Low-temperature spherical valve
A ball valve and low-temperature technology, which is applied in the direction of valve devices, cocks including cut-off devices, engine components, etc., can solve the problems of pre-tightening force reduction, leakage, and sealing performance reduction, so as to reduce opening torque, improve sealing reliability, and seal Effect of Reliability Improvement
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[0015] The present invention will be described in further detail below through specific examples.
[0016] Such as figure 1 As shown, a low-temperature ball valve includes a main valve body 7, a side valve body 2, a ball 1, a bonnet assembly 10 and a valve stem 8, and the main valve body 7 is provided with an outlet channel 11 and a ball 1 installation cavity; The side valve body 2 is provided with an inlet passage 12, and the side valve body 2 and the main valve body 7 are fastened by bolts 9, and the contact and mating surfaces of the side valve body 2 and the main valve body 7 are all set as steps Shape, a sealing ring is set between the side valve body 2 and the main valve body 7, and the side valve body 2 and the main valve body 7 are arranged in a stepped shape to facilitate assembly and sealing; the ball 1 is installed in the installation cavity of the ball 1 , the ball 1 is covered by the side valve body 2 and the main valve body 7, and the side valve body 2 is provid...
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