摘要:
A gasket type orifice includes a first orifice base having a through-type passage in a central area thereof, a second orifice base having in a central area thereof a through-type passage communicating with the passage of the first orifice base, and an orifice plate having an orifice hole formed in a central area thereof, wherein the orifice plate is mounted by insertion in an airtight manner between both orifice bases, and the gasket type orifice is installed in a fluid passage, in which the outer end faces of both orifice bases respectively serve as sealing faces, and an outer diameter of the second orifice base, located on the downstream side, is larger than an outer diameter of the first orifice base located on the upstream side, and an outer peripheral edge portion of an inner end face of the second orifice base serves as another sealing face.
摘要:
A bolt-locking apparatus includes a plurality of fitting members 2 and 3 which are relatively non-rotatably fitted to heads of a plurality of bolts 5, and an engaging member 4 fitted to the plurality of fitting members 2 and 3 such that the engaging member 4 straddles the fitting members 2 and 3. Outer peripheral surfaces 2b and 3b of the fitting members 2 and 3 are non-circular in shape. The engaging member 4 includes a plurality of engaging holes (non-circular engaging portions) 8a and 8b which correspond to the non-circular outer peripheral surfaces 2b and 3b of the plurality of fitting members 2 and 3.
摘要:
Provided is a joint which can decrease the number of kinds of parts. A bolt 5 has a shaft portion 14 which is constituted of a distal end portion on which male threads 14a are formed and a remaining portion 14b on which male threads are not formed. First and second joint members 2, 3 have the same shape. A shaft insertion hole 15 which is disposed on an abutting end surface side of the joint member and a threaded hole 16 which is communicated with the shaft insertion hole 15 and extends to an end surface of the joint member on a side opposite to an abutting end surface of the joint member are formed in the first and second joint members 2, 3.
摘要:
There is provided a fluid control apparatus which enables reducing widths of lines for further reducing space occupied by the apparatus. Support flow-channel blocks 9 and 10 are constituted by large block portions 25 and 27 which have openings of fluid flow channels 9a and 10a abutted against openings of fluid flow channels 11c and 11d in extended flow-channel blocks 11a and 11b with seal portions 20 interposed therebetween and, also, are abutted against lower surfaces of the extended flow-channel blocks 11a and 11b, and small block portions 26 and 28 which have lower surfaces flushed with the large block portions 25 and 27 and have heights smaller than those of the large block portions. The small block portions 26 and 28 are provided with male-screw-members insertion holes 26a and 28a for mounting the support flow-channel blocks 9 and 10 to a base member 30.
摘要:
There is provided a fluid control apparatus which can improve assembling operation efficiency. A screw insertion hole 29 extending in a front and rear direction have a stepped portion 29a which receives a head portion 18a of a male screw member 18, and the stepped portion 29a is positioned at a position closer to an inserted tip end side of a male screw member 28 in the front and rear direction than a position, in the front and rear direction, of male screw members 34 from above. By fastening the male screw member 18 in the front and rear direction at first and then fastening the male screw member 34 from above, it is possible to prevent the male screw member 18 in the front and rear direction and the male screw member 34 from above from interfering with each other.
摘要:
A fluid control device that can be miniaturized without reducing a bolt diameter and a path diameter is provided.A fluid controller 31 having an inlet port 31a and an outlet port 31b aligned in a line direction and a line-to-line connection port 31c positioned in the middle of the above ports in the line direction is supported by a pair of joint members 7, a stepped part 7a is formed at each upper surface of opposed parts of the joint members 7, and line-to-line connection path forming members 9 and 10 having line-to-line paths 13 and 18 each communicating with the line-to-line connection port 31c of the fluid controller 31, respectively and constituting line-to-line connecting means 8 are supported by the stepped parts 7a of the joint members 7.
摘要:
A pressure type flow rate control reference which allows performance of flow rate calibrations of a flow rate controller on all types of gases, including corrosive gases, at low costs, and also has excellent flow rate control accuracy.The pressure type flow rate control reference includes a pressure controller for adjusting the pressure of a calibration gas from a calibration gas supply source, a first volume provided on the downstream side of a pressure controller, a first connection mouth of an uncalibrated flow rate controller provided on the downstream side of the first volume, a reference pressure type flow rate controller connected to a second connection mouth on the downstream side of the uncalibrated flow rate controller, a second volume provided on the downstream side of a reference pressure type flow rate controller, and an evacuation device provided on the downstream side of the second volume.
摘要:
Each of ridges 7 on respective opposite side surfaces of a gasket 4 has a trapezoidal cross sectional shape defined by an outer tapered face 7a providing an outer peripheral surface, an inner tapered face 7b providing an inner peripheral surface and a flat face 7c providing a top end surface. The hardness of the gasket 4, the angle between the tapered faces 7a, 7b of the ridge 7, the height of the ridge 7 and the area of the flat top end face 7c of the ridge are so determined that the value of thrust for tightening up the coupling is between a predetermined minimum value and a predetermined maximum value.
摘要:
Line interconnecting means 50 comprises lower channel blocks 51 each having a line interconnecting channel 54 and arranged in an upper stage of lines B1, B2, B3 to be interconnected, at the same position with respect to the direction of the lines, and a plurality of upper channel blocks 57 each arranged on an upper side of the lower channel blocks 51 of adjacent lines interconnected and each having a transverse channel 58a extending orthogonal to the lines and downward channel 58b extending from the transverse channel 58a and communicating with the respective line interconnecting channels 54 of the lower channel blocks 51. Each of the lower channel blocks 51 is removably fastened to a coupling member in a lower stage with screws from above, and the upper channel blocks 57 are removably fastened to the lower channel blocks 51 with screws from above.