PRESSURE RELIEF VALUE
A pressure-relief valve device, especially for use with hydraulic props, has a main hollow housing containing a guide piece with a through bore in which a cylindrical shank of a valve or piston member is received. The shank is slidable within the guide piece bore and is held, by a spring force appli...
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Format | Patent |
Language | English |
Published |
22.03.1984
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Subjects | |
Online Access | Get full text |
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Abstract | A pressure-relief valve device, especially for use with hydraulic props, has a main hollow housing containing a guide piece with a through bore in which a cylindrical shank of a valve or piston member is received. The shank is slidable within the guide piece bore and is held, by a spring force applied to a head thereof, in a closed position. The shank has a blind axial bore leading through five, or preferably six radial borings to outlets at is periphery. An O-ring held in a groove in the wall of the guide piece bore engages on the peripheral surface of the shank. An elastic deformable thrust disc is located in the groove and contacts a wall of the groove adjacent the head of the valve member as well as the O-ring. The thrust disc serves to prevent creep of the O-ring during use whereby excess fluid pressure acts to displace the valve member against the restoring force of the spring to move the outlets of the shank of the valve member passed the O-ring to allow pressure-relief. |
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AbstractList | A pressure-relief valve device, especially for use with hydraulic props, has a main hollow housing containing a guide piece with a through bore in which a cylindrical shank of a valve or piston member is received. The shank is slidable within the guide piece bore and is held, by a spring force applied to a head thereof, in a closed position. The shank has a blind axial bore leading through five, or preferably six radial borings to outlets at is periphery. An O-ring held in a groove in the wall of the guide piece bore engages on the peripheral surface of the shank. An elastic deformable thrust disc is located in the groove and contacts a wall of the groove adjacent the head of the valve member as well as the O-ring. The thrust disc serves to prevent creep of the O-ring during use whereby excess fluid pressure acts to displace the valve member against the restoring force of the spring to move the outlets of the shank of the valve member passed the O-ring to allow pressure-relief. |
Author | WALTER WEIRICH |
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Notes | Application Number: AU19800056577 |
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PublicationDateYYYYMMDD | 1984-03-22 |
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PublicationDecade | 1980 |
PublicationYear | 1984 |
RelatedCompanies | GEWERKSCHAFT EISENHUTTE WESTFALIA |
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Snippet | A pressure-relief valve device, especially for use with hydraulic props, has a main hollow housing containing a guide piece with a through bore in which a... |
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SubjectTerms | ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS |
Title | PRESSURE RELIEF VALUE |
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