Abstract: An electrical transformer system includes an electrical transformer and a depressurization system in fluid communication with an outlet of the electrical transformer. The depressurization system may include a rupture disk housing assembly, a rupture disk cartridge, and a removable cover. The housing assembly may include a container having an opening and cavity to receive the cartridge and first and second flanges to connect to duct piping of the transformer. The removable cover may enclose the opening of the housing assembly. The cartridge may include a rupture disk secured between first and second disk support plates. The cartridge may be pre-assembled outside the housing assembly. The cartridge may be removed from and/or installed in the housing assembly through the opening. The rupture disk may be inspected, serviced, and/or replaced without disconnecting the housing assembly from the duct piping.

Abstract: A knuckle and support structure for a reverse buckling rupture disc is described.

Abstract: A line, in particular to a line of a blood tubing system or of a blood bag system, having a closing member blocking the line passage, with the closing member being formed by a plastically deformable closing body which is arranged in the line and which closes the line in at least one state and with at least the portion of the line in which the closing body is located being made flexible.

Abstract: A bursting disc assembly has a bursting disc and an outlet side support ring. In order to provide a safety warning, when the bursting disc assembly is incorrectly installed in a reversed orientation, the outlet side ring has a passage through it from its radial interior to its exterior, in the form of a full thickness slot or a groove. In an incorrect installation, this passage provides a leak path from the pressurized side of the disc.

Abstract: A tear out test plug for plumbing installations includes a cylindrical body having a peripheral sidewall, a closed end and an open end. A positioning flange extends outwardly from the peripheral sidewall at the open end. An end wall closes the closed end. A frangible strip extends from the open end, down the peripheral sidewall, and across at least a portion of the end wall.

Abstract: A tear out test plug for plumbing installations includes a cylindrical body having a peripheral sidewall, a closed end and an open end. A positioning flange extends outwardly from the peripheral sidewall at the open end. An end wall closes the closed end. A frangible strip extends from the open end, down the peripheral sidewall, and across at least a portion of the end wall.

Abstract: An aft closure assembly manufactured from two separate and distinct pieces made from different materials is provided for a rocket motor case. The aft closure assembly includes at least a retaining ring piece made from a first material similar to or having a coefficient of thermal expansion similar to that of the motor case. The aft closure assembly includes a blast tube and closure piece that can be manufactured from a second material that does not need to be similar to nor have a coefficient of thermal expansion similar to the motor case and retaining ring piece. This is possible because the blast tube and closure piece includes a face seal that seals against a face of the retaining ring.

Abstract: A rupture disk assembly for use in a pressurized fluid passageway within an application environment having a temperature operational range. The disk assembly includes a cylindrical one-piece disk consisting of unimpregnated graphite, a single bore extending partway into the top surface of the disk, a casing, and a metallic layer overlaying the planar bottom surface of the disk. The disk assembly has a particular burst pressure that is generally temperature insensitive over essentially the entire temperature operational range. The temperature operational range may be from about ?425° F. to about 900° F. The burst pressure may have a tolerance of about +/?5% over the temperature operational range.

Abstract: A burst disk assembly has a burst disk which is interposed within the high pressure relief vent of a superconducting magnet. The burst disk is a composite design constructed of a solid carbon graphite center surrounded by an integrally formed stainless steel ring. A captured burst disk flange insures proper placement and seating of the burst disk during replacement and supports the burst disk so as to prevent it from falling or dropping out of the assembly during replacement of the ruptured burst disk. A deformable gasket contiguous to the burst disk seals the burst disk to the captured burst disk flange when the disk and the flange are pressed together. Attachment bolts are used to provide even application of pressure along the face of the burst disk and the captured burst disk flange.

Abstract: The present invention is concerned with a cleavage type safety valve installed on a metal vessel for affording the explosion-proof function. The safety valve is installed on a small-sized cell vessel which remains hermetically sealed during the normal operation but instantly releases the pressure in the inside of the vessel if, due to abnormalities, such as overcharging, the pressure is increased and reaches a prescribed value to prevent explosion or deformation of the cell vessel. The metal foil type safety valve by the cold pressure welding of the present invention cold welds the metal foil for sealing the air vent hole in the metal vessel. If the internal pressure in the vessel reaches the prescribed value, the metal foil is cleft to form an opening in the vessel to release the internal pressure.

Abstract: A rupture disk which is welded or brazed to a relatively massive or robust ring member integrally attached to the remainder of the body by an isolating member of reduced cross-sectional thickness. The upper part of the tubular body is attached by welding or brazing to the lower half of the body at a flange which extends outwardly from the mounting member. This eliminates the need for compressive forces to effect a seal, and one or two sources of potential leakage and setpoint shift (assembly force) are thereby eliminated.

Abstract: A polymer rupture disk in the form of a cartridge or capsule that can be inserted in a fluid line fixture as a replaceable unit to establish a predetermined rupture pressure or safety pressure for that particular pressurized container.