| 摘要 |
<p>PCT No. PCT/SE79/00238 Sec. 371 Date Jul. 24, 1980 Sec. 102(e) Date Jul. 22, 1980 PCT Filed Nov. 16, 1979 PCT Pub. No. WO80/01100 PCT Pub. Date May 29, 1980.Control and cut-off device for media flowing to consumer apparatuses and flow back therefrom. For example, dosing equipment, ventilation assemblies, heating and cooling arrangments, among which also conditioning plants are classified. The valve is then made especially to be reliable also after a long period of service, to give a close control of a small quantities of medium, to be capable of admitting locking of the pre-setting and thereby to prevent unauthorized persons from making a resetting without difficulty and to admit cutting-off of the consumer apparatuses from the source of medium. The control and cut-off device according to the invention includes a valve housing, having two connection openings connection to a source of medium and two connection openings for connection to consumer devices and within the valve housing a rotation control and cut-off member to control and cut-off the flow of medium. The valve housing is then provided with a cylindrical boring with which the connection openings have connection, a first tubular valve slide being rotatably mounted in the boring and having a cylindrical boring into which a second tubular valve slide is rotatably fitted. These valves slides are provided with openings so that they bring about a control or cut-off, respectively, of the medium by rotation.</p> |
