Metering Pump
   HOME



Metering Pump
A metering pump moves a precise volume of liquid in a specified time period providing an accurate volumetric flow rate. Delivery of fluids in precise adjustable flow rates is sometimes called metering. The term "metering pump" is based on the application or use rather than the exact kind of pump used, although a couple types of pumps are far more suitable than most other types of pumps. Although metering pumps can pump water, they are often used to pump chemicals, Solution (chemistry), solutions, or other liquids. Many metering pumps are rated to be able to pump into a high discharge pressure. They are typically made to meter at flow rates which are practically constant (when averaged over time) within a wide range of discharge (outlet) pressure. Manufacturers provide each of their models of metering pumps with a maximum discharge pressure rating against which each model is guaranteed to be able to pump against. An engineer, designer, or user should ensure that the pressure a ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


Volumetric Flow Rate
In physics and engineering, in particular fluid dynamics, the volumetric flow rate (also known as volume flow rate, or volume velocity) is the volume of fluid which passes per unit time; usually it is represented by the symbol (sometimes ). It contrasts with mass flow rate, which is the other main type of fluid flow rate. In most contexts a mention of ''rate of fluid flow'' is likely to refer to the volumetric rate. In hydrometry, the volumetric flow rate is known as ''discharge (hydrology), discharge''. Volumetric flow rate should not be confused with volumetric flux, as defined by Darcy's law and represented by the symbol , with units of m3/(m2·s), that is, m·s−1. The integration of a flux over an area gives the volumetric flow rate. The SI unit is Cubic metre per second, cubic metres per second (m3/s). Another unit used is standard cubic centimetres per minute (SCCM). In US customary units and imperial units, volumetric flow rate is often expressed as cubic foot, cub ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

High-performance Liquid Chromatography
High-performance liquid chromatography (HPLC), formerly referred to as high-pressure liquid chromatography, is a technique in analytical chemistry used to separate, identify, and quantify each component in a mixture. It relies on pumps to pass a pressurized liquid solvent containing the sample mixture through a column filled with a solid adsorption, adsorbent material. Each component in the sample interacts slightly differently with the adsorbent material, causing different flow rates for the different components and leading to the separation of the components as they flow out of the column. HPLC has been used for manufacturing (''e.g.'', during the production process of pharmaceutical and biological products), legal (''e.g.'', detecting performance enhancement drugs in urine), research (''e.g.'', separating the components of a complex biological sample, or of similar synthetic chemicals from each other), and medical (''e.g.'', detecting vitamin D levels in blood serum) purpo ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

Piping
Within industry, piping is a system of pipes used to convey fluid In physics, a fluid is a liquid, gas, or other material that continuously Deformation (physics), deforms (''flows'') under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are Matter, substances wh ...s (liquid A liquid is a nearly Compressibility, incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. As such, it is one of State of matter#Four fundamental states, the four fund ...s and gases) from one location to another. The engineering Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more specializ ... discipline of piping design A design is a plan or specification for the construction of an obje ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

Tubing (material)
A pipe is a tubular section or hollow Cylinder (geometry), cylinder, usually but not necessarily of circle, circular cross section (geometry), cross-section, used mainly to convey substances which can flow — Liquid, liquids and Gas, gases (fluids), Slurry, slurries, Powder, powders and masses of small solids. It can also be used for Structural engineering, structural applications; hollow pipe is far stiffer per unit weight than solid members. In common usage the words ''pipe'' and ''Tube (fluid conveyance), tube'' are usually interchangeable, but in industry and engineering, the terms are uniquely defined. Depending on the applicable standard to which it is manufactured, pipe is generally specified by a nominal diameter with a constant outside diameter (OD) and a schedule that defines the thickness. Tube is most often specified by the OD and wall thickness, but may be specified by any two of OD, inside diameter (ID), and wall thickness. Pipe is generally manufactu ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

Relief Valve
A relief valve or pressure relief valve (PRV) is a type of safety valve A safety valve is a valve that acts as a fail-safe. An example of safety valve is a pressure relief valve (PRV), which automatically releases a substance from a boiler, pressure vessel, or other system, when the pressure or temperature exceeds ... used to control or limit the pressure Pressure (symbol: ''p'' or ''P'') is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled ''gage'' pressure)The preferred spelling varies by country and e ... in a system; pressure might otherwise build up and create a process upset, instrument or equipment failure, or fire. The pressure is relieved by allowing the pressurized fluid to flow from an auxiliary passage out of the system. The relief valve is designed or set to open at a predetermined set pressure to protect pressure vessel A pressure vessel is a container designed ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

Valve
A valve is a device or Heart valve, natural object that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically Piping and plumbing fittings, fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. The word is derived from the Latin ''valva'', the moving part of a door, in turn from ''volvere'', to turn, roll. The simplest, and very ancient, valve is simply a freely hinged flap which swings down to obstruct fluid (gas or liquid) flow in one direction, but is pushed up by the flow itself when the flow is moving in the opposite direction. This is called a check valve, as it prevents or "checks" the flow in one direction. Modern control valves may regulate pressure or Fluid dynamics, flow downstream and operate on sophisticated Industrial automation, automatio ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

Peristaltic Pump
A peristaltic pump, also commonly known as a roller pump, is a type of positive displacement pump A pump is a device that moves fluids (liquids or gases), or sometimes Slurry, slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the metho ... used for pumping a variety of fluid In physics, a fluid is a liquid, gas, or other material that continuously Deformation (physics), deforms (''flows'') under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are Matter, substances wh ...s. The fluid is contained in a flexible tube fitted inside a circular pump casing. Most peristaltic pumps work through rotary motion, though linear peristaltic pumps have also been made. The rotor Rotor may refer to: Science and technology Engineering *Rotor (electric), the non-stationary part of an alternator or electric motor, operating with a stat ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

Hydraulic
Hydraulics (from Greek: Υδραυλική) is a technology and applied science using engineering Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more specializ ..., chemistry Chemistry is the scientific study of the properties and behavior of matter. It is a natural science that covers the elements that make up matter to the compounds made of atoms, molecules and ions: their composition, structure, properties ..., and other sciences involving the mechanical properties and use of liquid A liquid is a nearly Compressibility, incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. As such, it is one of State of matter#Four fundamental states, the four fund ...s. At a very basic level, hydraulics is the ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

Diaphragm Pump
A diaphragm pump (also known as a Membrane pump) is a pump#Positive-displacement pump, positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or Polytetrafluoroethylene, teflon diaphragm (mechanics), diaphragm and suitable valves on either side of the diaphragm (check valve, butterfly valves, flap valves, or any other form of shut-off valves) to pump a fluid. There are three main types of diaphragm pumps: * Those in which the diaphragm is sealed with one side in the fluid to be pumped, and the other in air or hydraulic fluid. The diaphragm is flexed, causing the volume of the pump chamber to increase and decrease. A pair of non-return check valves prevent reverse flow of the fluid. * Those employing volumetric positive displacement where the prime mover of the diaphragm is electro-mechanical, working through a crank or geared motor drive, or purely mechanical, such as with a lever or handle. This method flexes the diaphragm throu ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

Toxic
Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. Toxicity can refer to the effect on a whole organism, such as an animal, bacteria, bacterium, or plant, as well as the effect on a substructure of the organism, such as a cell (biology), cell (cytotoxicity) or an organ such as the liver (hepatotoxicity). By extension, the word may be metaphorically used to describe toxic effects on larger and more complex groups, such as the family unit or society at large. Sometimes the word is more or less synonymous with poison#Poisoning, poisoning in everyday usage. A central concept of toxicology is that the effects of a toxicant are Dose (biochemistry), dose-dependent; even water can lead to water intoxication when taken in too high a dose, whereas for even a very toxic substance such as snake venom there is a dose below which there is no detectable toxic effect. Toxicity is species-specific, making cross-species analysis p ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


Leak
A leak is a way (usually an opening) for fluid In physics, a fluid is a liquid, gas, or other material that continuously Deformation (physics), deforms (''flows'') under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are Matter, substances wh ... to escape a container or fluid In physics, a fluid is a liquid, gas, or other material that continuously Deformation (physics), deforms (''flows'') under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are Matter, substances wh ...-containing system, such as a tank A tank is an armoured fighting vehicle intended as a primary offensive weapon in front-line ground combat. Tank designs are a balance of heavy firepower, strong vehicle armour, armour, and good battlefield mobility (military), mobility prov ... or a ship's hull, through which the contents of the container can escape or outside matter can enter the container. Leak ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]  


picture info

Ruby
A ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, alongside amethyst, sapphire, emerald, and diamond. The word ''ruby'' comes from ''ruber'', Latin for red. The color of a ruby is due to the element chromium. Some gemstones that are popularly or historically called rubies, such as the Black Prince's Ruby in the British Imperial State Crown, are actually spinels. These were once known as "Balas rubies". The quality of a ruby is determined by its color, cut, and clarity, which, along with carat (mass), carat weight, affect its value. The brightest and most valuable shade of red, called blood-red or pigeon blood, commands a large premium over other rubies of similar quality. After color follows clarity: similar to diamonds, a clear stone ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Bing]   [Yahoo]   [DuckDuckGo]   [Baidu]