| 摘要 |
<p>The invention relates to a method for incorporating a ball non-return valve in a pump body (1), comprising the following steps: moulding a pump body (1) with provision, on the internal surface (3) thereof in the base of the body (1), of grooves (7) each with an end section (11) which can be bent towards the interior of the body (1), introduction of a ball (13) into the interior of the space enclosed by said grooves (7) and bending said end sections (11) by means of a tool (15), such as to enclose said ball (13). The above is of application to pumps provided with ball non-return valves.</p> |
