Fluid sampling valve

Claim 2

A sampling valve to be used in a system wherein selective samples of a fluid are to be taken from separate fluid sources, comprising: a first source passage having an inlet to be connected to a first source of fluid and an outlet; a second source passage having an inlet to be connected to a second source of fluid and an outlet; said source passages being substantially identical; a first sampling passage having an inlet connected to said first source passage between the source passage inlet and outlet, and an outlet to feed a fluid sample; a first slectively operable valve in said fluid sampling passage between the sampling passage inlet and outlet; a second sampling passage between the sampling passage inlet and outlet; a second sampling passage having an inlet connected to said second source passage between the second source passage inlet and outlet, and an outlet to feed a fluid sample; a second selectively operable valve in said second sampling passage between the second sampling passage inlet and outlet; said fluid sampling passages being substantially identical and said valves being substantially identical; and a common sampling passage connected to said sampling passage outlets; manual means for selectively adjusting the fluid resistance in at least one of said source passages to compensate for normal variations in fluid characteristics in the fluid from the sources and to obtain uniform pressures in said common sampling passage with different fluid inlet pressures in each of said source passages; and said manual adjusting means being a screw threaded into and out of said at least one source passage for respectively increasing and decreasing the upstream fluid pressure.

Claim 3

A sampling valve to be used in a system wherein selective samples of a fluid are to be taken from separate fluid sources, comprising: a first source passage having an inlet to be connected to a first source of fluid and an outlet; a second source passage having an inlet to be connected to a second source of fluid and an outlet; said source passages being substantially identical; a first sampling passage having an inlet connected to said first source passage between the source passage inlet and outlet, and an outlet to feed a fluid sample; a first selectively operable valve in said fluid sampling passage between the sampling passage inlet and outlet; a second sampling passage having an inlet connected to said second source passage between the second source passage inlet and outlet, and an outlet to feed a fluid sample; a second selectively operable valve in said second sampling passage between the second sampling passage inlet and outlet; said fluid sampling passages being substantially identical and said valves being substantially identical; a common sampling passage connected to said sampling passage outlets; means for adjusting the fluid resistance in at least one of said source pasages to compensate for normal variations in fluid characteristics in the fluid from the sources; said adjusting means being a screw threaded into and out of said at least one source passage; a valve body; said first and second source passages including two respective straight line passages extending parallel to each other and completely through said body, and a common exhaust passage extending into said body at right angles to said straight line passages and at least partially intersecting said straight line passages; said screw being threaded into and sealing one end of said straight line passages to extend into the intersection area of said common exhaust passage and one straight line passage; and the opposite end of said straiGht line passages having connector means for selectively coupling respective source supply lines.

Claim 4

A sampling valve to be used in a system wherein selective samples of a fluid are to be taken from separate fluid sources, comprising: a first source passage having an inlet to be connected to a first source of fluid and an outlet; a second source passage having an inlet to be connected to a second source of fluid and an outlet; said source passages being substantially identical; a first sampling passage having an inlet connected to said first source passage between the source passage inlet and outlet, and an outlet to feed a fluid sample; a first selectively operable valve in said fluid sampling passage between the sampling passage inlet and outlet; a second sampling passage having an inlet connected to said second source passage between the second source passage inlet and outlet, and an outlet to feed a fluid sample; a second selectively operable valve in said second sampling passage between the second sampling passage inlet and outlet; said fluid sampling passages being substantially identical and said valves being substantially identical; a common sampling passage connected to said sampling passage outlets; means for adjusting the fluid resistance in at least one of said source pasages to compensate for normal variations in fluid characteristics in the fluid from the sources; said adjusting means being a screw threaded into and out of said at least one source passage; a valve body; said first and second source passages including two respective straight line passages extending parallel to each other and completely through said body, and a common exhaust passage extending into said body at right angles to said straight line passages and at least partially intersecting said straight line passages; said screw being threaded into and sealing one end of said straight line passages to extend into the intersection area of said common exhaust passage and one straight line passage; and the opposite end of said straiGht line passages having connector means for selectively coupling respective source supply lines.

Claim 5

A sampling valve to be used in a system wherein selective samples of a fluid are to be taken from separate fluid sources, comprising: a first source passage having an inlet to be connected to a first source of fluid and an outlet; a second source passage having an inlet to be connected to a second source of fluid and an outlet; a first sampling passage having an inlet connected to said first source passage between the source passage inlet and outlet, and an outlet to feed a fluid sample; a first selectively operable valve in said fluid sampling passage between the sampling passage inlet and outlet; a second sampling passage having an inlet connected to said second source passage between the second source passage inlet and outlet, and an outlet to feed a fluid sample; a second selectively operable valve in said second sampling passage betweeen the second sampling passage inlet and outlet; a common sampling passage connected to said sampling passage outlets; means for adjusting the fluid resistance in at least one of said source passages to compensate for normal variations in fluid characteristics in the fluid from the sources; means for creating a substantial pressure drop between each of said sampling passage inlets and source passage outlets so that fluid from pressurized sources will prefer to flow into said common sampling passage when its associated valve is open instead of through its source passage outlet; said pressure drop creating means including a fixed, nonadjustable fluid throttling orifice in each of said first and second source passages between their respective outlets and sampling passage inlets.

Claim 6

A sampling valve to be used in a system wherein selective samples of a fluid are to be taken from separate fluid sources, comprising: a first source passage having an inlet to be connected to a first source of fluid and an outlet; a second source passage having an inlet to be connected to a second source of fluid and an outlet; a first sampling passage having an inlet connected to said first source passage between the source passage inlet and outlet, and an outlet to feed a fluid sample; a first selectively operable valve in said fluid sampling passage between the sampling passage inlet and outlet; a second sampling passage having an inlet connected to said second source passage between the second source passage inlet and outlet, and an outlet to feed a fluid sample; a second selectively operable valve in said second sampling passage betweeen the second sampling passage inlet and outlet; a common sampling passage connected to said sampling passage outlets; means for adjusting the fluid resistance in at least one of said source passages to compensate for normal variations in fluid characteristics in the fluid from the sources; means for creating a substantial pressure drop between each of said sampling passage inlets and source passage outlets so that fluid from pressurized sources will prefer to flow into said common sampling passage when its associated valve is open instead of through its source passage outlet; said pressure drop creating means including a fixed, nonadjustable fluid throttling orifice in each of said first and second source passages between their respective outlets and sampling passage inlets.

Claim 7

The device of claim 4, wherein said fluid resistance adjusting means includes a metering screw threaded into each of said first and second source passages, to affectively adjust the cross-sectional area of their respective outlets, between their respective orifices and outlets.

Claim 8

A sampling valve to be used in a system wherein selective samples of a fluid are to be taken from separate fluid sources, comprising: a first source passage having an inlet to be connected to a first source of fluid and an outlet; a second source passage having an inlet to be connected to a second source of fluid and an outlet; a common exhaust passage being connected to said outlets; a first sampling passage having an inlet connected to said first source passage between the source passage inlet and outlet, and an outlet to feed a fluid sample; a first selectively operable valve in said first fluid sampling passage between the sampling passage inlet and outlet; a second sampling passage having an inlet connected to said second source passage between the second source passage inlet and outlet, and an outlet to feed a fluid sample; a second selectively operable valve in said second sampling passage between the second sampling passage inlet and outlet; and a common sampling passage connected to said sampling passage outlets; said first and second source passages including two respective straight line passages extending parallel to each other; said common exhaust passage extending into said body at right angles to said straight line passages and at least partially intersecting said straight line passages; said sampling passages including two straight line passages intersecting said source straight line passages at right angles respectively; and said common sampling passage extending parallel to said common exhaust passage.

Claim 9

A sampling valve to be used in a system wherein selective samples of a fluid are to be taken from separate fluid sources, comprising: a first source passage having an inlet to be connected to a first source of fluid and an outlet; a second source passage having an inlet to be connected to a second source of fluid and an outlet; a common exhaust passage being connected to said outlets; a first sampling passage having an inlet connected to said first source passage between the source passage inlet and outlet, and an outlet to feed a fluid sample; a first selectively operable valve in said first fluid sampling passage between the sampling passage inlet and outlet; a second sampling passage having an inlet connected to said second source passage between the second source passage inlet and outlet, and an outlet to feed a fluid sample; a second selectively operable valve in said second sampling passage between the second sampling passage inlet and outlet; and a common sampling passage connected to said sampling passage outlets; said first and second source passages including two respective straight line passages extending parallel to each other; said common exhaust passage extending into said body at right angles to said straight line passages and at least partially intersecting said straight line passages; said sampling passages including two straight line passages intersecting said source straight line passages at right angles respectively; and said common sampling passage extending parallel to said common exhaust passage.

Claim 10

The device of claim 5, wherein said sampling straight line passages include respective valve chambers and lines joining said valve chambers and respective ones of said source straight line passages; and said common sampling passage being parallel to said common exhaust passage and intersecting each of said valve chambers.

Claim 11

The device of claim 6, including a one piece valve body having therein all of said source, sampling and common passages; wherein said valve cHambers are first blind bores extending from one face of said body; said joining lines are parallel bores smaller in diameter and extending from the bottom of respective ones of said valve chamber bores and into respective ones of said source straight line passages; a tubular member sealingly received within each of said joining lines and extending outwardly into respective ones of said valve chamber bores; said valve means including movable valve means selectively movable into sealing engagement with the terminal end of each of said tubular members within respective valve chamber bores.

Claim 12

The valve of claim 7, wherein said movable valve means further includes a single resilient sheet sealing all of said valve chamber bores and movable between a first position sealingly engaging said tube members and a second position spaced from said tubes.

Claim 13

The device of claim 8, wherein each of said movable valve means further includes a lever pivotally mounted on said valve body, means movable with said lever for engaging said resilient sheet to move said resilient sheet between its two positions in response to pivoting of said lever, cam follower means on said lever, and a cam rotatable to selectively engage said cam follower means for pivoting said lever; and further including a rotatably driving shaft drivingly carrying all of said cams.

Claim 14

The device of claim 9, including a spring means for each of said levers biasing its respective lever in one pivoted direction toward said cams; and electric switch means mounted on said valve body to be actuated by pivotal movement of said levers.

Claim 15

The apparatus of claim 9, wherein said levers are L-shaped with two legs; and means for pivotally mounting said levers including a U-shaped bracket for each of said levers, each of said brackets having a web portion connected to said valve body and parallel leg portions on each side of said lever, and bearing tipped set screws threadably received through each of said U-shaped bracket legs and driven into the connection point for said L-shaped bracket legs.

Claim 16

The device of claim 11, including a spring means for each of said levers biasing its respective lever in one pivoted direction toward said cams; said spring means being an L-shaped leaf spring having one of its legs engaging one leg of the respective L-shaped lever and its other leg being secured to the web portion of the respective U-shaped bracket.

Claim 17

The device of claim 12, including electric switch means mounted on said U-shaped bracket legs.

Claim 18

The device of claim 13, including a separate common cam mounted on said shaft for rotation therewith and having a plurality of cam surfaces around its periphery corresponding in number to the number of separate source passages; and a single electric switch mounted on said valve body to be actuated by each cam surface on said common cam.

Claim 19

A sampling valve to be used in a system wherein selective samples of a fliud are to be taken from separate fluid sources, comprising: a first source passage having an inlet to be connected to a first source of fluid and an outlet; a second source passage having an inlet to be connected to a second source of fluid and an outlet; a first sampling passage having an inlet connected to said first source passage between the source passage inlet and outlet, and an outlet to feed a fluid sample; a first selectively operable valve in said fluid sampling passage between the sampling passage inlet and outlet; a second sampling passage having an inlet connected to said second source passage between the second source passage inlet and outlet, and an outlet to feed a fluid sample; a second selectively operable valve in said second sampling passage between the second sampling passage inlet and outlet; and a common sampling passage connected to said sampling passage outlets; a base; a shaft rotatably mounted with respect to said base; a plurality of cams drivingly mounted on said shaft and in axially spaced relationship; a correspondiNg plurality of U-shaped brackets, each having opposed legs extending generally perpendicular to said shaft and a web portion rigidly secured with respect to said base; a corresponding plurality of levers having at one end follower means thereon for engaging respective ones of said cams and at the other end means for actuating respective ones of said valves; a corresponding plurality of set screw pairs, each pair having a set screw threadably engaged with a corresponding leg of the associated U-shaped bracket and opposed conical terminal ends extending inwardly from respective bracket legs and into opposed sides of said lever between its ends along a line spaced from said follower means and actuating means, and parallel with said shaft axis.

Claim 20

A sampling valve to be used in a system wherein selective samples of a fliud are to be taken from separate fluid sources, comprising: a first source passage having an inlet to be connected to a first source of fluid and an outlet; a second source passage having an inlet to be connected to a second source of fluid and an outlet; a first sampling passage having an inlet connected to said first source passage between the source passage inlet and outlet, and an outlet to feed a fluid sample; a first selectively operable valve in said fluid sampling passage between the sampling passage inlet and outlet; a second sampling passage having an inlet connected to said second source passage between the second source passage inlet and outlet, and an outlet to feed a fluid sample; a second selectively operable valve in said second sampling passage between the second sampling passage inlet and outlet; and a common sampling passage connected to said sampling passage outlets; a base; a shaft rotatably mounted with respect to said base; a plurality of cams drivingly mounted on said shaft and in axially spaced relationship; a correspondiNg plurality of U-shaped brackets, each having opposed legs extending generally perpendicular to said shaft and a web portion rigidly secured with respect to said base; a corresponding plurality of levers having at one end follower means thereon for engaging respective ones of said cams and at the other end means for actuating respective ones of said valves; a corresponding plurality of set screw pairs, each pair having a set screw threadably engaged with a corresponding leg of the associated U-shaped bracket and opposed conical terminal ends extending inwardly from respective bracket legs and into opposed sides of said lever between its ends along a line spaced from said follower means and actuating means, and parallel with said shaft axis.

Claim 21

The device of claim 15, including a corresponding plurality of springs, each being operatively connected to a corresponding one of said levers.

Claim 22

The device of claim 15, wherein each of said levers is L-shaped in cross section perpendicular to the axis of said shaft; and separate electrical switch means mounted with respect to said base to be actuated by pivotal movement of one leg of each L-shaped lever.

Claim 23

A multiple valve, comprising: a valve block having at least two open ended valve chambers therein; a stationary valve seat in each of said valve chambers; a single resilient sheet extending over and covering all of said valve chambers; means to clamp said resilient sheet to said block for sealing the open ends of said valve chambers and sealing said valve chambers with respect to each other; separate movable valve means on the opposite side of said resilient sheet from each of said valve chambers for independently holding said sheet in tight sealing engagement directly with respective ones of said stationary valve seats in one valve closed position and being movable away from said valve chambers to a second valve open position spaced from said one position; a shaft rotatably mounted with respect to said block; a plurality of cams drivingly mounted on said shaft and in axially spaced relationship; a corresponding plurality of U-shaped brackets, each having opposed legs extending generally perpendicular to said shaft and a web portion rigidly secured with respect to said block; a corresponding plurality of levers having at one end follower means thereon for engaging respective ones of said cams and at the other end said movable valve means for actuating respective ones of the valves; a corresponding plurality of set screw pairs, each pair having a set screw threadably engaged with a corresponding leg of the associated U-shaped bracket and opposed conical terminal ends extending inwardly frOm respective bracket legs and into opposed sides of said lever between its ends along a line spaced from said follower means and movable valve means, and parallel with said shaft axis.

Claim 24

A multiple valve, comprising: a valve block having at least two open ended valve chambers therein; a stationary valve seat in each of said valve chambers; a single resilient sheet extending over and covering all of said valve chambers; means to clamp said resilient sheet to said block for sealing the open ends of said valve chambers and sealing said valve chambers with respect to each other; separate movable valve means on the opposite side of said resilient sheet from each of said valve chambers for independently holding said sheet in tight sealing engagement directly with respective ones of said stationary valve seats in one valve closed position and being movable away from said valve chambers to a second valve open position spaced from said one position; a shaft rotatably mounted with respect to said block; a plurality of cams drivingly mounted on said shaft and in axially spaced relationship; a corresponding plurality of U-shaped brackets, each having opposed legs extending generally perpendicular to said shaft and a web portion rigidly secured with respect to said block; a corresponding plurality of levers having at one end follower means thereon for engaging respective ones of said cams and at the other end said movable valve means for actuating respective ones of the valves; a corresponding plurality of set screw pairs, each pair having a set screw threadably engaged with a corresponding leg of the associated U-shaped bracket and opposed conical terminal ends extending inwardly frOm respective bracket legs and into opposed sides of said lever between its ends along a line spaced from said follower means and movable valve means, and parallel with said shaft axis.

Claim 25

Th device of claim 18, including a corresponding plurality of springs, each being operatively connected to a corresponding one of said levers.

Claim 26

The device of claim 18, wherein each of said levers is L-shaped in cross section perpendiculr to the axis of said shaft; and separate electrical switch means mounted with respect to said base to be actuated by pivotal movement of one leg of each L-shaped lever.