What is a block valve. Do they include ball valves and globe valves?
100474
Any type of valve could be a block valve.  "Block" refers to the function of the valve, Ball, globe, gate valves all refer to the construction of the valve and the mechanism used for seating the valve.
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are we talking engine parts like block, cam, head, ect....if so try hear.  the second one goes more in depth
1151351
the valve is a presta-valve.  you can find a small hand pump or a larger two cylinder pump at just about any bike shop
790328
A damper restricts the flow, and can be adjusted to let more through or less through.\n\nA valve will be opened or closed.\n\nThink of it in the same fashion as in an air conditioning system
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C - Open\nD - 1\nE - Open\nF - 1\nG - Open\nA - 12 or 2\nB - 2\nC - Open\n\n\nOpen = No Valves\n1 - First Valve\n2 - Second Valve
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Incorrect valve clearances can cause valve to piston interference, cause excess cam and tappet wear and broken valve train components.  Incorrect timing can cause drive-ability issues, spark knock, or even burnt valves rough idle or a no start condition.
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Check the PCV valve and the hose going to it to make sure they are not plugged. If good, there is probably too much "blowby"\nmeaning the rings are shot.
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A long skinny cylinder is the preferred shape for high pressures.  But if you have a cylinder and a sphere with the same diameter and wall thickness, the sphere will have a slightly smaller hoop stress because theoretically there is no "hoop" in a sphere since the diameter is never a constant over any width of cross section.
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I have a drawing that shows the various types of shell and tube exchangers. I believe their functions are self evident if you see the cross sectins.\n\nSend me you email address and I'll send the drawing.
400030
Not sure this helps....there are other pages at this Portland Cement Assn site.  Browse around this site.\n\nhttp://www.cement.org/countonconcrete/Wall%20Systems%20Backgrounder.pdf
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I'm guessing by clay blocks you mean brick masonry fired in a kiln.  They are manufactured with holes in them but that is usually to reduce weight; however, I have seen arch lintels use the holes for reinforcing.\n\nToday's buildings usually use hollow concrete masonry (cinder blocks).  In terms of horizontal reinforcing, these types of blocks are manufactured in what is known as a bond beam.  This allows for horizontal bars to be set in a u-shaped profile which is then grouted.\n\nNot sure if that helps, maybe be more specific?
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Dr. Jeorge valvus in the year 1872, when they had to construct an irrigation system for a sugar can plantation and in the process this man invented the valve.\n\ngood luck.
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I am an engineer providing mechanical planning for various industrial/manufacturing plants in the Kansas City area.  The practice of controlling temperature through valve adjustment is called throttling.  While throttling can be achieved using a butterfly valve, a globe valve is the standard application.  A ball valve should not be used for throttling.
190822
Checking the barrel for obstructions?
45004
A bicuspid heart valve is a heart valve that has two leaflets.  Some heart valve are normally this way (The mitral valve, which is located between the left atrium and the left ventricle) while some are a congenital abnormality (aortic valve, which normally has three leaflets)
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At times it is necessary for a process engineer to choose between a pneumatically or electrically actuated valve for a system. There are advantages to both styles, and it is valuable to have data available to make the best choice. \n\nCompatibility (Power Source) \n\nFirst and foremost in the selection of an actuator type (pneumatic or electric) is to determine the most effective power source for the actuator. Points to consider are: \n\n\nPower source availability \nTorque at the valve stem \nFailure mode \nControl accessories \nSpeed of operation \nFrequency of operation \nPlant environment \nSize of valve \nSystem component costs \nSystem maintenance \nThe most practical pneumatic actuators utilize an air pressure supply of 40 to 120 psi (3 to 8 bar). Generally they are sized for a supply pressure of 60 to 80 psi (4 to 6 bar). Higher air pressure is usually difficult to guarantee and lower pressures require a very large diameter piston or diaphragm to generate desirable torque. \n\nElectric actuators are often used with a 110 VAC power supply but are available with a wide variety of AC and DC motors in single phase and three phase. \n\nMORE INFO AT THE WEBSITE
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What a load of blocks!