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Slide gate valve: Ideal for handling dry bulk material in gravity flow, dilute phase, or dense phase pneumatic conveying applications. Similar to a sliding line blind valve, but the latter is for higher-pressure applications; Slide valve: used in early steam engines to control admission and emission of steam from the piston
Cylinder, with slide valve removed to show ports A double-acting slide valve cylinder. Steam enters via the steam port SP, and is admitted by the slide valve SV through the upper passage S to push down the piston P. At the same time, exhaust steam from below the piston passes back up the lower passage S, via the valve cavity, to exhaust E. As ...
For plastic solids and high-viscosity slurries such as paper pulp, a specialty valve known as a knife gate valve is used to cut through the material to stop the flow. A knife gate valve is usually not wedge shaped and has a tapered knife-like edge on its lower surface.
To see the animation, open media:Steam engine slide-valve cylinder animation.svg. It should run in any modern browser or viewer. Recent versions of Chrome, Firefox, Microsoft Edge, Safari, and Opera all support SVG animated with SMIL. Other SVG animations can be found at Category:Animated SVG files.
Within the gate valve, there is a gatelike disk that moves up and down perpendicular to the path of flow and seats against two seat faces to shut off flow. The velocity of the fluid against a partly opened disk may cause vibration and chattering which will ultimately lead to damage to the seating surfaces. This is a common way that gate valves ...
In the process industry, a standard set of symbols is used to prepare drawings of processes. The instrument symbols used in these drawings are generally based on International Society of Automation (ISA) Standard S5.1; The primary schematic drawing used for laying out a process control installation. They usually contain the following information:
The valve gear, actuated by connection to the driving wheels, ensures that steam is delivered to the piston with precision. Types are slide valves, piston valves or poppet valves. [2] [3]: 62 Valve chest / Steam chest Valve chamber next to the cylinder (24) containing passageways to distribute steam to the cylinders. [6]: 41 [3]: 75 Firebox
4. Lifting link 5. Lifting arm 7. Expansion link 8. Radius rod Kuhn slide on a Deutsche Reichsbahn DR Class 65.10 Neubaulok. The Kuhn slide (German: Kuhnsche Schleife) is part of a modified Walschaerts (German: Heusinger) valve gear on steam locomotives [1] and is named after its inventor, Michael Kuhn (1851–1903). The term is also used to ...