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Slide Valve
Slide Valve
Published: 2012/04/27
Channel: TaskForceTips
SLIDE VALVE OPERATION
SLIDE VALVE OPERATION
Published: 2013/10/30
Channel: Vichai K.
slide valve and qev airgun
slide valve and qev airgun
Published: 2012/12/11
Channel: Boks725
Mucon Slide Valve
Mucon Slide Valve
Published: 2012/05/31
Channel: ProcessComponents
HOW TO MAKE A STEAM ENGINE SLIDE VALVE - MODEL ENGINEERING FOR BEGINNERS #10
HOW TO MAKE A STEAM ENGINE SLIDE VALVE - MODEL ENGINEERING FOR BEGINNERS #10
Published: 2016/02/16
Channel: Keith Appleton
Steam Engine Animation
Steam Engine Animation
Published: 2016/06/03
Channel: TinkeringJohn
horizontal slide valve
horizontal slide valve
Published: 2008/08/23
Channel: sx35
valterra pvc slide valve
valterra pvc slide valve
Published: 2013/06/13
Channel: Plastic Pipe Shop Ltd
Series AHS - 3 way 2 position Hand Slide valve
Series AHS - 3 way 2 position Hand Slide valve
Published: 2012/10/02
Channel: Process Systems
CSH Screw Compressor - Slider Valve
CSH Screw Compressor - Slider Valve
Published: 2011/08/26
Channel: BITZERUSaftermarket
Comparison: Trumpet, Slide Trumpet, Valve Trombone, Slide Trombone, Flute & Flugel
Comparison: Trumpet, Slide Trumpet, Valve Trombone, Slide Trombone, Flute & Flugel
Published: 2014/07/10
Channel: Jonathan Milam
SNNC 182 P1  Grinder mount  Steam engine slide valve
SNNC 182 P1 Grinder mount Steam engine slide valve
Published: 2017/07/16
Channel: doubleboost
Vortex Orifice Slide Gate Valve
Vortex Orifice Slide Gate Valve
Published: 2013/12/31
Channel: Vortex - Solids & Bulk Handling Components
How Do Slide Gate Valves Work?
How Do Slide Gate Valves Work?
Published: 2011/09/02
Channel: Aerodyne Environmental
Hot stroke test  of a FCCU high temperature slide valve @ 750 degrees Celsius.
Hot stroke test of a FCCU high temperature slide valve @ 750 degrees Celsius.
Published: 2016/06/29
Channel: Delta Controls BV
Chalk Talk 1: How Steam Engines Work, Slide Valve vs. Piston Valve
Chalk Talk 1: How Steam Engines Work, Slide Valve vs. Piston Valve
Published: 2017/12/30
Channel: Fair Weather Foundry
Superbone ( slide/valve trombone )
Superbone ( slide/valve trombone )
Published: 2007/01/26
Channel: basunfan
D-(Slide) Valve on 1870s Planer
D-(Slide) Valve on 1870s Planer
Published: 2007/09/08
Channel: piersa2001
Crossley piano base slide-valve engine
Crossley piano base slide-valve engine
Published: 2014/04/22
Channel: Patrick Livingstone
Pentair Slide Valve 261165 263064
Pentair Slide Valve 261165 263064
Published: 2013/03/29
Channel: PoguePoolSpa.com
Our new slide valve engine
Our new slide valve engine
Published: 2015/05/17
Channel: John Palmer
Hand Slide Valve Suppliers
Hand Slide Valve Suppliers
Published: 2016/09/04
Channel: Joy Z
Vission 20/20 Slide Valve Calibration
Vission 20/20 Slide Valve Calibration
Published: 2013/05/01
Channel: Emerson Commercial and Residential Solutions
Vilter™ Single Screw Compressor Slide Valve Installation
Vilter™ Single Screw Compressor Slide Valve Installation
Published: 2014/04/29
Channel: Emerson Commercial and Residential Solutions
How to backwash DE filter with a slide valve
How to backwash DE filter with a slide valve
Published: 2017/07/15
Channel: AMPPoolGuys
TDSH Slide Valve
TDSH Slide Valve
Published: 2013/05/20
Channel: Pilgrim Falcon
Mamod SL1 Slide Valve (Part 1)
Mamod SL1 Slide Valve (Part 1)
Published: 2009/12/21
Channel: APBriggs2009
The First Test, Valve/Slide trumpet: Naga Phoenix
The First Test, Valve/Slide trumpet: Naga Phoenix
Published: 2011/09/28
Channel: schlubme
Vortex Roller Slide Gate Valve
Vortex Roller Slide Gate Valve
Published: 2013/12/31
Channel: Vortex - Solids & Bulk Handling Components
Double Block & Bleed Parallel Slide Gate Valve
Double Block & Bleed Parallel Slide Gate Valve
Published: 2013/08/23
Channel: Orion Valves
Twin Cylinder Slide Valve engine
Twin Cylinder Slide Valve engine
Published: 2015/06/20
Channel: steamer123
tapco slide valve
tapco slide valve
Published: 2015/12/11
Channel: kogela100
Functioning of Slide Fuel Valve
Functioning of Slide Fuel Valve
Published: 2011/07/11
Channel: Aayushman Singh
Filter Backwash Valve Leaking or Stiff -Replacing the Stem O-rings
Filter Backwash Valve Leaking or Stiff -Replacing the Stem O-rings
Published: 2014/08/31
Channel: Swimming Pool Tips, Reviews & How To -MrDgvb1
Hydraulic slide valve functional test
Hydraulic slide valve functional test
Published: 2011/10/31
Channel: MIDValves
QEV + homemade slide valve.
QEV + homemade slide valve.
Published: 2012/09/13
Channel: Sokauo DIY
Vortex Valves HDP Slide Valve
Vortex Valves HDP Slide Valve
Published: 2009/02/27
Channel: LeBlansch Bulkhandling Equipment BV
1884 Schleicher Schumm Otto Slide Valve
1884 Schleicher Schumm Otto Slide Valve
Published: 2014/05/31
Channel: Travis Benner
Sliding valve air engine
Sliding valve air engine
Published: 2017/08/19
Channel: Ken McConnell
Part 38 - PM #3 Steam Engine-Slide Valve
Part 38 - PM #3 Steam Engine-Slide Valve
Published: 2012/03/17
Channel: W5CYF / TinkerJohn
Gasmotor slide valve
Gasmotor slide valve
Published: 2017/10/26
Channel: Rik Lemmens
10 HP Schleicher Schumm slide valve engine Start up week 2 after slide modification, re-rescraping
10 HP Schleicher Schumm slide valve engine Start up week 2 after slide modification, re-rescraping
Published: 2013/04/28
Channel: Wayne Grenning
New Slide Fuel Valve
New Slide Fuel Valve
Published: 2016/02/27
Channel: Жизнь прекрасна
1888 Crossley-Otto Slide Valve Piano Base Engine - Brings $320,000 at Aumann Auctions
1888 Crossley-Otto Slide Valve Piano Base Engine - Brings $320,000 at Aumann Auctions
Published: 2012/12/04
Channel: Aumann Auctions
1882 Crossley Slide Valve Flame Ignition Engine After Restoration
1882 Crossley Slide Valve Flame Ignition Engine After Restoration
Published: 2016/03/30
Channel: Wayne Grenning
Slide Valve Upgrade for Cereal Cookers
Slide Valve Upgrade for Cereal Cookers
Published: 2014/10/22
Channel: Baker Perkins
Burrell Slide Valve Faces
Burrell Slide Valve Faces
Published: 2013/04/04
Channel: MWSteamEngineering
horizontal double acting slide valve steam engine
horizontal double acting slide valve steam engine
Published: 2010/11/11
Channel: tank1es
Mamod SL1 Slide Valve (Part 2)
Mamod SL1 Slide Valve (Part 2)
Published: 2009/12/21
Channel: APBriggs2009
Prototype Slide Valve Steam Engine
Prototype Slide Valve Steam Engine
Published: 2016/01/30
Channel: 1957Shep
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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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 the piston descends, the valve moves upwards to admit steam below the piston and release exhaust from above.

The slide valve is a rectilinear valve used to control the admission of steam into, and emission of exhaust from, the cylinder of a steam engine.

The image description page explains how this SVG animation can be viewed

Use[edit]

In the 19th century, most steam locomotives used slide valves to control the flow of steam into and out of the cylinders. In the 20th century, slide valves were gradually superseded by piston valves, particularly in engines using superheated steam. There were two reasons for this:

  • With piston valves, the steam passages can be made shorter. This reduces resistance to the flow of steam and improves efficiency.
  • It is difficult to lubricate slide valves adequately in the presence of superheated steam.

Murdoch's D slide valve[edit]

Murdoch's long D slide valve

The D slide valve, or more specifically Long D slide valve, is a form of slide valve, invented by William Murdoch and patented in 1799. It is named after the hollow central D-sectioned piston.

This valve worked by "connecting the upper and lower valves so as to be worked by one rod or spindle, and in making the stem or tube which connects them hollow, so as to serve for an induction pipe to the upper end of the cylinder." This allowed two valves to do the work of four.

The above description (referring to upper and lower valves) clearly relates to an engine with a vertical cylinder, such as a beam engine. Where the cylinders are horizontal, as in a steam locomotive, the valves would be side-by-side.

Balanced slide valve[edit]

The balanced slide valve was invented by the Scottish engineer Alexander Allan. It was not much used in the UK but, at one time, had great popularity in the United States. It gave some of the advantages of a piston valve to a slide valve by relieving the pressure on the back of the valve, thus reducing friction and wear.

See also[edit]

External links[edit]

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