| 摘要 |
<p>A pressure control valve is provided to perform connection work without interference of components around the valve in case of being connected to a pipe supplying pilot signal pressure from the outside. A pressure control valve comprises a sleeve(50), a piston(54), a poppet spring(55), a valve sheet, a pilot poppet(53) and a pilot poppet spring(57). In the sleeve, an inlet port(50a) and a tank flow path(50b) are formed. The piston is elastically supported in order to be slid inside a poppet(51). The poppet spring presses the poppet and supports a flow path between a tank flow path and an inlet. The valve sheet forms set pressure in a pressure chamber(c) within the sleeve. The pilot poppet opens the flow path of the valve sheet within the pressure chamber in the generation of high voltage exceeding the set pressure. The pilot poppet spring presses the pilot poppet and supports the flow path of a valve sheet(56) with closed state. The plug comprises a pilot port(58) in which the pilot signal pressure is supplied from the outside.</p> |
