| 摘要 |
<p>A manufacture method of monoblock ball valve is based on overmoulding techniques and integral assembly of plastic components inside the injection moulds, in a sequential manufacturing process, wherein the component which is injected in the first stage of the process will be sequentially introduced in moulds which will in turn inject other components, thus resulting in the end in a single body that ensures the functional features of a piece obtained by several components' assembly. The hydraulic ball valve according to the invention comprises at least the following components: a ball filling element or valve filling core (1) with a valve conntrol stem,- a ball (2) that involves the ball filling element (1); a sleeve-type sealing element (3), which covers the entire ball and the whole interior part of the valve body,- and a valve body (4).</p> |
