CA2093539A1 - Knife Valve - Google Patents

Knife Valve

Info

Publication number
CA2093539A1
CA2093539A1 CA 2093539 CA2093539A CA2093539A1 CA 2093539 A1 CA2093539 A1 CA 2093539A1 CA 2093539 CA2093539 CA 2093539 CA 2093539 A CA2093539 A CA 2093539A CA 2093539 A1 CA2093539 A1 CA 2093539A1
Authority
CA
Canada
Prior art keywords
blade
stem
seat
valve
angular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2093539
Other languages
French (fr)
Other versions
CA2093539C (en
Inventor
Renald Roussel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Velan Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2093539A1 publication Critical patent/CA2093539A1/en
Application granted granted Critical
Publication of CA2093539C publication Critical patent/CA2093539C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Sliding Valves (AREA)

Abstract

KNIFE VALVE
Abstract 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.
The body includes a bonnet with the stem extending therethrough and with circular packing rings being disposed therein around the stem. The valve seat is located on a first side of the blade and in operative proximity thereto. The stem includes a lower head portion which defines an angular surface, whereas a top portion of the blade defines a slot forming an angular surface parallel to the angular surface of the stem head. The stem head is engageable in the slot with the angular surfaces thereof being in sliding contact. Therefore, when the blade is in its closed position, a longitudinal force exerted by the stem on the blade is transferred into a lateral force oriented towards the seat, thereby forcing the blade against the seat in a tight bidirectional seal under a positive torque. Angular lugs provided on a lower second side of the blade cooperate with tapered lower edges of the blade to also urge the blade against the seat in its closed position. A bypass arrangement is provided in the bonnet around the stem for communication with the valve passage to prevent the pulp fibers from accumulating in the bonnet and jamming the stem. A resilient seat is mounted to the valve body on the first side of the blade.
CA 2093539 1992-06-23 1993-04-06 Knife valve Expired - Fee Related CA2093539C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US90312592A 1992-06-23 1992-06-23
US903,125 1992-06-23

Publications (2)

Publication Number Publication Date
CA2093539A1 true CA2093539A1 (en) 1993-12-24
CA2093539C CA2093539C (en) 1995-01-17

Family

ID=25416987

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2093539 Expired - Fee Related CA2093539C (en) 1992-06-23 1993-04-06 Knife valve

Country Status (1)

Country Link
CA (1) CA2093539C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11543036B1 (en) 2021-06-23 2023-01-03 1441599 Alberta Ltd. Isolation knife gate valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11543036B1 (en) 2021-06-23 2023-01-03 1441599 Alberta Ltd. Isolation knife gate valve

Also Published As

Publication number Publication date
CA2093539C (en) 1995-01-17

Similar Documents

Publication Publication Date Title
AU558604B2 (en) Pressure relief valve
IE860712L (en) Valve seal for pressure relief valve
CA2170630A1 (en) A device and a method for blocking a liquid flow through a pipe in one direction
US4172469A (en) Soft seat check valve
CA2263822A1 (en) Drinking receptacle covers
WO2004038316B1 (en) Coke drum bottom throttling valve and system
EP0376502A3 (en) Method for changing the characteristic curve of a regulation valve under pressure and a regulation valve
EG23087A (en) Pressure cooker
ES8302845A1 (en) Cooling means for the cutter of a coal cutting machine.
GB2137736A (en) Fluid valve
WO1999039986A1 (en) Fuel cap
AU3022389A (en) Wellhead valve
US20140299800A1 (en) Gas Bottle Valve Provided With A Flywheel Controlling A Residual-Pressure Valve And A Stop Valve
CA2050887A1 (en) Valve device
CA2093539A1 (en) Knife Valve
CA1236072A (en) Wedge type gate valves
ES2122830A1 (en) rotary valve
CN2401739Y (en) Stop valve
CA2067270A1 (en) Sprayer Shutoff Valve
GB2196414A (en) Fluid cut-off valves
EP0819474A3 (en) Control device for a fluid, such as water
US4520995A (en) Dished disc free-disc butterfly valve
EP0846901A3 (en) Shut-off device for a filling installation of a pressure container
CN211820754U (en) Shutoff valve capable of being unfolded downwards
GB8901950D0 (en) Pressurised containers

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed