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Class 137/315.29 - Gate valve


Subclass of Class 137 - Fluid handling
Definition: Subject matter wherein the valve comprises essentially a
No. of patents: 28
Last issue date: 11/04/2008


NumberTitleIssue Date
7445019Gate valve having service position
A gate valve including a valve housing defining a valve chamber having an opening therethrough along a flow path, a gate support supported within the valve housing between a closed position in the flow path, an open position outside of the flow path, and a service p...
11/04/2008
7357373Pilot-type two-port valve
A two-port valve includes a valve part configured to open and close a valve seat in a liquid flow path connecting a first port and a second port by a valve member and a pilot-type valve driving mechanism to open and close the valve member through a rod. The rod pass...
04/15/2008
7338089Pipe interruption fitting
A pipe interruption fitting having a flange is removable after pipe maintenance work has been completed. The fitting includes an upper reinforcing plate, an inner surface of which has a curvature corresponding to an outer surface of the pipe, and a vertical pipe wel...
03/04/2008
7137974Sterile connector
A sterile to sterile connection device comprising a connector and one or more coupling devices. The connector has body portion which has two openings sealed from the environment so as to form a sterile environment within the connector. At least one of the openings b...
11/21/2006
7008532Chromatographic device having an elongate rod and method of forming and chromatographic device
A chromatographic device comprises a chromatographic tube, a chromatographic medium, a piston assembly, an elongate rod, and a threaded member. The piston assembly is within the tube and is positioned generally between a first end of the tube and the chromatographic...
03/07/2006
6997041Dual slide gate valve and method for using same
A method and device for pressure testing a pipe line is provided wherein a fitting is inserted into the pipeline by inserting male ends of the pipeline into female ends of the fitting to define a flow path through the fitting extending along a longitudinal axis. The...
02/14/2006
6983759Valve and method for repairing a valve under pressure
A valve includes a valve body with a hollow valve body interior and an opening-defining portion that defines an access opening. The opening-defining portion is arranged as a connection-facilitating structure for facilitating the fluid-tight connection of a separate ...
01/10/2006
6843889Coke drum bottom throttling valve and system
A coke drum bottom de-heading system having an internal shroud enclosure and a shroud end cap opened by a flange to a coke bottom de-heading valve capable of accepting the end of a gate valve upon actuation. Acting in coordination with the shroud enclosure to preven...
01/18/2005
6679283Valve inspection chamber
A valve inspection chamber includes a housing having a vertical inspection and valve retrieval opening. A valve cassette is provided which includes a frame and a valve member movable relative to the frame between an open position and a closed position. A ...
01/20/2004
6050541Pneumatic valve actuator assembly
A pneumatic actuator and method for a gate valve are disclosed which provide for stepped guide connections between upper and lower cylinder plates for a pneumatic cylinder to thereby automatically centralize and locate the relatively heavy pneumatic cylin...
04/18/2000
5878769Maintenance method and maintenance kit for a gate valve
The maintenance method is for a gate valve. The method comprises the steps of closing the gate valve; removing sequentially the hand wheel, the gland flange, the gland and the packing from the stem of the gate valve; mounting a first clamp onto the gate v...
03/09/1999
5743288Valve having provision for replacing stem packing while the valve is under pressure
A valve, having provision for replacing stem packing while the valve is under pressure, has a valve body with a flow passageway through it, a gate that is vertically positioned to open and close the passageway, a stem extending upwardly from the valve bod...
04/28/1998
5312087Low torque back seating stem for gate valve
A gate valve adapted for stem back seating has a stem and bonnet assembly with a rotatable bearing ring to which the stem is releasably fixed during normal gate opening and closing operations. During back seating, the stem is released from the bearing rin...
05/17/1994
5038817Narrow accessway liquid sewage pump remotely operable multi-part quick connect/disconnect slide coupling
A narrow accessway sewage pump remotely operable, multi-part, quick connect/disconnect slide coupling comprising a fixed portion that forms a first part of a slide-together, bayonet-type coupling with a movable portion forming a second part of the couplin...
08/13/1991
4909272Gate valve
An improved gate valve is described. The valve utilizes a flat gate having a beveled edge which slices across a central passage in the valve housing when the valve closes. A manifold is disposed in the passage to direct a purge stream of fluid across the ...
03/20/1990
4800917Fluid actuated gate valve assembly
There is disclosed a non-electric fluid actuated gate valve assembly of the type intended for interposition between a static structure and a municipal sewer line to prevent sewer back-up in flood conditions formed by an enclosed chamber having a water inl...
01/31/1989
4744386Modular hydraulic actuator
A surface safety valve hydraulic actuator of modular construction. The actuator includes separately installable, removable, and interchangeable wirecutting and non-wirecutting spring modules, used with the same hydraulic cylinder and bonnet. The bonnet is...
05/17/1988
4671312Wireline cutting actuator and valve
Disclosed is a wireline cutting actuator and valve assembly. The valve includes a valve body having a gate reciprocatingly mounted therein. The gate has a stepped bore. The actuator includes a bonnet adapted for connection to the valve body and an actuato...
06/09/1987
4671313Slide valve
This is a new slide valve arrangement, it includes a housing having a longitudinal axis and a disc valve or gate movable by external hydraulic or mechanical actuator. The gate slides along a first surface of a guide member. There is a throat member throug...
06/09/1987
4615506Slide valve
This is a new slide valve arrangement. It includes a housing having a longitudinal axis and a disc valve or gate movable by an external hydraulic or mechanical actuator. The gate slides along a first surface of a guide member. There is a throat member thr...
10/07/1986
4561471Washing machine rinse-water diverter valve
A dump valve adapted for use with automatic clothes washing machines provides an optional water conservation feature which allows the user to divert draining rinse water from the normal sewer drain port to an alternate drain port. The optional water conse...
12/31/1985
4456026Control device particularly useful as manual slide valve
A manual slide valve comprises a housing having a valve slide slidable within the housing. The housing is constituted of two sections each including projections and recesses cooperable with each other and with the slide valve such that when the slide valv...
06/26/1984
4423748Emergency shut down device
An emergency shut down device for a gate valve utilizes a pre-assembled spring cartridge assembly which includes a container and a compression spring pre-loaded therein. Suitable openings are provided in the end plates of the cartridge to permit the remai...
01/03/1984
4408627Exhaust brake valve unit
The invention provides an automatic exhaust brake valve unit having a hollow body with an exhaust gas passage extending therethrough and a valve closure member movable in the hollow body between a closed position in which it closes the passage, and an ope...
10/11/1983
4231389Removable operator for gate valves
A pedestal extends upwardly from the body of a gate valve housing in a straddling relationship to the gate. An operator, detachably attachable to the pedestal, includes a hand wheel operating through a pinion gear to impart translatory movement to a verti...
11/04/1980
4220269Slide gate nozzle for a casting vessel
A slide gate nozzle for a slide gate carried by a closure frame which includes two independent arms pivotally connected with a casting vessel for slidably moving the slide gate with respect to the casting vessel and for moving the slide gate away from the...
09/02/1980
4141378Pressure pipeline structure and method
This invention relates to a pressure/vacuum system apparatus; one part of such apparatus being an economical fitting, another part being operating mechanism, another part being a means to join such fitting to such operating mechanism in a substantially fl...
02/27/1979
3993284Connection of actuator cylinder housing to valve bonnet
A mount for securing an actuator cylinder on a gate valve, wherein the valve has a stem extending through a sleeve on the valve bonnet and the actuator cylinder has a collar mounted on the sleeve. The actuator cylinder is mounted such that it will not rot...
11/23/1976
 
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