Abstract: A clamp assembly to secure a yoke to a valve body of a knife gate valve is provided. The clamp assembly can include a bolt that is configured to extend through a first bushing, a first spring member, a first side wall of the yoke, the valve body, a second side wall of the yoke, a second spring member, and a second bushing. The clamp assembly can be configured to pin the yoke to the valve body, apply a pressure-containing preload to the valve body via the first and second bushings, and compress the first spring member between the first bushing and the first side wall of the yoke and the second spring member between the second bushing and the second side wall of the yoke.

Abstract: The disclosed spool valve is used especially in conveying systems comprising conveying pipes (6, 7) and includes a spool (1) which allows the conveying cross-section of the conveying pipe (6, 7) to be closed. The spool (1) has at least one through-hole (33). The conveying pipe (6, 7) is sealed from the spool (1) by at least one sealing ring (27, 28). Said sealing ring (27, 28) surrounds the conveying line (6, 7) and includes a washer-shaped sealing portion. Said sealing portion lies flat on the spool and seals under the effect of the difference between the pressure in the conveying line (6, 7) and the ambient pressure.

Abstract: A swinging device for spectacle blinds where the swinging device includes a case having a pair of side members connected to a bottom member and first and second shafts rotatably connected to the case. A first gear mounted on the first shaft engages a second gear mounted on the second shaft. A drive handle assembly is connected to the first shaft to impart rotation of the first shaft. A spectacle blind holder is mounted on an end of the second shaft. The spectacle blind holder is arranged and designed to securely hold the spectacle blind. A base assembly has an upper portion connected to the case and a lower portion for mounting to piping.

Abstract: The invention is an improved line blind valve which provides absolute positive flow shut-off in piping systems. It uses fluid pressure to separate the seal surfaces while ensuring the end connections do not move relative to each other. Once separated, the blind can be moved easily into either the closed blind position or the open full flow position. The assembly consists of an outer housing, two end pipes and a sliding carrier that allows a blind to be either inserted into the flow or removed by pivoting the blind about a pin.

Abstract: A gate valve is provided with a flapper mechanism that is disposed in the main body of the valve and automatically works to seal and isolate the main body of the valve from a bonnet. The bonnet is isolated without any manual function or operation. When the flapper valve is in a closed position, the bonnet, gate and gate actuating mechanism can be removed from the gate valve body without isolating the gate valve. This enables the bonnet and associated components to be repaired or replaced while water or fluid under pressure continues to flow through the main body of the gate valve.

Abstract: Embodiments of the present invention relate generally to multi-port orbital valves for use in controlling the direction of fluids and mixed media, and find particular use in connection with toilet systems, such as vacuum toilet systems.

Abstract: A multipartite mechanical press is presented, preferably bipartite for flanged connections that allows the handling of flanged connections on pipes for addition/removal of elements to/from the line, such as filters, plates, flow regulators, measurement elements, orifice plates and valves. The multipartite design allows a totally mechanical installation, without the need for any type of modification to the pipeline, or by destructive procedures of removal or addition of material. For installation of the multipartite mechanical press requires the existence of flanged connections in the pipel in question. The operation of the press is totally manual, i.e. operation does not require the use of mechanisms activated by any electrical, pneumatic, fuel-based, etc. means.

Abstract: A dual chamber orifice fitting including a first chamber maintained in fluid communication with a pipeline and a second chamber maintained in fluid communication with the first chamber. The fitting includes sealing member formed as an eccentric plug member that is selectively rotatable from a first position wherein the sealing member seals the first chamber from the second chamber, and a second position wherein the sealing member permits the first chamber to be placed in fluid communication with the second chamber. The sealing member includes a curved sealing surface having a pocket recessed therein for containing a non-metallic insert seat. The non-metallic insert seat sealingly engages a seat plate when the sealing member is in the first position. A retainer plate retains the insert seat in the recessed pocket.

Abstract: Apparatus and methods for operating a dual chamber orifice fitting. The dual chamber orifice fitting comprises a body having a lower chamber and a top having an upper chamber. An aperture connects the upper chamber to the lower chamber. A closure member is pivotally mounted to the fitting and pivots about a first axis between a first position and a second position. A pivot arm is rotatably mounted to the body and engages the closure member so that rotation of the pivot arm about a second axis pivots said closure member about the first axis between the first and second positions.

Abstract: A fluid-crossing gate for a pipeline which is inserted into the interior of a pipeline through a hole punched at a certain portion of the pipeline for crossing the flow of a fluid, is disclosed, which comprises a cylindrical body which is engaged to the pipeline; an operation shaft which is positioned in the interior of the body and moves up and down; a joint unit which is positioned at a lower side of the operation shaft and is bent at a right angle; and a crossing unit which is engaged to a lower side of the joint unit and is inserted into the interior of a pipeline through a hole as the operation shaft moves down and is mounted in the interior of the pipeline as the joint unit is bent for thereby blocking the flow of a fluid in the interior of the pipeline.

Abstract: Apparatus for blocking the bore of a pipe (1) comprises a plurality of elongate shutter member (15-17) pivotably mounted to an elongate support member (3/3a) for insertion through a pre-drilled aperture (8) in the pipe wall. Actuating means (14) are provided for pivoting the shutter members (15-17) from an insertion configuration in which they substantially aligned with said support member (3a) and deployed configuration in which they are fanned out across the bore of the pipe (1). Each shutter member (15-17) is pivoted about a point (9) located towards one end thereof and towards the insertion end of the support member (3a) so as in use to lie between the axis of the bore of the pipe and the wall of the pipe (1) opposite the location of said aperture.