| 摘要 |
<p>The invention relates to the sector of pressure-washing machines, in the form of a valve with by-pass function when the gun is closed, and allows reduction of the pressure inside the delivery duct during operation in by-pass mode. In particular this valve comprises an external housing (1) defining a chamber (2) provided with an inlet section (3), an outlet section (4) and a discharge section (5). It also comprises means (6) for shutting off the discharge section (5) or the outlet section (4), which are located inside the chamber (2) and actuated in a reciprocating manner by a difference in pressure and by resilient means (7) and provided with means (8) for communication between the inlet section (3) and the outlet section (5) operating during discharge of the flow through the discharge section (5). <IMAGE></p> |
