| Patients who have taken those drugs may have changes in their heart valves that cause leakiness and backflow of blood. |
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| Veins in the legs have valves which normally prevent any backflow of the blood on its way towards the heart. |
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| The lymphatic vessels, like veins, have one-way valves that prevent backflow. |
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| Incorrectly installed systems can waste water and care must be taken not to contaminate mains water supplies through backflow. |
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| Other problems would be backflow into the system or a rising groundwater table that would allow seepage into the collection system. |
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| If backflow occurs during blood sample aspiration or from a transfusion, there also could be contamination. |
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| Install a backflow valve to prevent sewer backup from coming into your home. |
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| Reduced pressure backflow preventers are more expensive, used mostly in commercial irrigation installations. |
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| Venous ulceration occurs when the valves inside the veins become incompetent, leading to backflow and congestion of venous blood. |
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| A backflow protection device will be in place to prevent potentially contaminated water from entering the public water system. |
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| To prevent backflow of blood, the heart is equipped with valves that permit the blood to flow in only one direction. |
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| While bringing euro cash into circulation, banks and retailers at the same time need to cope with the rapid backflow of legacy cash. |
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| The gas is carried from the intake side to the exhaust between the lobes of the rotors and the outer wall and compressed by the backflow. |
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| Consider adding backflow protection devices for basement showers, toilets, drains and sinks. |
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| Yet today's backflow is not really cause for rejoicing, as it only means that there are resources that have not been utilised. |
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| Faucets with vacuum or cooling line attachments will include backflow protection devices. |
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| There is a 3-inch or 4-inch diameter intake line that brings waste into the basin, a 2-inch-diameter discharge line with a check valve to prevent backflow, and a vent pipe. |
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| Some systems or parts of systems are poorly designed, and exhibit problems such as backflow and odours. |
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| In addition to SDNR valves, anti-syphon loops are commonly installed on this type of vessel to prevent the backflow of water in a piping system. |
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| Water quality problems can also be caused due to cross connections, backflow, and backsiphonage. |
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| Two pre-assembled versions are also available, complete with shut-off valves and different upstream backflow preventers, depending on the hazard level of the water inside the system. |
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| The low-frequency first heart sound is heard when the ventricles contract, causing a sudden backflow of blood that closes the valves and causes them to bulge back. |
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| The maximum possible ratio based on cylinder dimensions may not be achieved if the intake valve closes after the piston begins its compression stroke, as this would cause backflow of the combustible mixture from the cylinder. |
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| The backflow preventer is inserted to prevent the contaminated water of the closed heating circuit from flowing back into the domestic water supply network, in compliance with EN 1717 standard prescriptions. |
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| At the very moment the rotor tip clears the edge of the pre-inlet channel, the volume of the gas displaced is compressed by the backflow of the pressurized gas present in the conveying piping at the discharge socket. |
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| If a check valve is installed, even if the trap outlet piping is connected to a collection line, the condensate discharged from equipment in operation will not backflow into equipment that is out of service. |
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| The separator at the outlet collects condensate, avoids condensate backflow towards the pump, and reinforces the whisper-quiet operation of the pump. |
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| A backflow through the pump can be prevented by suitable non-reflux fittings as close to the pump as possible insofar as a non-return valve is not installed in the pump. |
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| The cash centres, which ensure the counting and sorting of cash, were under heavy pressure for several months, notably due to the quick backflow of legacy currency. |
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| In sections where there is pressure flow, the invert of any interceptor tank outlet must higher than the hydraulic head within the sewer just prior to the point of connection otherwise the liquid will backflow into the tank. |
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| By all indications the backflow of legacy cash is proceeding very quickly. |
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| Please note that if chemicals are added the hazard becomes severe and as per CSA B64.10 a device such as a Reduced Pressure Principle Type backflow preventer would be required. |
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| Condensation-induced water hammer occurs frequently in condensate return lines, but backflow plays no role in this type of water hammer so the installation of a check valve is not effective in this case. |
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| People of three union councils were affected by the backflow of Mirani Dam water in 2007 when the cyclone Yemyin hit the coast of Balochistan. |
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| Proton pump inhibitors, which work to stop the backflow of stomach acid, are being overprescribed, they said. |
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| The campaign to enforce the State requirements for backflow prevention devices may have costly consequences for many of the city's property owners. |
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| Backflow is an undesirable reversal of normal flow, created by back pressure or back syphonage within a potable water system. |
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