Ball valve - Revision history

MCRKilljoy at 00:38, 9 December 2016

2016-12-09T00:38:57Z

← Older revision		Revision as of 19:38, 8 December 2016
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	[[Image:Ball_valve.jpg\|frame\|A photo of a typical PVC ball valve]]		[[Image:Ball_valve.jpg\|frame\|A photo of a typical PVC ball valve]]
	'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest [[valve]] you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].		'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest [[valve]] you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].
	The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long [[barrel]]s and/or heavy projectiles (and thus long barrel dwell times). Ball valves are also used to isolate parts of a launcher, for example, when filling with a male [[quick disconnect]] to stop air from escaping. [[Gate valves]] can be used here too.		The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long [[barrel]]s and/or heavy projectiles (and thus long barrel dwell times). Ball valves are also used to isolate parts of a launcher, for example, when filling with a male [[quick disconnect]] to stop air from escaping. [[Gate valve\|Gate valves]] can be used here too.

	Opening time can be shortened by:		Opening time can be shortened by:

MCRKilljoy at 00:38, 9 December 2016

2016-12-09T00:38:41Z

← Older revision		Revision as of 19:38, 8 December 2016
Line 2:		Line 2:
	[[Image:Ball_valve.jpg\|frame\|A photo of a typical PVC ball valve]]		[[Image:Ball_valve.jpg\|frame\|A photo of a typical PVC ball valve]]
	'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest [[valve]] you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].		'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest [[valve]] you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].
	The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long [[barrel]]s and/or heavy projectiles (and thus long barrel dwell times).		The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long [[barrel]]s and/or heavy projectiles (and thus long barrel dwell times). Ball valves are also used to isolate parts of a launcher, for example, when filling with a male [[quick disconnect]] to stop air from escaping. [[Gate valves]] can be used here too.

	Opening time can be shortened by:		Opening time can be shortened by:
Line 10:		Line 10:
	However, there is more performance to be gained by using a faster valve, such as a butterfly valve, [[piston valve\|piston]] or [[diaphragm valve]], or a [[burst disk]].		However, there is more performance to be gained by using a faster valve, such as a butterfly valve, [[piston valve\|piston]] or [[diaphragm valve]], or a [[burst disk]].

	It is possible to achieve extremely low opening times with ball valves through somewhat unconventional methods. Unfortunately, to open in the time necessary to make it a practical valve, a rather large amount of energy must be applied - so much, in fact, that in the lone test this was actually tried, the kinetic energy of the handle completely demolished the valve, and the ram was never recovered. This only serves to prove that you really are better off with a faster valve.		It is possible to achieve extremely low opening times with ball valves through somewhat unconventional methods. Unfortunately, to open in the time necessary to make it a practical valve, a rather large amount of energy must be applied - so much, in fact, that in the lone test this was actually tried, the kinetic energy of the handle completely demolished the valve, and the ram was never recovered. This only serves to prove that you really are better off with a faster valve.

	[[category:valves]]		[[category:valves]]

Boilingleadbath: forgot lable descriptions for cross-section

2009-08-27T22:42:24Z

forgot lable descriptions for cross-section

← Older revision		Revision as of 17:42, 27 August 2009
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	[[Image:Wballvalve.png\|frame\|Cross-section of typical ball valve]]		[[Image:Wballvalve.png\|frame\|Cross-section of typical ball valve; A is barrel, B is ball, C is handle (not actually in the plane of the cut), D is chamber]]
	[[Image:Ball_valve.jpg\|frame\|A photo of a typical PVC ball valve]]		[[Image:Ball_valve.jpg\|frame\|A photo of a typical PVC ball valve]]
	'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest [[valve]] you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].		'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest [[valve]] you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].

Boilingleadbath: + internal diagram

2009-08-27T22:41:06Z

+ internal diagram

← Older revision		Revision as of 17:41, 27 August 2009
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	[[Image:Ball_valve.jpg\|frame\|A typical PVC ball valve]]		[[Image:Wballvalve.png\|frame\|Cross-section of typical ball valve]]
			[[Image:Ball_valve.jpg\|frame\|A photo of a typical PVC ball valve]]
	'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest [[valve]] you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].		'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest [[valve]] you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].
	The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long [[barrel]]s and/or heavy projectiles (and thus long barrel dwell times).		The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long [[barrel]]s and/or heavy projectiles (and thus long barrel dwell times).

Benstern: added links

2008-06-01T13:02:14Z

added links

← Older revision		Revision as of 08:02, 1 June 2008
Line 1:		Line 1:
	[[Image:Ball_valve.jpg\|frame\|A typical PVC ball valve]]		[[Image:Ball_valve.jpg\|frame\|A typical PVC ball valve]]
	'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest valve you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].		'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest [[valve]] you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].
	The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long ~~barrels~~ and/or heavy projectiles (and thus long barrel dwell times).		The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long [[barrel]]s and/or heavy projectiles (and thus long barrel dwell times).

	Opening time can be shortened by:		Opening time can be shortened by:
Line 7:		Line 7:
	* Applying dish soap or other lubricant to the moving part. Oil or oil based lubricants should ''not'' be used, because they can damage the seals. Lubricating the ball valve will decrease friction and will result in a faster opening time.		* Applying dish soap or other lubricant to the moving part. Oil or oil based lubricants should ''not'' be used, because they can damage the seals. Lubricating the ball valve will decrease friction and will result in a faster opening time.

	However, there is more performance to be gained by using a faster valve, such as a [[butterfly valve]], [[piston valve\|piston]] or [[diaphragm valve]], or a [[burst disk]].		However, there is more performance to be gained by using a faster valve, such as a butterfly valve, [[piston valve\|piston]] or [[diaphragm valve]], or a [[burst disk]].

	It is possible to achieve extremely low opening times with ball valves through somewhat unconventional methods. Unfortunately, to open in the time necessary to make it a practical valve, a rather large amount of energy must be applied - so much, in fact, that in the lone test this was actually tried, the kinetic energy of the handle completely demolished the valve, and the ram was never recovered. This only serves to prove that you really are better off with a faster valve.		It is possible to achieve extremely low opening times with ball valves through somewhat unconventional methods. Unfortunately, to open in the time necessary to make it a practical valve, a rather large amount of energy must be applied - so much, in fact, that in the lone test this was actually tried, the kinetic energy of the handle completely demolished the valve, and the ram was never recovered. This only serves to prove that you really are better off with a faster valve.

	[[category:valves]]		[[category:valves]]

DYI at 02:14, 21 March 2008

2008-03-21T02:14:31Z

← Older revision		Revision as of 21:14, 20 March 2008
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	* Applying dish soap or other lubricant to the moving part. Oil or oil based lubricants should ''not'' be used, because they can damage the seals. Lubricating the ball valve will decrease friction and will result in a faster opening time.		* Applying dish soap or other lubricant to the moving part. Oil or oil based lubricants should ''not'' be used, because they can damage the seals. Lubricating the ball valve will decrease friction and will result in a faster opening time.

	However, there is more performance to be gained by using a faster valve, such as a [[butterfly valve]], [[piston valve\|piston]] or [[diaphragm valve]], or a [[burst disk]].		However, there is more performance to be gained by using a faster valve, such as a [[butterfly valve]], [[piston valve\|piston]] or [[diaphragm valve]], or a [[burst disk]].

			It is possible to achieve extremely low opening times with ball valves through somewhat unconventional methods. Unfortunately, to open in the time necessary to make it a practical valve, a rather large amount of energy must be applied - so much, in fact, that in the lone test this was actually tried, the kinetic energy of the handle completely demolished the valve, and the ram was never recovered. This only serves to prove that you really are better off with a faster valve.

	[[category:valves]]		[[category:valves]]

70.16.86.204: linkage

2006-01-27T22:32:30Z

linkage

← Older revision		Revision as of 17:32, 27 January 2006
Line 1:		Line 1:
	[[Image:Ball_valve.jpg\|frame\|A typical PVC ball valve]]		[[Image:Ball_valve.jpg\|frame\|A typical PVC ball valve]]
	'''Ball valves''' open with a 90* twist of lever. They are the cheapest valve you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].		'''Ball valves''' open with a 90* twist of lever, similar to the operation of a [[butterfly valve]]. They are about the cheapest valve you can get, but also (typically) yield the worst performance, due to the slow [[opening time]].
	The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long barrels and/or heavy projectiles (and thus long barrel dwell times).		The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long barrels and/or heavy projectiles (and thus long barrel dwell times).

GalFisk at 21:09, 24 October 2005

2005-10-24T21:09:32Z

← Older revision		Revision as of 16:09, 24 October 2005
Line 3:		Line 3:
	The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long barrels and/or heavy projectiles (and thus long barrel dwell times).		The flow of a ball valve, however, is quite good due to its straight-through nature. This will tend to even out the situation in cannons with very long barrels and/or heavy projectiles (and thus long barrel dwell times).

	~~Openning~~ time can be shortened by:		Opening time can be shortened by:
	* Using a spring, or a pneumatic ram to actuate the valve		* Using a spring or a pneumatic ram to actuate the valve
	* Applying dish soap or other lubricant to the moving part. Oil or oil based lubricants should ''not'' be used, because they can damage the seals. Lubricating the ball valve will decrease friction and will result in a faster opening time.		* Applying dish soap or other lubricant to the moving part. Oil or oil based lubricants should ''not'' be used, because they can damage the seals. Lubricating the ball valve will decrease friction and will result in a faster opening time.

	However, there is more performance to be gained by using a faster valve, such as a [[butterfly valve]], [[piston valve\|piston]] or [[~~diaphram~~ valve~~\|diaphram~~]] ~~valve~~, or a [[burst disk]].		However, there is more performance to be gained by using a faster valve, such as a [[butterfly valve]], [[piston valve\|piston]] or [[diaphragm valve]], or a [[burst disk]].

	[[category:valves]]		[[category:valves]]

Ian2accurate at 18:57, 24 October 2005

2005-10-24T18:57:40Z

← Older revision		Revision as of 13:57, 24 October 2005
Line 5:		Line 5:
	Openning time can be shortened by:		Openning time can be shortened by:
	* Using a spring, or a pneumatic ram to actuate the valve		* Using a spring, or a pneumatic ram to actuate the valve
	* Applying dish soap to the moving part. ~~This lubricates it, making it faster and easier to open.~~ Oil should ''not'' be used, because it can damage the seals.		* Applying dish soap or other lubricant to the moving part. Oil or oil based lubricants should ''not'' be used, because they can damage the seals. Lubricating the ball valve will decrease friction and will result in a faster opening time.

	However, there is more performance to be gained by using a faster valve, such as a [[butterfly valve]], [[piston valve\|piston]] or [[diaphram valve\|diaphram]] valve, or a [[burst disk]].		However, there is more performance to be gained by using a faster valve, such as a [[butterfly valve]], [[piston valve\|piston]] or [[diaphram valve\|diaphram]] valve, or a [[burst disk]].

	[[category:valves]]		[[category:valves]]

GalFisk at 16:18, 24 October 2005

2005-10-24T16:18:20Z

← Older revision		Revision as of 11:18, 24 October 2005
Line 5:		Line 5:
	Openning time can be shortened by:		Openning time can be shortened by:
	* Using a spring, or a pneumatic ram to actuate the valve		* Using a spring, or a pneumatic ram to actuate the valve
	* Applying dish soap to the moving part. This lubricates it, making it faster and easier to open. Oil should~~<i>~~not~~</i>~~ be used, because it can damage the seals.		* Applying dish soap to the moving part. This lubricates it, making it faster and easier to open. Oil should ''not'' be used, because it can damage the seals.

	However, there is more performance to be gained by using a faster valve, such as a [[butterfly valve]], [[piston valve\|piston]] or [[diaphram valve\|diaphram]] valve, or a [[burst disk]].		However, there is more performance to be gained by using a faster valve, such as a [[butterfly valve]], [[piston valve\|piston]] or [[diaphram valve\|diaphram]] valve, or a [[burst disk]].

	[[category:valves]]		[[category:valves]]