High-vacuum push-and-pull valve

A high-vacuum push-and-pull valve is composed of a hand wheel (1), two stop bolts (2), a loose joint (3), a hand pull valve rod (4), a stop nut (5) and a valve body (6). The high-vacuum push-and-pull valve is characterized in that a sealing ring I (7) is arranged at the connected portion of the loose joint (3) and the valve body (6), a sealing ring II (8) is arranged at the connected portion of the stop nut (5) and the valve body (6), and the valve body (6) is connected and then sealed through the sealing ring I (7) and the sealing ring II (8); and sealing rings III (9) are arranged at the connected portions of the two ends of the loose joint (3) and the stop bolts (2), and the hand pull valve rod (4) located at the loose joint (3) is in a sealed state all the time through the sealing rings III (9). The high-vacuum push-and-pull valve is easy to operate and convenient to mount, the vacuumizing and exhaust efficiency is improved, the product structure is optimized, and it is guaranteed that the product meets t