Search results
Results from the WOW.Com Content Network
Double dump valves have two trap-door flap plates which open and close on an alternating cycle. The top gate opens to allow collected material to drop through onto the bottom gate. The top gate then re-closes to prevent air leakage above the valve. The bottom gate then opens to allow material to pass completely through the valve.
The lane is prone to tidal flooding and the outfall is protected by a flap valve. The damage proved to be sufficiently extensive to justify a temporary repair and letting a contract for permanent replacement of a long section. In February 1979, a further collapse occurred 100 metres upstream to the south, in the busy A307 carriageway.
The basic working principle of an air-operated double diaphragm pump. Cross-section sketch of diaphragm fuel pump Air-operated double diaphragm pump. A diaphragm pump (also known as a Membrane pump) is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable valves on either side of the diaphragm (check valve ...
The primary benefit of aortography is the ability to precisely determine the location of injury for surgical planning. [4] Another imaging modality is CT angiogram which has a sensitivity of 100%. [4] A CT angiogram relies on timing the CT scan after a bolus of IV contrast is administered from a peripheral IV site.
Swirl flap principle in a four-valve engine. A swirl flap is a small butterfly valve fitted to four-stroke internal combustion engines with at least two intake valves.It is installed inside or just before one of a cylinder's two intake ports, allowing to throttle its intake port's air flow, causing a swirl in the other intake port not fitted with a swirl flap.
Duckbill exhaust valve for Draeger twin hose regulator. A duckbill valve is a check valve, usually manufactured from rubber or synthetic elastomer, and has two or more flaps, usually shaped like the beak of a duck. [1] It is commonly used in medical applications to prevent contamination due to backflow. A cross-section diagram of a Duckbill valve.
Trickle valves can be used only on systems operating under negative pressure. The vacuum created inside the dust collector holds the valve closed, allowing a head of material to build up above the trickle valve. Once the pressure of the material equals the negative pressure of the system, the valve is forced open and a trickle of material will ...
Repair of retinal tear Repair of retinal detachment with scleral buckling and implant Other repair of retinal detachment Removal of surgically implanted material from posterior segment of eye Operations on vitreous Other operations on retina, choroid, and posterior chamber Operations on extraocular muscles