Diaphragm valve - Revision history

Technician1002: /* Use */

2009-05-14T22:45:30Z

Use

← Older revision		Revision as of 17:45, 14 May 2009
Line 26:		Line 26:
	<ol><li>One is configured like a barrel sealer with the outlet in the center of the diaphragm. These can be identified by the flow source feeding to the outer area of the diaphram and the outlet is fed from the center of the diaphragm. These have the equalization hole at the edge of the diaphragm to pressurize the pilot area.		<ol><li>One is configured like a barrel sealer with the outlet in the center of the diaphragm. These can be identified by the flow source feeding to the outer area of the diaphram and the outlet is fed from the center of the diaphragm. These have the equalization hole at the edge of the diaphragm to pressurize the pilot area.

	<li>The second configuration is used in most sprinkler valves. The flow is revered so they resemble a chamber sealer valve in operation. These are identified by the source side going to the center of the diaphram. The diaphram on these have the equalization hole in the center of the diaphram to pressurise the pilot area.</ol>		<li>The second configuration is used in most sprinkler valves. The flow is revered so they resemble a chamber sealer valve in operation. These are identified by the source side going to the center of the diaphram. The diaphram on these have the equalization hole in the center of the diaphram to pressurise the pilot area.

			This latter type is a favorite with spudders. The large area outside the valve seat make these open quickly when modified for a large pilot valve</ol>

	Both sprinkler valve configurations use a pilot valve that opens a path from the pilot area to the discharge side of the valve. This is often an electric solonoid, but may be manual or motor driven.		Both sprinkler valve configurations use a pilot valve that opens a path from the pilot area to the discharge side of the valve. This is often an electric solonoid, but may be manual or motor driven.

Technician1002: /* Use */

2009-05-12T08:34:50Z

Use

← Older revision		Revision as of 03:34, 12 May 2009
Line 26:		Line 26:
	<ol><li>One is configured like a barrel sealer with the outlet in the center of the diaphragm. These can be identified by the flow source feeding to the outer area of the diaphram and the outlet is fed from the center of the diaphragm. These have the equalization hole at the edge of the diaphragm to pressurize the pilot area.		<ol><li>One is configured like a barrel sealer with the outlet in the center of the diaphragm. These can be identified by the flow source feeding to the outer area of the diaphram and the outlet is fed from the center of the diaphragm. These have the equalization hole at the edge of the diaphragm to pressurize the pilot area.

	<li>The second configuration is used in most sprinkler valves. The flow is revered so they resemble a chamber sealer valve in operation. These are identified by the source side going to the center of the diaphram. The diaphram on these have the equalization hole in the center of the diaphram to pressurise the pilot area.		<li>The second configuration is used in most sprinkler valves. The flow is revered so they resemble a chamber sealer valve in operation. These are identified by the source side going to the center of the diaphram. The diaphram on these have the equalization hole in the center of the diaphram to pressurise the pilot area.</ol>

	Both sprinkler valve configurations use a pilot valve that opens a path from the pilot area to the discharge side of the valve. This is often an electric solonoid, but may be manual or motor driven.		Both sprinkler valve configurations use a pilot valve that opens a path from the pilot area to the discharge side of the valve. This is often an electric solonoid, but may be manual or motor driven.

Technician1002 at 08:33, 12 May 2009

2009-05-12T08:33:19Z

← Older revision		Revision as of 03:33, 12 May 2009
Line 24:		Line 24:
	Sprinkler valves come in 2 configurations.		Sprinkler valves come in 2 configurations.

	One is configured like a barrel sealer with the outlet in the center of the diaphragm. These can be identified by the flow source feeding to the outer area of the diaphram and the outlet is fed from the center of the diaphragm. These have the equalization hole at the edge of the diaphragm to pressurize the pilot area.		<ol><li>One is configured like a barrel sealer with the outlet in the center of the diaphragm. These can be identified by the flow source feeding to the outer area of the diaphram and the outlet is fed from the center of the diaphragm. These have the equalization hole at the edge of the diaphragm to pressurize the pilot area.

	~~Most~~ sprinkler valves ~~are~~ revered ~~in flow~~ so they resemble a chamber sealer valve in operation. These are identified by the source side going to the center of the diaphram. The diaphram on these have the equalization hole in the center of the diaphram to pressurise the pilot area.		<li>The second configuration is used in most sprinkler valves. The flow is revered so they resemble a chamber sealer valve in operation. These are identified by the source side going to the center of the diaphram. The diaphram on these have the equalization hole in the center of the diaphram to pressurise the pilot area.

	Both sprinkler valve configurations use a pilot valve that opens a path from the pilot area to the discharge side of the valve. This is often an electric solonoid, but may be manual or motor driven.		Both sprinkler valve configurations use a pilot valve that opens a path from the pilot area to the discharge side of the valve. This is often an electric solonoid, but may be manual or motor driven.

Technician1002: Added sprinkler valve info to the diaphragm valve page

2009-05-12T08:29:56Z

Added sprinkler valve info to the diaphragm valve page

@@ Line 18: / Line 18: @@
 The performance of these valves can be calculated with [[GGDT]].
 If your valve [[honking|honks]], it is probably a good idea to invest in a better pilot valve.
 [[category:valves]]

Benstern: added and fixed links

2008-06-01T12:28:26Z

added and fixed links

← Older revision		Revision as of 07:28, 1 June 2008
Line 1:		Line 1:
	A diaphragm valve is a [[~~pilot valve\|~~pilot]] operated valve. It is very similar to a [[piston valve]] in theory, but replaces it's hard cylinder with a flexible diaphragm.		A diaphragm valve is a [[pilot]] operated valve. It is very similar to a [[piston valve]] in theory, but replaces it's hard cylinder with a flexible diaphragm.

	== Construction ==		== Construction ==

	The diaphragm is sometimes made of a simple piece of pliable material, for instance, thick neoprene (about 1/4" of the rubber is common) or a section of tupperware lid. However, there is often a problem with the material not being strong enough. In this case, the center of it is often reinforced with a pair of washers; one a bit bigger than the [[barrel]]'s diameter on the pilot side, and one a bit smaller than it on the barrel/chamber side.		The diaphragm is sometimes made of a simple piece of pliable material, for instance, thick [[neoprene ]](about 1/4" of the rubber is common) or a section of tupperware lid. However, there is often a problem with the material not being strong enough. In this case, the center of it is often reinforced with a pair of washers; one a bit bigger than the [[barrel]]'s diameter on the pilot side, and one a bit smaller than it on the barrel/[[chamber]] side.

	These valves are often used on [[coaxial]]s and [[over/under]]s. In an over/under, the valve is built in a "T" fitting. The barrel is put coaxially through one end, the pilot and ~~diaphram~~ are put in the opposite one, and a chamber is connected to the perpendicular opening with a 90° elbow.		These valves are often used on [[coaxial]]s and [[over/under]]s. In an over/under, the valve is built in a "T" fitting. The barrel is put coaxially through one end, the pilot and diaphragm are put in the opposite one, and a chamber is connected to the perpendicular opening with a 90° elbow.

	== Use ==		== Use ==
Line 11:		Line 11:
	Operation:		Operation:
	<ol><li>Air is added by filling behind the diaphragm (C).		<ol><li>Air is added by filling behind the diaphragm (C).
	<li>The diaphragm (E) is flexed forwards, and seals against the barrel (A). (Alternatively, one can use a spring to move the piston forwards, which allows one to fill [slowly at first, to allow the pressure to equalize] from the chamber.)		<li>The diaphragm (E) is flexed forwards, and seals against the barrel (A). (Alternatively, one can use a spring to move the piston forwards, which allows one to fill [slowly at first, to allow the [[pressure]] to equalize] from the chamber.)
	<li>More air is added, and leaks around the diaphragm (or through a small equalization hole) and into the chamber (B), filling it to the desired pressure.		<li>More air is added, and leaks around the diaphragm (or through a small equalization hole) and into the chamber (B), filling it to the desired pressure.
	<li>The pilot valve (D) behind the diaphragm is opened, the pressure in the ~~[[pilot\|~~pilot volume]] (C) drops, and the higher pressure in the chamber area pushes the diaphragm away from the barrel.		<li>The [[pilot valve]] (D) behind the diaphragm is opened, the pressure in the pilot volume (C) drops, and the higher pressure in the chamber area pushes the diaphragm away from the barrel.
	<li>The air flows around from the chamber, and into the barrel, propelling the projectile.</ol>		<li>The air flows around from the chamber, and into the barrel, propelling the projectile.</ol>

	The performance of these valves can be calculated with ~~the~~ [[GGDT]].		The performance of these valves can be calculated with [[GGDT]].
	If your valve [[honking\|honks]], it is probably a good idea to invest in a better [[pilot valve]].		If your valve [[honking\|honks]], it is probably a good idea to invest in a better pilot valve.
	[[category:valves]]		[[category:valves]]

Benstern: spelling

2007-06-05T16:29:25Z

spelling

← Older revision		Revision as of 11:29, 5 June 2007
Line 1:		Line 1:
	A diaphragm valve is a [[pilot valve\|pilot]] operated valve. It is very similar to a [[piston valve]] in ~~therory~~, but replaces it's hard cylinder with a flexible diaphragm.		A diaphragm valve is a [[pilot valve\|pilot]] operated valve. It is very similar to a [[piston valve]] in theory, but replaces it's hard cylinder with a flexible diaphragm.

	== Construction ==		== Construction ==

	The diaphragm is sometimes made of a simple piece of pliable material, for instance, thick neoprene (about 1/4" of the rubber is common) or a section of tupperware lid. However, there is often a problem with the material not being strong enough. In this case, the center of it is often ~~re-inforced~~ with a pair of washers; one a bit bigger than the [[barrel]]'s diameter on the pilot side, and one a bit smaller than it on the barrel/chamber side.		The diaphragm is sometimes made of a simple piece of pliable material, for instance, thick neoprene (about 1/4" of the rubber is common) or a section of tupperware lid. However, there is often a problem with the material not being strong enough. In this case, the center of it is often reinforced with a pair of washers; one a bit bigger than the [[barrel]]'s diameter on the pilot side, and one a bit smaller than it on the barrel/chamber side.

	These valves are often used on [[coaxial]]s and [[over/under]]s. In an over/under, the valve is built in a "T" fitting. The barrel is put coaxially through one end, the pilot and diaphram are put in the opposite one, and a chamber is ~~conected~~ to the perpendicular opening with a 90° elbow.		These valves are often used on [[coaxial]]s and [[over/under]]s. In an over/under, the valve is built in a "T" fitting. The barrel is put coaxially through one end, the pilot and diaphram are put in the opposite one, and a chamber is connected to the perpendicular opening with a 90° elbow.

	== Use ==		== Use ==
Line 11:		Line 11:
	Operation:		Operation:
	<ol><li>Air is added by filling behind the diaphragm (C).		<ol><li>Air is added by filling behind the diaphragm (C).
	<li>The diaphragm (E) is flexed forwards, and seals against the barrel (A). (~~Alternativly~~, one can use a spring to move the piston forwards, which allows one to fill [slowly at first, to allow the pressure to equalize] from the chamber.)		<li>The diaphragm (E) is flexed forwards, and seals against the barrel (A). (Alternatively, one can use a spring to move the piston forwards, which allows one to fill [slowly at first, to allow the pressure to equalize] from the chamber.)
	<li>More air is added, and leaks around the diaphragm (or through a small ~~equilization~~ hole) and into the chamber (B), filling it to the desired pressure.		<li>More air is added, and leaks around the diaphragm (or through a small equalization hole) and into the chamber (B), filling it to the desired pressure.
	<li>The pilot valve (D) behind the ~~diaphram~~ is opened, the pressure in the [[pilot\|pilot volume]] (C) drops, and the higher pressure in the chamber area pushes the diaphragm away from the barrel.		<li>The pilot valve (D) behind the diaphragm is opened, the pressure in the [[pilot\|pilot volume]] (C) drops, and the higher pressure in the chamber area pushes the diaphragm away from the barrel.
	<li>The air flows around from the chamber, and into the barrel, propelling the projectile.</ol>		<li>The air flows around from the chamber, and into the barrel, propelling the projectile.</ol>

Boilingleadbath: +spring

2006-02-22T21:42:53Z

+spring

← Older revision		Revision as of 16:42, 22 February 2006
Line 11:		Line 11:
	Operation:		Operation:
	<ol><li>Air is added by filling behind the diaphragm (C).		<ol><li>Air is added by filling behind the diaphragm (C).
	<li>The diaphragm (E) is flexed forwards, and seals against the barrel (A).		<li>The diaphragm (E) is flexed forwards, and seals against the barrel (A). (Alternativly, one can use a spring to move the piston forwards, which allows one to fill [slowly at first, to allow the pressure to equalize] from the chamber.)
	<li>More air is added, and leaks around the diaphragm (or through a small equilization hole) and into the chamber (B), filling it to the desired pressure.		<li>More air is added, and leaks around the diaphragm (or through a small equilization hole) and into the chamber (B), filling it to the desired pressure.
	<li>The pilot valve (D) behind the diaphram is opened, the pressure in the [[pilot\|pilot volume]] (C) drops, and the higher pressure in the chamber area pushes the diaphragm away from the barrel.		<li>The pilot valve (D) behind the diaphram is opened, the pressure in the [[pilot\|pilot volume]] (C) drops, and the higher pressure in the chamber area pushes the diaphragm away from the barrel.

GalFisk: /* Use */

2005-10-26T07:24:32Z

Use

← Older revision		Revision as of 02:24, 26 October 2005
Line 9:		Line 9:
	== Use ==		== Use ==
	[[Image:Wdiaphram.PNG\|frame\|top=pressurized, bottom=firing]]		[[Image:Wdiaphram.PNG\|frame\|top=pressurized, bottom=firing]]
	~~Opperation~~:		Operation:
	<ol><li>Air is added by filling behind the diaphragm (C).		<ol><li>Air is added by filling behind the diaphragm (C).
	<li>The diaphragm (E) is flexed forwards, and seals against the barrel (A).		<li>The diaphragm (E) is flexed forwards, and seals against the barrel (A).
Line 16:		Line 16:
	<li>The air flows around from the chamber, and into the barrel, propelling the projectile.</ol>		<li>The air flows around from the chamber, and into the barrel, propelling the projectile.</ol>

	The ~~preformance~~ of these valves can be calculated with the [[GGDT]].		The performance of these valves can be calculated with the [[GGDT]].
	If your valve [[honking\|honks]], it is probably a good idea to invest in a better [[pilot valve]].		If your valve [[honking\|honks]], it is probably a good idea to invest in a better [[pilot valve]].
	[[category:valves]]		[[category:valves]]

GalFisk: typos

2005-10-26T07:21:19Z

typos

← Older revision		Revision as of 02:21, 26 October 2005
Line 1:		Line 1:
	A ~~diaphram~~ valve is a [[pilot valve\|pilot]] ~~opperated~~ valve. It is very similar to a [[piston valve]] in therory, but replaces it's hard cylinder with a ~~flexable diaphram~~.		A diaphragm valve is a [[pilot valve\|pilot]] operated valve. It is very similar to a [[piston valve]] in therory, but replaces it's hard cylinder with a flexible diaphragm.

	== Construction ==		== Construction ==

	The ~~diaphram~~ is sometimes made of a simple ~~peice~~ of pliable material, for instance, thick neoprene (about 1/4" of the rubber is common) or a section of tupperware lid. However, there is often a problem with the material not being strong enough. In this case, the center of it is often re-~~enforced~~ with a pair of washers; one a bit bigger than the [[barrel]]'s diameter on the pilot side, and on a bit smaller than it on the barrel/chamber side.		The diaphragm is sometimes made of a simple piece of pliable material, for instance, thick neoprene (about 1/4" of the rubber is common) or a section of tupperware lid. However, there is often a problem with the material not being strong enough. In this case, the center of it is often re-inforced with a pair of washers; one a bit bigger than the [[barrel]]'s diameter on the pilot side, and one a bit smaller than it on the barrel/chamber side.

	These valves are often used on [[coaxial]]s and [[over/under]]s. In an over/under, the valve is built in a "T" fitting. The barrel is put ~~coaxial~~ through one end, the pilot and diaphram are put in the opposite one, and a chamber is conected to the perpendicular opening with a 90° elbow.		These valves are often used on [[coaxial]]s and [[over/under]]s. In an over/under, the valve is built in a "T" fitting. The barrel is put coaxially through one end, the pilot and diaphram are put in the opposite one, and a chamber is conected to the perpendicular opening with a 90° elbow.

	== Use ==		== Use ==
	[[Image:Wdiaphram.PNG\|frame\|top=pressurized, bottom=firing]]		[[Image:Wdiaphram.PNG\|frame\|top=pressurized, bottom=firing]]
	Opperation:		Opperation:
	<ol><li>Air is added by filling behind the ~~diaphram~~ (C).		<ol><li>Air is added by filling behind the diaphragm (C).
	<li>The ~~diaphram~~ (E) is flexed forwards, and seals on the barrel (A).		<li>The diaphragm (E) is flexed forwards, and seals against the barrel (A).
	<li>More air is added, and leaks around the ~~diaphram~~ (or through a small equilization hole) and into the chamber (B), filling it to the desired pressure.		<li>More air is added, and leaks around the diaphragm (or through a small equilization hole) and into the chamber (B), filling it to the desired pressure.
	<li>The pilot valve (D) behind the diaphram is ~~oppened~~, the pressure in the [[pilot\|pilot volume]] (C) drops, and the higher pressure in the chamber area pushes the ~~diaphram off~~ the barrel.		<li>The pilot valve (D) behind the diaphram is opened, the pressure in the [[pilot\|pilot volume]] (C) drops, and the higher pressure in the chamber area pushes the diaphragm away from the barrel.
	<li>The air flows around from the chamber, and into the barrel, propelling the projectile.</ol>		<li>The air flows around from the chamber, and into the barrel, propelling the projectile.</ol>

Boilingleadbath: picfix

2005-10-25T19:55:51Z

picfix

← Older revision		Revision as of 14:55, 25 October 2005
Line 8:		Line 8:

	== Use ==		== Use ==
	[[Wdiaphram.PNG\|frame\|top=pressurized, bottom=firing]]		[[Image:Wdiaphram.PNG\|frame\|top=pressurized, bottom=firing]]
	Opperation:		Opperation:
	<ol><li>Air is added by filling behind the diaphram (C).		<ol><li>Air is added by filling behind the diaphram (C).