Play Video
1
slide valve and qev airgun
slide valve and qev airgun
::2012/12/10::
Play Video
2
Slide Valve
Slide Valve
::2012/04/27::
Play Video
3
AHS02 Hand Slide valve
AHS02 Hand Slide valve
::2012/10/02::
Play Video
4
horizontal slide valve
horizontal slide valve
::2008/08/23::
Play Video
5
Comparison: Trumpet, Slide Trumpet, Valve Trombone, Slide Trombone, Flute & Flugel
Comparison: Trumpet, Slide Trumpet, Valve Trombone, Slide Trombone, Flute & Flugel
::2014/07/09::
Play Video
6
Forest slide valve carrier flame igniton engine .
Forest slide valve carrier flame igniton engine .
::2012/06/15::
Play Video
7
Mucon Slide Valve
Mucon Slide Valve
::2012/05/31::
Play Video
8
Double Acting Slide Valve Model Steam Engine
Double Acting Slide Valve Model Steam Engine
::2009/03/01::
Play Video
9
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
::2013/04/28::
Play Video
10
Part 38 - PM #3 Steam Engine-Slide Valve
Part 38 - PM #3 Steam Engine-Slide Valve
::2012/03/17::
Play Video
11
Double Block & Bleed Parallel Slide Gate Valve
Double Block & Bleed Parallel Slide Gate Valve
::2013/08/23::
Play Video
12
29-Slide Valve | Steam Engine | ( Catia )
29-Slide Valve | Steam Engine | ( Catia )
::2014/09/07::
Play Video
13
Gas  engine,Crossley Otto, Otto slide valve.
Gas engine,Crossley Otto, Otto slide valve.
::2010/02/14::
Play Video
14
QEV + homemade slide valve.
QEV + homemade slide valve.
::2012/09/13::
Play Video
15
Scraping Slide Valve Cover
Scraping Slide Valve Cover
::2013/03/12::
Play Video
16
Vortex Roller Slide Gate Valve
Vortex Roller Slide Gate Valve
::2013/12/31::
Play Video
17
TWO CYLINDER SLIDE VALVE STEAM ENGINE CRANKSHAFT: VIDEO #2
TWO CYLINDER SLIDE VALVE STEAM ENGINE CRANKSHAFT: VIDEO #2
::2010/07/29::
Play Video
18
Forest Flame Ignition Slide Valve Reproduction Engines Grenning Models 2014
Forest Flame Ignition Slide Valve Reproduction Engines Grenning Models 2014
::2014/09/28::
Play Video
19
TDSH Slide Valve
TDSH Slide Valve
::2013/05/19::
Play Video
20
D-(Slide) Valve on 1870s Planer
D-(Slide) Valve on 1870s Planer
::2007/09/07::
Play Video
21
Redesigning a vertical slide valve steam engine - Phase Two.
Redesigning a vertical slide valve steam engine - Phase Two.
::2009/10/02::
Play Video
22
Otto Slide Valve 4 cycle carrier flame ignition test engine
Otto Slide Valve 4 cycle carrier flame ignition test engine
::2013/02/09::
Play Video
23
Maxitrak Slide Valve Setting
Maxitrak Slide Valve Setting
::2012/10/17::
Play Video
24
Steam tram powering home made slide valve engine
Steam tram powering home made slide valve engine
::2013/06/18::
Play Video
25
Crossley piano base slide-valve engine
Crossley piano base slide-valve engine
::2014/04/22::
Play Video
26
Superbone ( slide/valve trombone )
Superbone ( slide/valve trombone )
::2007/01/26::
Play Video
27
Martini Slide Valve Flame Ignition Engine at 2013 Nuenen
Martini Slide Valve Flame Ignition Engine at 2013 Nuenen
::2013/05/19::
Play Video
28
Pentair Slide Valve 261165 263064
Pentair Slide Valve 261165 263064
::2013/03/29::
Play Video
29
valterra pvc slide valve
valterra pvc slide valve
::2013/06/13::
Play Video
30
10 HP Schleicher Schumm Slide Valve  Start-up April 21st 2013
10 HP Schleicher Schumm Slide Valve Start-up April 21st 2013
::2013/04/22::
Play Video
31
1889 Schleicher Schumm slide valve Otto 2nd unrestored run
1889 Schleicher Schumm slide valve Otto 2nd unrestored run
::2014/05/18::
Play Video
32
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
::2012/12/03::
Play Video
33
Cast iron slide valve backing plate floating on air cushon after being properly hand scraped
Cast iron slide valve backing plate floating on air cushon after being properly hand scraped
::2013/07/30::
Play Video
34
2nd  video of the slide valve flame ignition test engine
2nd video of the slide valve flame ignition test engine
::2013/02/09::
Play Video
35
Trumpet - why you should use the 3rd valve slide
Trumpet - why you should use the 3rd valve slide
::2013/02/12::
Play Video
36
Hille Motor Schieber Gasmotor slide valve stationary gas engine
Hille Motor Schieber Gasmotor slide valve stationary gas engine
::2013/04/09::
Play Video
37
The First Test, Valve/Slide trumpet: Naga Phoenix
The First Test, Valve/Slide trumpet: Naga Phoenix
::2011/09/28::
Play Video
38
Fantastic Scale model of a Deutz slide valve with working flame ignition
Fantastic Scale model of a Deutz slide valve with working flame ignition
::2013/05/20::
Play Video
39
Crossley Slide Valve flame ignition engine
Crossley Slide Valve flame ignition engine
::2014/09/21::
Play Video
40
My New Twin Cylinder Slide Valve Steam Engine - Bottom Half!
My New Twin Cylinder Slide Valve Steam Engine - Bottom Half!
::2010/12/04::
Play Video
41
8 HP 1889 Schleicher Schumm Slide Valve Start up Sn 3211
8 HP 1889 Schleicher Schumm Slide Valve Start up Sn 3211
::2014/05/25::
Play Video
42
Crossley Piano Base Slide Valve Engine From Anson displayed at the 2013 Nuenen Rally
Crossley Piano Base Slide Valve Engine From Anson displayed at the 2013 Nuenen Rally
::2013/05/22::
Play Video
43
CSH Screw Compressor - Slider Valve
CSH Screw Compressor - Slider Valve
::2011/08/26::
Play Video
44
Warchalowski,Stationärmotor,stationary engine,slide valve,Schiebermotor
Warchalowski,Stationärmotor,stationary engine,slide valve,Schiebermotor
::2014/10/12::
Play Video
45
Otto,Slide Valve,Stationärmotor,Stationary engine, Deutz A,Stationaire Motor,Moteur fixe
Otto,Slide Valve,Stationärmotor,Stationary engine, Deutz A,Stationaire Motor,Moteur fixe
::2013/08/11::
Play Video
46
Two Cylinder Slide Valve Steam Engine Crankshaft: Video #1
Two Cylinder Slide Valve Steam Engine Crankshaft: Video #1
::2010/07/27::
Play Video
47
Crossley,look around,slide valve,stationary engine,Stationärmotor,Gasmotor,Standmotor
Crossley,look around,slide valve,stationary engine,Stationärmotor,Gasmotor,Standmotor
::2014/10/26::
Play Video
48
How to make a semi-automatic airgun (version 1)
How to make a semi-automatic airgun (version 1)
::2012/03/28::
Play Video
49
Vilter™ Single Screw Compressor Slide Valve Installation
Vilter™ Single Screw Compressor Slide Valve Installation
::2014/04/29::
Play Video
50
Crossley,Start,slide valve,stationary engine,Gasmotor,Stationärmotor,Standmotor
Crossley,Start,slide valve,stationary engine,Gasmotor,Stationärmotor,Standmotor
::2014/10/26::
NEXT >>
RESULTS [51 .. 101]
From Wikipedia, the free encyclopedia
Jump to: navigation, search
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 USA. 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]

Wikipedia content is licensed under the GFDL License
Powered by YouTube
MASHPEDIA
LEGAL
  • Mashpedia © 2014