| 摘要 |
<p>Valve apparatus for use with hydraulic equipment to regulate selected characteristics of hydraulic fluid, such as its pressure, rate of flow, or the like. The valve apparatus is adjustable for setting the characteristic of the fluid at a selected magnitude and is constructed to prevent tampering with the adjusted setting. To adjust the setting it is necessary that at least a portion of the valve body be removed from the hydraulic equipment on which the valve body is mounted. The invention is shown in one form in a flow control valve and in another form in a pressure control relief valve.</p> |
