| 摘要 |
<p>Method and device for preventing a primary relief valve (12) in a mud system (1) from opening at a pressure lower than a nominal opening pressure, and where the mud system (1) includes a mud pump (2), wherein the method includes: - installing an flow restrictor (16) between the mud pump (2) and the primary relief valve (12); and -providing a cavity (20) between the flow restrictor (16) and the primary relief valve (12).</p> |
