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7543797 |
Valve device
A valve device is provided. The valve device of the present invention includes a planetary component and two valve plates. The two valve plates are disposed on a hole portion of the planetary...
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7341237 |
Valve mechanism for a vacuum valve
A valve mechanism having at least one movable valve member for sealing of a valve opening in a housing. Movements of the individual movable valve members are accomplished essentially parallelly to,...
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7100892 |
Non-rubbing gate valve for semiconductor fabrication apparatus
A gate valve includes a valve main body having a gate valve body attached to a valve rod; a movement operation mechanism that moves the valve rod in a direction along an axis of the rod up to a...
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6474622 |
Gate valve
A pendulum gate valve incorporates an improved power transmission device for transmitting the movement of a pivot arm of the valve to a valve disk that selectively closes the valve. The power...
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6056267 |
Isolation valve with extended seal life
A gate valve assembly having a primary and secondary seating surface for preventing process fluids from contacting the seals of the valve is provided. Additionally, a purge gas inlet can be...
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5884899 |
Half profile gate valve
A gate valve (110) includes a valve housing (112), valve plate (130), and linkage assembly (134, 136, 140). An actuator assembly (124) includes a cylinder component (150) and a piston component...
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5881998 |
Half profile slot valve
A slot valve (10) comprising a valve housing (12) defining a valve chamber (14) and having a valve gate (34) movable to seal off a central opening (30). An actuator assembly (46) includes a piston...
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5662308 |
Expanding gate valve assembly
An expanding gate valve which includes a reciprocating gate supporting at least one floating segment supported on one side thereof with a wedging means between the gate and the segment for wedging...
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5626324 |
Non-sliding vacuum gate valve
A non-sliding vacuum gate valve has a valve housing with a valve opening therethrough which is opened and closed by a gate valve body moved by a valve rod. The valve rod moves with linear and...
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5295661 |
Knife valve
A knife valve comprises a body defining a valve seat and a knife blade longitudinally movable by a cylindrical stem in the body for opening and closing a lateral flow passage defined therethrough....
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5188145 |
Valve
A valve comprising a valve body (1) provided with two openings (2, 3) each fitted with a flange (4, 5) for connection to pipework, and a moving valve member (6) for closing one of the two openings...
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5168896 |
Mechanism for opening and closing valve
A valve operating mechanism produces a rotating force for causing a valve body of the valve to shift relative to a valve seat thereof, so that the valve is opened and closed. A piston of the...
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5120019 |
Valve
Valve mechanism for high-vacuum clean environments, wherein a slot aperture is closed by a gage having a lever. Motion of the gate which covers and uncovers the slot is imparted to the gate by...
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4838520 |
Valve for a vacuum enclosure
A valve for a vacuum enclosure, the valve comprising a valve body (1) which is hollow about an axis Δ and which opens out to the outside via two opposite end openings (24, 25) of the valve body,...
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4671487 |
Gate valve
A gate valve has a housing provided with a passage embraced by a valve seat for a fluid medium, carrying solid particles, to flow therethrough. A gate is provided which is connected to a rod of a...
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4560141 |
Vacuum gate valve
A vacuum gate valve includes a spreading mechanism with an actuating member extending between first and second valve plates and movable transversely of the axis of the valve, and parallelepiped...
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4538640 |
Multiposition selector valve
A multiposition selector valve of the rotary type includes a valve body having a single inlet port and a plurality of outlet ports. Fluid communication between the inlet port and any one of the...
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4524796 |
Sliding-gate valve for use with abrasive materials
The invention is a flow and pressure-sealing valve for use with abrasive solids. The valve embodies special features which provide for long, reliable operating lifetimes in solids-handling service....
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4495966 |
Separable high vacuum valve
A valve structure permitting two vacuum chambers (16, 20) to be separted or joined without breaking the vacuum in either. The structure includes first and second valves (10, 12) positioned at...
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4470576 |
Slide valve assembly
Opening and closing of a fluid flow path is controlled by a valve closure member which consists of both a sealing plate and a counter element and which is moved within its own plane to open and...
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4405113 |
Reciprocating expandable gate valve
A valve body includes flow passageways across which a gate is movable with the gate having a central block sandwiched between outer seal blocks and a gate conduit alignable with the flow...
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4378817 |
Slide valve assembly
A slide valve for high temperature, high pressure use provides for easy access to internal components for replacement or repair, and also provides for easy and secure adjustment of the valve...
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4314579 |
Gate valve
A gate valve comprising a valve body having oppositely disposed inlet and outlet ports, a valve closure member reciprocally disposed within the valve body and interposed between the inlet and...
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4306828 |
Combined flow control and isolation valve
An isolation and flow control valve in a furnace charging installation, installed in a discharge conduit of a storage hopper which may be alternately at ambient pressure for loading and furnace...
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4244557 |
High vacuum seal
A vacuum-tight closure assembly includes a valve seat; a spreadable valve plate movable into a closed position for assuming a spreaded state in which it sealingly engages the valve seat; and a...
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4238111 |
Gate valve for use with vacuum equipment
A gate valve is provided for use in conjunction with vacuum equipment in which a gate assembly is opened and closed, for example, by a pneumatic cylinder. The gate assembly is enclosed in a valve...
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4132385 |
Cam-lock water gate
A cam-lock water gate designed to control water flow from a pond, lake, field, canal or the like. A primary body member is provided with an aperture therethrough and a short section of pipe stub...
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4052036 |
Sliding device for the gas-tight and air-tight closure of a container opening or of a conduit
A gate value having a sealing plate carried by a moveable element which through the coaction of a series of balls presses the sealing plate into a flow preventing position.
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4044993 |
High vacuum gate valve
Gate valve having a closure member mounted on a swinging arm pivotally mounted for movement transversely of the axis of the valve openings. A wedge member carried by the arm drives the closure...
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4036260 |
Gate valve with expandable and contractable closure member
A valve comprising: a housing having an opening therethrough around which is provided a seat; a closure assembly for blocking flow through the opening and for sealing engagement with the seat; and...
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3743244 |
TOP AND BOTTOM GATE VALVE FOR REMOVING AND REPLACING RENEWABLE SEATING ELEMENTS
A gate valve designed so as to provide for removal and replacement of renewable seat elements without necessitating the disconnection of the valve body from piping or other associated equipment,...
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3695578 |
GATE VALVE INCLUDING FLUID OPERATED LOCKING DEVICE
This invention relates to a gate valve and, more particularly, to fluid flow control apparatus having a sliding gate operated by a hydraulic actuator and an arresting mechanism for determining the...
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3554486 |
HIGH VACUUM VALVE
A valve for use in ultra high vacuum apparatus comprises a valve chamber located at a right angle to the vacuum line containing a gate and a bar cam mounted on a drive shaft communicating with a...
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3488034 |
HIGH DUTY CONTROL AND STOP VALVES
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3467355 |
BALL VALVE WITH IMPROVED RESILIENT CLOSING MEANS
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3461904 |
GATE VALVE
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3401527 |
Sluice gate
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3397862 |
Wedge gate vacuum valve mechanism with coated seat seal
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3368792 |
Gate stop valve
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3352535 |
Cam actuated gate valve
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3351317 |
Irrigation ditch gate valve
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3334858 |
Swinging disc valves with supplemental operator
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3330530 |
Sluice valve operating mechanism
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3321174 |
Gate slide valve
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3273851 |
Ball valve having urging means acting normal thereto
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3264718 |
Method for making ball valves
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3262672 |
Large port gate valve
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3237916 |
Disc valve
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3224382 |
Sliding gate sealing means assemblies
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3216694 |
Large high vacuum valve
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