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  • How a Circulating Pump Works
    How a Circulating Pump Works

    2017-04-07 17:11:21

    A circulating pump works by pumping or circulating liquids, gases or slurries in a loop or closed circuit. Their most common application is circulating water in a hydronic cooling or heating system.  Since the materials that they pump move around in closed circuits, they do not expend lot of energy. For example, when water is initially pumped upwards, it circulates around a system and eventually returns to its original position. From this point, a pump only needs enough power to counteract the drag or inertia in pipes to propel the water forward efficiently. This process is repeated over and over again. Since they require little energy to function, circulating pumps designed for homes are small enough to fit alongside plumbing systems. Pump Structure Circulating pumps for home use are typically compact electrically powered centrifugal pumps. In general, their sole purpose is to produce hot water on demand. Without them, users will have to wait for some time for water to heat each time they turn on dedicated taps. The three main components of a circulating pump are: Support bearings Pump impeller Motor rotor An electric motor rotor powers the impeller, which then thrusts the water forward or upward. An impeller is like a turbine in that it's a wheel with a series of angled blades. The impeller spins extremely fast, pushing water out and compressing it. The motor is sealed in a waterproof casing and is connected to the impeller. While circulating pumps are small enough to be mounted alongside plumbing systems, industrial type pumps have large designs and motors are usually fixed on separate locations away from the piping system. Hot Water Recycling One of the most common purposes of home use circulating pumps is to eliminate the wait for water to heat once a tap is turned on. In a typical hot water system, hot water is produced by the heater and flows through the pipes and then to the taps. Once the taps are turned off, the hot water in the pipes cools off. The heater system will only heat water once a tap is turned on again, which would require some time and cause water wastage. With a circulating pump, the wait for water to heat is eliminated and a steady supply of hot water is ensured all the time. Energy consumption is minimal and little water is wasted. They are also ideal for areas where water is in limited supply. Home use pumps are typically made of bronze to prevent corrosion, since oxygenated potable water flows through them constantly. Solar Water Heating Another popular and relatively new application for circulating pumps is in solar water heating systems. In this set-up, water is pumped to the solar collector, where it will be heated. That water then moves its way to a water tank, where heat is passed on to the water. The pump will again send cooler water back to the solar collector for heating.

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  • How a Magnetic Drive Pump Works
    How a Magnetic Drive Pump Works

    2017-03-30 15:28:08

    A magnetic drive pump is a pump that is powered through the use of the science of magnetism rather than electricity from an outside source. Magnetic drive pumps are energy efficient and require no seals or lubricants for operation. Magnetic drive pumps circulate a variety of fluids including acids, water and oils. Because there is no mechanical seal on a magnetic drive pump, the chance of hazardous chemical leaks or the pump overheating due to an obstruction is eliminated. The general characteristics of a magnetic drive pump include a rotating impeller located in an enclosed housing powered by a rotating magnetic field produced by individual magnets. The rotation of the impeller produces a force that drives liquid through and outside of the pump's housing. The main purpose of the pump is to maintain energy and motion in a fluid. This helps keep water or other liquids from going stagnant in a pond or tank. In a magnetic drive pump, the impeller and motor have magnets attached to them. Permanent magnets are attached to the pump's drive assembly. The drive magnet, the magnet responsible for driving the inner rotor, is attached on a second shaft operated by the motor. When the motor turns on, it spins its magnet. The magnetic force from the motor's magnet causes the magnet on the impeller to spin and rotate the impeller. A magnetic drive pump is a centrifugal pump, meaning that the liquid pumped through the system exits at a different point than where it's sucked into the pump. When liquid enters the pump, it is thrown off the impeller and into a discharge chamber. The rotation of the impeller causes the liquid to increase in energy, increasing the amount of pressure in which the liquid discharges from the pump. This increase in pressure is what keeps the fluid moving. See more STARFLO PUMP through

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  • Why Your Self-Priming Pump Can Not Prime ?
    Why Your Self-Priming Pump Can Not Prime ?

    2017-03-30 15:28:37

    Below, our @STARFLO  engineer gives us some reasons, hope can help you when you meet in the future. 1.AIR LEAK IN SUCTION LINE 2. DEBRIS IN THE IMPELLER 3. PUMP IS AIR BOUND If there is no air release line, air cannot be vented to the atmosphere, and instead collects on the discharge side. Valve on the air release line is closed, and the valve on the discharge line is closed, again, giving no place for the air to go and get out of the pump. If there is excessive clearance between the impeller and the wear plate, the pump has a difficult time creating a low pressure area. This is typically caused by wear, but could also be due to improper reassembly. During the priming process, as discussed above, fluid is recirculated through the volute casing. If the recirculation port becomes plugged, the eye of the impeller is unable to create an area of low pressure in which to pull liquid up the suction line. If you’ve undersized the pump for the suction line, it will not be able to create the low pressure area it needs to prime. It’s important to understand the suction lift requirements before selecting a pump for the application. Hope above can solve the problem you met .

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  • Don’t Buy a 12v RV Water Pump Until You Read This
    Don’t Buy a 12v RV Water Pump Until You Read This

    2017-03-30 15:29:03

    Water is the essence of life on earth — and also of life on the road. Unless you’re planning on packing case after case of expensive bottled water, this means you’ll need a water pump in your RV when you set off on your next trek. Thankfully, most RVs come with their own built-in pump. If, for whatever reason, you’re looking to buy a new water pump, the most common type of pump you’ll see, no matter the brand, is the 12V RV water pump. A quick note: before buying a new water pump, be sure that your old one is, in fact, beyond fixing. Trying troubleshooting using this helpful guide to water pump repairs. While there are water pumps powered through sources other than electricity, including solar and fossil fuel-powered pumps, electric ones are far more common and generally easier to maintain, specifically while traveling. 12V water pump RV models are the standard operating motors for RV use. These are not to be confused with a 110V water pump or 120V RV water pump, as these models are generally made for other purposes. They don’t pump water with the same pressure as larger ones made for installation in residential homes, but so long as they’re in working order, they get the job done and then some. See more water pump through

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