| 摘要 |
The unit to separate water flow systems has a housing (1) with three pressure-reduction zones in the flow direction. The medium pressure zone (3) is defined by backflow barriers (11,17) against the inflow pressure zone (2) and the outflow pressure zone (4). It is emptied and ventilated by a controlled let-off valve (5,6) through the pressure difference between the inflow and medium pressure chambers. A tubular barrier (5) of the let-off valve (5,6) has an axial sliding movement, closed by a sprung (12) backflow block (11), and has radial passages (16) behind it in the flow direction. The tubular barrier (5) is moved by a relief piston (7) against the housing base (9), which also relieves the pressure at the let-off valve (5,6). |
