| 摘要 |
<p>A fluid flow control device (2) and a compression member (1) therefore permit the clamping of a seal (3) of the device without the presence of internal threads so that high purity can be maintained. The compression member (1) comprises a first surface (4) centrally located on one side of the member for applying a concentrated central force to the seal (3) and a diametrically larger second surface (5) on a second side of the compression member (1) opposite the first side. At least a radially outer portion of the second surface (5) is elevated with respect to a radially inner portion thereof to provide a contact surface upon which the diametrically larger force is applied.</p> |
