Abstract:
An expansion joint is used to accommodate changes in length of above- ground pipe lines due to thermal expansion. A tube is surrounded by a ring attached to a sleeve. One end of the tube is attached to a pipe of the pipeline, one end of the sleeve is attached to another pipe of the pipe line. The tube and the ring and sleeve are movable axially relatively to one another when the pipe line expands or contracts linearly. A seal between the ring and the tube ensures fluid tightness of the joint.
Abstract:
A coupling for joining pipe segments together is disclosed. The coupling is derived from a standard fitting and has a housing with a socket and an expanded region adjacent to the socket. Three shoulders are positioned within the expanded region. A sealing member and two support washers are positioned within the expanded region, each engaging a shoulder. A retainer is positioned in the expanded region between the two support washers. A lip, positioned at the end of the expanded region, extends radially inwardly and captures the sealing member, washers and retainer within the coupling. The retainer has a plurality of radial teeth angularly oriented to engage a pipe and prevent its removal from the coupling. One of the washers is kept in spaced relation from the other washer by a shoulder to prevent contact with the retainer upon assembly which may otherwise inhibit the teeth engaging the pipe.
Abstract:
A valve actuator is disclosed for use with short throw valves. The actuator includes a plate perpendicular to the valve stem that has a slot formed of regions having different radii of curvature centered on the valve stem. An eccentric cam is attached to a handle mounted on the valve stem. The cam extends through the slot and is rotatable for positioning at a radius corresponding to the radius of the different slot regions. When the cam is rotated so that it may traverse a slot region, the handle can be turned to move the valve closing member through an angle subtended by the slot region. This permits the valve to be opened or closed in a step-wise fashion and prevents rapid opening and closing of the valve that can cause a water hammer effect.
Abstract:
A sprinkler having a design such that they can be arrayed where the coverage of each exceeds 80 square feet - preferably less than 200 square feet in extra hazard or high piled storage environments up to ceiling heights of 25 feet or greater, including ceiling heights of approximately 30 feet or greater and being adapted to control through the maintenance of the heat release rate for the prescribed period of time established by NFPA- 13 standards for what are termed "Extra Hazard" and "High Piled Storage" occupancy in which sprinklers preferably having a K factor of 18-40 through the selective combination of pressure and trigger-speed provide sufficiently large drops of water to permit the same to maintain sufficient size and density after contacting the structural members generally encountered in warehouse-type facilities to be able to penetrate the fire plume. Specifically, in its preferred embodiment if the pressure is 7-10 psi, a diagonal line emanating from the center of the deflector to the edge of the obstruction (A) is greater than 3 times the height or 3 times the width of the obstruction.
Abstract:
A valve is disclosed having a valve closing member that divides the valve bore into passageways of unequal cross sectional areas when in an open position. A venturi is positioned within the valve bore upstream of the valve closing member. The throat of the venturi may be within one pipe diameter of the valve closing member. The venturi is offset from the bore centerline so as to align with the larger of the two passageways. Turbulence is reduced allowing more accurate pressure measurements to be made within the venturi yielding more accurate determination of volumetric flow rates.
Abstract:
A deformable mechanical pipe coupling is disclosed. The coupling is formed from an arcuate band that surrounds and defines a central space. The band has first and second ends in facing relation. arcuate surfaces that engage outer surfaces of the pipe elements extend lengthwise along the band. The arcuate surfaces have radii of curvature greater than the radii of curvature of the pipe element outer surfaces, allowing pipe elements to be inserted within the central space. The band has adjustably tightenable connection members mounted at each end. When the connection members are tightened, the ends are drawn toward one another, and the arcuate surfaces on the band deform and conform to the radius of curvature of the outer surfaces of the pipe elements.
Abstract:
A valve having a valve closing member (16) rotatably supported on one or more valve stems (22) which are positional infinitely adjustable is disclosed. The valve has a valve body defining a bore (14) with an upper passageway extending from the bore. A valve stem (22) extends coaxially through the passageway and rotatably supports the valve closing member in the bore. A cartridge (24) is coaxially located within the passageway between the valve body and the stem. The cartridge captures the valve stem and engages the passageway via screw threads (30) allowing for infinite positional adjustment. The cartridge also houses bearings (38) for rotation of the stem and seals (40, 42, and 44) for sealing the passageway. The valve body may have a second passageway coaxially aligned with the first passageway in which a second valve stem is located. The second stem (60) engages the passageway via screw threads allowing for infinite positional adjustment. The adjustable stems allow the valve closing member to remain perfectly centered within the bore for maximum valve operational life.
Abstract:
A pipe element has a circumferential shoulder at one end. The shoulder has an outer diameter greater than the outer diameter of the pipe element. A groove is positioned adjacent to the shoulder. The groove has a floor surface with an outer diameter less than the outer diameter of the pipe element. A bead is positioned contiguous with the groove. The bead has an apex with an outer diameter greater than the outer diameter of the pipe element. A combination of roller tools is used to cold work pipe elements and impart a desired shape to the sidewall in one method of manufacture. In another method, a spin forming tool is revolved in an orbit of increasing diameter within the pipe element captured within a die.
Abstract:
A fire suppression system is disclosed. The system includes a source of pressurized gas and a source of pressurized liquid. At least one emitter is in fluid communication with the liquid and gas sources. The emitter is used to establish a gas stream, atomize and entrain the liquid into the gas stream and discharge the resulting liquid-gas stream onto the fire. A method of operating the system is also disclosed. The method includes establishing a gas stream having first and second shock fronts using the emitter, atomizing and entraining the liquid with the gas at one of the two shock fronts to form a liquid-gas stream, and discharging the stream onto the fire. The method also includes creating a plurality of shock diamonds in the liquid-gas stream discharged from the emitter.
Abstract:
A coupling assembly is disclosed for joining pipe elements to one another end-to-end. First and second rings are attached to an end of each pipe element. Each ring has an outwardly facing surface with a groove which receives a sealing member. A band is positioned in overlying relation surrounding the rings when the pipe ends are arranged in end-to-end relationship. The band has an inwardly facing surface engaged with the sealing members. The band also has oppositely disposed end faces. End plates are attached to each end face. The end plates project radially inwardly in overlapping engagement with the rings to retain the pipe elements in end-to-end relation within the band.