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Mitral Stenosis: Heart Valve Disorders: Merck Manual Home Edition
Mitral stenosis (mitral valve stenosis) is a narrowing of the mitral valve opening that increases resistance to ... to pass through the narrowed valve opening from the left atrium into the left ventricle. Unlike a normal valve, which opens silently, the abnormal valve often makes a snapping ...
merck.com

Aortic Stenosis: Heart Valve Disorders: Merck Manual Home Edition
Over the years, the opening of a defective valve often becomes stiff and narrow because calcium accumulates. Spotlight on Aging Sometimes calcium accumulates on the aortic valve, and the valve ...
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App. E: How to Make a Homemade Piston Pump - Nuclear War Survival Skills
If while someone is shining a flashlight through a valve opening in the other end of the pump you observe that parts ... a shelter through a hood, gooseneck pipe, or other air-supply opening that causes all but tiny fallout particles to fall out before ...
oism.org

Your Drinking Water
Fire Department is using large quantities of water, or simply by opening a fire hydrant to test it. Any buildings near the break or ... in the water mains. Have you had to replace the toilet flush valve or toilet ballcock in your bathroom? It's a fairly easy job. ... , did you buy the more expensive, "plumbing code approved" flush valve? Or did you buy the valve that was on sale? Odds are high that you ...
www.mindspring.com

South Pacific Solidarity (Do or Die)
Indonesian Embassy in London. Getting there just before opening, the masked picketeers succeed in turning away quite a few freaked-out embassy staff and ... nearby with banners. A timing device was planted in a toilet that later opened a valve on the cold water supply leading to flood damage during Friday night and Saturday morning ...
www.eco-action.org

Sourcebook Rainwater Guidelines
Downspouts should provide 1 square inch of downspout opening for every 100 square feet of roof area. The maximum run ... with non-toxic waterproof material. Manholes or risers should have a minimum opening of 24 inches and should extend at least 8 inches above grade ... used to pump from a cistern). A screened 1.25 inch foot valve inside the tank connected to an 1.25 inch outlet from ...
www.greenbuilder.com

Rainwater Harvesting FAQ :: HarvestH2O.com
When do I use a regulator versus a limiting valve? Answers: 1. How do you harvest rainwater? As amazing as it sounds, this is a ... how small the opening is in the filter. Mesh Micron 50 280 100 152 150 104 200 73 24. When do I use a regulator versus a limiting valve? Limit valves are ...
harvesth2o.com

Hydro International Stormwater - Reg-U-Flo Vortex Valve Flow Control for Stormwater - Overview
Flo® Filter First Defense® Stormcell® Reg-U-Flo® Vortex Valve Hydro FloGard® Product Line Hydro SwaleGard® Nettech™ ... Vortex Drop™Shaft Reg-U-Flo® Vortex Valve Reg-U-Flo® Vortex Valve Optimize flow control for up to ... opening is 3-6 times larger than the equivalent orifice • Virtually maintenace free • Performance proven with 17,000 installations worldwide SH-type Reg-U-Flo Vortex Valve ...
www.hydro-international.biz

Autoflush timer valve for preventing stagnation in pipework deadlegs
Autoflush timer valve for preventing stagnation in pipework deadlegs JS HUMIDIFIERS THE HUMIDIFICATION SPECIALIST Home Applications Downloads Company ... in water systems. It will prevent water becoming stagnant in deadlegs on pipework by regularly opening the system for flushing at preset times. The unit can be programmed with up to ...
jshumidifiers.co.uk

On Tap Magazine - Winter 2004
If the stem action is tight as a result of buildup on the stem threads, the operation should be repeated until the opening ... valve, then you repeat the procedure without raising torque until full gate travel is realized. Opening the valve at least three turns to allow flushing of debris from the valve ...
www.nesc.wvu.edu