing and an outlet for expelling fluid from the outer housing, a piston for selectively modulating a first fluid pressure, such that the first fluid pressure is associated with a location proximate the inlet, and a member that selectively isolates a second pressure associated with a location proximate the outlet from the first fluid pressure. The pump may also include a first chamber within the outer housing for receiving fluid admitted into the pump from an ambient environment and through an inlet to the pump, a second chamber within the outer housing for receiving fluid from the first chamber, and a piston that both (i) selectively controls the flow of fluid from the first chamber to the second chamber and (ii) selectively expels the fluid from the second chamber into the ambient environment.

Abstract: A pump assembly and a high-pressure cleaning apparatus, the pump assembly includes a motor assembly, a motor housing for receiving the motor assembly, a transmission assembly driven by the motor assembly, a pump, and a pipe assembly connecting the motor housing and the pump. Mutually independent heat dissipation portions are provided at two sides of the motor housing.

Abstract: A system includes a material sensor system having an inlet and an outlet. The inlet receives a flow of a material and the outlet outputs the flow of the material. The material sensor system includes an inner cavity having a surface, where the inner cavity receives the flow of the material. The material sensor system also includes a float system having one or more floats, where the one or more floats float within the material of the inner cavity. The material sensor system also includes a switch that sends one or more signals to a control valve system when the float system engages the surface of the inner cavity.

Abstract: A compressor and method for compressing a working medium, including moving a drive piston which is driven by way of a driving medium within a first cylinder between a first end position and a second end position; moving a high pressure piston which compresses the working medium within a second cylinder between a first end position and a second end position; arranging a high pressure seal for sealing the high pressure piston; arranging a magazine having a receptacle for the high pressure seal and at least one replacement high pressure seal in a first operating position, in which the high pressure piston is sealed by way of the high pressure seal; and transferring the magazine from the first operating position to a second operating position, in which the high pressure piston is sealed by way of the replacement high pressure seal.

Abstract: An electric immersion pump having a containment shell containing a wet section, an electromechanical section, and an electronic section, having a compartment inside which an assembly for the control and actuation of the electric pump is contained, wherein the control and actuation assembly is connected to a user interface, a wireless Near Field Communication (NFC), and an electronic management and control element.

Abstract: A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.

Abstract: A compressor includes a drive mechanism and a compression mechanism having a discharge passage and a plurality of members disposed to overlap. The discharge passage includes a muffling chamber, an inflow passage connected to an inflow end of the muffling chamber, and an outflow passage connected to an outflow end of the muffling chamber. The muffling chamber is formed across two or more of the plurality of members. The compression mechanism includes first and second cylinders, and a second closing member that covers an opening surface a of the first cylinder and an opening surface of the second cylinder. The muffling chamber includes an expansion chamber having a passage sectional area larger than the inflow and outflow passages. The expansion chamber is formed across the second closing member, and the first and second cylinders.

Abstract: A natural gas pumping system that includes six reciprocating compressor cylinders, the reciprocating pistons of the six compressors having cycles offset by 60 degrees one from another.

Abstract: A hydraulically operated compressor has a fixed piston and a fixed compression or outer cylinder. A drive or intermediate cylinder is located between the piston and outer cylinder. A compression chamber is formed between the drive cylinder and the outer cylinder. Drive fluid is pumped into and released from an interior chamber in the drive cylinder to reciprocate the drive cylinder. The drive fluid also provides cooling to the interior of the compressor.

Abstract: A blower unit can include an outer housing, an inlet subassembly, a fan subassembly, an outlet subassembly, and a grommet. The outer housing can have an aperture extend along a first axis between first and second ends. The inlet subassembly can be received in the first end of the aperture. The fan subassembly can be received in the aperture adjacent to the inlet subassembly and include at least one wire. The outlet subassembly can be received in the second end. The grommet can be positioned between at least part of the second end and the outlet subassembly. The at least one wire can extend through the grommet. The grommet can seal against the at least one wire. The grommet can seal between the outer housing and the outlet subassembly.

Abstract: A method for determining a current wear (w) of a hydrostatic pump, particularly of a radial piston pump, with a variable-speed drive, where the pump is connected to a fluid passage, in which a fluid is pumped by the pump to create a current actual volume flow in the fluid passage. A current actual volume flow (Qact) is determined, by measuring the volume flow in the fluid passage at a predetermined drive-vector, a computed volume flow (Qcomp) is determined, by a first computational method, at the predetermined drive-vector, and the current wear (w) of the pump is determined, by a second computational method, which relates the current actual volume flow (Qact) to the computed volume flow (Qcomp).

Abstract: An electrically operated displacement pump includes an electric motor having a stator and a rotor. The rotor is connected to the fluid displacement member to drive axial reciprocation of the fluid displacement member. A drive mechanism is disposed between and connected to each of the rotor and the fluid displacement member. The drive mechanism receives a rotational output from the rotor and provides a linear input to the fluid displacement member. A controller controls operation of the motor based on an operating state of the motor to control pumping by the displacement pump.

Abstract: A system for monitoring flow conditions of fluid flowing from a product container through a solenoid pump.

Abstract: A power generating unit including a hydraulic unit; an interface unit connected to the hydraulic unit, the interface unit being connectable to a stationary unit; a power flow shaft connected between the hydraulic unit and the interface unit for supply of a torque load therebetween; and at least one connecting element arranged between the hydraulic unit and the interface unit, the at least one connecting element being controllable between a first state in which a relative rotation between the hydraulic unit and the interface unit is allowed, and a second state in which a relative rotation between the hydraulic unit and the interface unit is prevented.

Abstract: A chemical delivery system connects to a chemical tank and includes a union connected to the tank outlet and providing an antirotation feature, in addition to threads, to prevent rotation of the assembly in response to asymmetric loads. A measuring tube alternately receives liquid from the tank and is isolated from the tank. While isolated from the tank, liquid is withdrawn from the tube by a pump under conditions allowing the pump to be calibrated. The assembly is cantilevered from the tank outlet and is of reduced length and weight producing a device which is not prone to overstress the tank outlet.

Abstract: A control arrangement for a variable displacement pump includes a pressure control unit and a separate mechanical control unit, each mounted on a housing of the variable displacement pump. The pressure control unit provides pressure control for the variable displacement pump and the mechanical control unit provides rotary feedback control for the variable displacement pump.

Abstract: A blower device and a vehicular air-conditioning device including a chamber for air flow so as to cool a motor, whereby water drops are prevented from reaching the motor with higher reliability. Included is a casing having an air intake port, an air discharge port, and a discharge flow path portion communicating between the air intake port and the air discharge port; a scroll fan provided in the casing to take in the air from the air intake port and generate an air flow to the air discharge port through the discharge flow path portion; a motor rotationally driving the scroll fan; and a motor cooling unit cooling the motor. The motor cooling unit includes a chamber for partial air flow from the discharge flow path portion and a cooling duct having an opening portion which opens into the chamber at one end and supplying air to the motor.

Abstract: A portable blowing device configured for being worn around a neck of a human body, includes two arms each defining an airflow channel therein; and fans received in the arms respectively. The arm includes an inner side wall close to the neck and an outer side wall connected to the inner side wall. The arm includes an air inlet and an air outlet in communication with the airflow channel respectively. The air inlet is arranged at the inner side wall and/or the outer side wall. The fan is configured to generate an airflow passing through the air inlet, the airflow channel and the air outlet in sequence.

Abstract: Disclosed is a compressor including a vibration attenuating member that fixes a driving assembly to be spaced apart from an inner circumferential face of a shell and reduces vibration or noise generated in the driving assembly.

Abstract: A complete bearing-sealed root vacuum pump system capable of promoting vacuum ability of a condenser of a power plant provides a complete bearing-sealed structure. All chambers are isolated effectively so that liquid cannot flow there between and thus not to destroy the root vacuum pump. Therefore, the lifetime of the root vacuum pump is prolonged. The heat exchangers are arranged between the root vacuum pumps and the front stage pump so as to return the condensed water. The condenser vacuum is improved and thus the power generation efficiency is promoted, and power consumption is lowered. As a result a large power plant can save several thousand tons of coals per year.