A system and method are provided for in-line processes of blending butane into gasoline streams, and for blending butane into a gasoline stream at any point along a petroleum pipeline. The invention additionally provides a method for measuring the vapor pressure and vapor to liquid ratio of the gasoline, both upstream and downstream of the blending operation, as well as the sulfur content of the butane entering the blending operation. The blending operation can be controlled to ensure that the blended gasoline meets EPA requirements for vapor pressure and sulfur content of gasoline. The invention further provides a method for accessing and monitoring the operation off-site.

A medical endoscope is an instrument having an elongate, tubular shaft. The instrument is commonly provided with a flushing device. The flushing liquid can be guided through corresponding separate liquid channels. In order to be able to control the flow of the liquid, the liquid channels have a stopcock. The stopcocks here are of complex construction, and for this reason both the production thereof and the cleaning thereof are complicated. The invention includes a stopcock and also a housing and a method for producing the housing, by way of which the production and the cleaning of the housing are simplified. This is achieved in that a housing and at least one spring element for form-fitting fixing of a plug in a position in the interior space of the housing are manufactured integrally from a single part, that is to say in one part.

Disclosed are a GM type cryogenic refrigerator rotary valve and a preparation method therefor. The GM type cryogenic refrigerator rotary valve comprises an aluminum alloy rotating valve and an alumina ceramic membrane. A valve body of the aluminum alloy rotating valve is provided with a first surface for arranging a working boss and a second surface opposite to the first surface; and a high-pressure hole and a low-pressure groove are both provided in the working boss, and a vent hole is provided in the first surface; the high-pressure hole and the vent hole both penetrate the valve body, and an air chamber is formed on the second surface. The alumina ceramic membrane is plated on surface of the aluminum alloy rotating valve. The preparation method comprises: plating an alumina ceramic membrane on surface of an aluminum alloy rotating valve by means of a micro-arc oxidation process.

The present invention provides a cartridge assembly for a faucet. The cartridge assembly permits flows from a first flow source and a second flow source to flow through the cartridge assembly and to be regulated through the faucet without permitting flows from the two sources to flow simultaneously through the cartridge assembly.

Valve cartridges for a faucet are described herein. The valve cartridge has a body with a longitudinal passage, and a side opening. The cartridge has a spindle with a lower end portion in rotatable relationship with the body's interior surface, and an upper outwardly extending end portion. Included is a movable disk with a surface that contacts and interacts with the lower end portion of the spindle, an arcuate side wall portion and an inwardly extending side wall portion with a fluid receiving area that allows for fluid flow out of the body side opening. A stationary disk with a through opening allows passage of fluid from a body inlet through the side opening when the opening in the disk is aligned with the fluid receiving area. A sealing ring, which mates with the body, is provided to stabilize the stationary and movable disks within the body passage.

A system and method are provided for in-line processes of blending butane into gasoline streams, and for blending butane into a gasoline stream at any point along a petroleum pipeline. The invention additionally provides a method for measuring the vapor pressure and vapor to liquid ratio of the gasoline, both upstream and downstream of the blending operation, as well as the sulfur content of the butane entering the blending operation. The blending operation can be controlled to ensure that the blended gasoline meets EPA requirements for vapor pressure and sulfur content of gasoline. The invention further provides a method for accessing and monitoring the operation off-site.

A pull-out faucet contains: a hollow body, a control valve assembly, a water supply pipe set, a water hose, and a spray head. The hollow body has a longitudinal chamber, an accommodation groove, and a first orifice. The control valve assembly includes: a right-angle valve block having multiple inlets, an outlet, and multiple apertures. A positioning element is configured to connect the right-angle valve block so as to accommodate a part of the right-angle valve block in the accommodation groove, a mixing valve is configured to communicate with the multiple apertures, a first cap is configured to position the mixing valve in the accommodation groove, and an operation lever is configured to turn on/off and to control the mixing valve.

Provided are a three-way valve for flow rate control and a temperature control device using the three-way valve for flow rate control. The three-way valve for flow rate control is capable of controlling a mixture ratio between two kinds of fluids with higher accuracy, as compared to a three-way valve including an inflow port which allows inflow of a high-temperature heat-medium circulating liquid, an inflow port which allows inflow of a low-temperature heat-medium circulating liquid, an outflow port which allows outflow of a constant-temperature heat-medium circulating liquid, and a control valve configured to control the flow rate ratio between the high-temperature heat-medium circulating liquid and the low-temperature heat-medium circulating liquid. The three-way valve for flow rate control includes: a valve main body including a valve seat, the valve seat having a columnar space and having a first valve port, which allows inflow of a first fluid and has a rectangular cross section, and a second valve port, which allows inflow of a second fluid and has a rectangular cross section; a valve body being provided in a freely rotatable manner in the valve seat of the valve main body so as to simultaneously switch the first valve port from an closed state to an opened state and switch the second valve port from an opened state to a closed state, the valve body being formed into a half-cylindrical shape having a predetermined central angle and being formed into a curved-surface shape at each of both end surfaces of the valve body in a circumferential direction; and drive means for driving the valve body to rotate.

A precision ceramics control valve includes a valve housing, a rotary base mounted in the valve housing, a slide mounted in the valve housing and located under the rotary base, a valve lever pivotally mounted in the rotary base and having an upper end protruding from the valve housing and a second end provided with a drive portion connected with the slide, a movable valve plate mounted in the valve housing and located under the slide, a fixed valve plate mounted in the valve housing and located under the movable valve plate, a valve seat mounted on a lower end of the valve housing to stop the fixed valve plate, the movable valve plate, the slide and the rotary base, and a temperature limiting device mounted in the valve seat.

A precision ceramics control balance valve includes a valve housing, a rotary base mounted in the valve housing, a slide mounted in the valve housing and located under the rotary base, a valve lever pivotally mounted in the rotary base and having an upper end protruding from the valve housing and a second end provided with a drive portion connected with the slide, a movable valve plate mounted in the valve housing and located under the slide, a fixed valve plate mounted in the valve housing and located under the movable valve plate, a valve seat mounted on the valve housing to stop the fixed valve plate, the movable valve plate, the slide and the rotary base, a temperature limiting device mounted in the valve seat, a pedestal connected with the valve seat, and a balance unit mounted in the pedestal.