| 摘要 |
<p>Body (30) has a side surface (15, Fig. 1) or end face (31) provided with ports (32, 33) communicating with send and return lines (4, 5). The face (31) is closed by a silicone rubber diaphragm cast in situ from a liquid settable compound. This enables the device to be constructed to small size. External pressure is applied through a filter (38) in an end cap (37) secured to the body. <IMAGE></p> |
