| 摘要 |
FIELD: machine building. ^ SUBSTANCE: universal valve comprises the following components arranged in hollow cylindrical case (1) - locking element in the form of ball (12), seat (10) and spring (5). In lower part of case, a support (3) is fixed with the help of press-on bush (2). Support (3) has press-on end (6) in upper part. Ball (12) interacts with seat (10) and is installed in valve unit (7). Unit (7) is pressed by threaded bush (8) and may slide in through hole of threaded bush and case along vertical axis. Support (3) and valve unit (7) in initial position are arranged with guaranteed gap between press-on end (6) of support and ball (12). ^ EFFECT: improved efficiency of valve operation in pump set, increased reliability and service life of valve in well pumps. ^ 6 cl, 4 dwg |
