| 摘要 |
<p>A valve includes a housing, a stern supported by the housing, and a valve member coupled to the stem. The valve member has a first passage defined therein with a metering flow profile, An apparatus includes a well tree having a production bore and a flow metering valve coupled to the well tree and communicating with the production bore. The flow metering valve Includes a valve member having a first passage defined therein with a metering flow profile and a second passage defined therein with an unrestricted flow profile. The second passage having a diameter substantially equal to a diameter of the production bore.</p> |
