| 摘要 |
<p>In a pressure reducing valve, a valve body is slidably fitted in a housing with an annular seal member disposed between the valve body and the valve housing; a back pressure chamber is formed within the valve housing with an end part, on a side opposite to a valve seat, of the valve body facing the back pressure chamber; fluid pressure on a downstream side of the valve seat is introduced into the back pressure chamber; and a pressure-receiving member that operates in response to fluid pressure on the downstream side of the valve seat is linked to the valve body. The valve housing is provided with a guide hole (31) having a smaller diameter than a seal diameter of the valve body (34) provided by a seal member (35) so that a guide portion (34c) coaxially possessed by the valve body (34) is slidably fitted in the guide hole (31). Accordingly, it enables the length of a sliding section of a valve body to be set short even when the seat diameter is large, thus reducing the dimensions.</p> |
