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Types of valves & their Functions _ Piping Analysis

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00:00:00.030
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00:00:06.499 00:00:06.509 you
00:00:19.890 00:00:19.900 00:00:53.930 00:00:53.940 Gate valves gate valves used to start
00:00:59.640 00:00:59.650 and stop float the valve is completely
00:01:03.930 00:01:03.940 opened when the disc is removed from the
00:01:06.930 00:01:06.940 flow stream classification of gate
00:01:10.440 00:01:10.450 valves is made by the type of disk used
00:01:13.440 00:01:13.450 solid wedge flexible wedge split wedge
00:01:17.700 00:01:17.710 or parallel disc globe valves globe
00:01:28.680 00:01:28.690 valves used to start/stop and regulate
00:01:32.249 00:01:32.259 float the disc moves perpendicular to
00:01:36.840 00:01:36.850 the seat to open or close the flow so
00:01:39.930 00:01:39.940 the a Buehler space between the disc and
00:01:42.690 00:01:42.700 seat ring gradually changes there are
00:01:47.609 00:01:47.619 three body designs for globe valves z
00:01:51.660 00:01:51.670 body y body and angle and three designs
00:01:56.190 00:01:56.200 for the disc ball disc composition disc
00:02:00.359 00:02:00.369 and plumb disc ball valves
00:02:06.810 00:02:06.820 [Music]
00:02:09.520 00:02:09.530 rotational motion valve used to
00:02:12.320 00:02:12.330 start/stop or throttle float the valve
00:02:17.630 00:02:17.640 uses a ball shaped disc with a hole in
00:02:21.200 00:02:21.210 it when the valve is opened the hole of
00:02:25.640 00:02:25.650 disc is turn in line with the direction
00:02:27.830 00:02:27.840 of the flow when the valve is shut the
00:02:33.530 00:02:33.540 ball is rotated so that the hole is
00:02:35.990 00:02:36.000 perpendicular to flow direction
00:02:41.530 00:02:41.540 00:02:48.970 00:02:48.980 check valve
00:02:52.890 00:02:52.900 check valve or non return valve are used
00:02:56.980 00:02:56.990 in systems employing gate valves because
00:03:00.430 00:03:00.440 they prevent the reversal of flow in the
00:03:03.430 00:03:03.440 piping system and there is a low
00:03:05.500 00:03:05.510 pressure drop across the valve the
00:03:09.610 00:03:09.620 pressure of the fluid through the system
00:03:12.070 00:03:12.080 opens the system while the weight of the
00:03:15.040 00:03:15.050 check mechanism will close the valve if
00:03:17.560 00:03:17.570 the flow is reversed
00:03:23.520 00:03:23.530 [Applause]
00:03:25.100 00:03:25.110 control valves
00:03:29.830 00:03:29.840 a control valve Isabelle used to control
00:03:33.640 00:03:33.650 Luud float by parrying the size of the
00:03:36.670 00:03:36.680 flow passage as directed by a signal
00:03:39.400 00:03:39.410 from a controller this enables the
00:03:42.759 00:03:42.769 direct control of flowed rate in the
00:03:45.250 00:03:45.260 consequential control of processed
00:03:47.500 00:03:47.510 quantities such as pressure temperature
00:03:50.229 00:03:50.239 and liquid level
00:03:58.870 00:03:58.880 diaphragm valves linear motion valve
00:04:04.280 00:04:04.290 that are used to start regulate and stop
00:04:08.210 00:04:08.220 fluid float the disk is flexible and
00:04:12.410 00:04:12.420 seals with the seat in an open area at
00:04:15.080 00:04:15.090 the top of the valve body
00:04:18.660 00:04:18.670 00:04:24.559 00:04:24.569 butterfly valves rotary motion valve
00:04:30.300 00:04:30.310 that can be used in on/off and
00:04:32.820 00:04:32.830 throttling systems they are quick and
00:04:36.330 00:04:36.340 easy to operate the flow control element
00:04:40.680 00:04:40.690 is on either a vertical or horizontal
00:04:42.620 00:04:42.630 axis and is opened when the handle is
00:04:46.830 00:04:46.840 rotated 90 degrees and closed when the
00:04:49.950 00:04:49.960 valve is turned an additional 90 degrees
00:04:53.800 00:04:53.810 00:04:59.930 00:04:59.940 needle valves needle valves have a long
00:05:05.450 00:05:05.460 tapered needle-like point that is used
00:05:08.999 00:05:09.009 to make relatively fine adjustments in
00:05:11.909 00:05:11.919 the amount of fluid float they are
00:05:14.909 00:05:14.919 sometimes used as component parts for
00:05:17.909 00:05:17.919 other valves because the needle allows
00:05:20.490 00:05:20.500 for a gradual change in the size of the
00:05:23.490 00:05:23.500 fluid flowed opening relief and safety
00:05:32.730 00:05:32.740 valves the relief valve opens slowly as
00:05:37.860 00:05:37.870 the pressure increases about the
00:05:39.930 00:05:39.940 setpoint and only opens as necessary the
00:05:44.249 00:05:44.259 safety valve rapidly opens as the
00:05:47.129 00:05:47.139 pressured setting has reached and will
00:05:49.170 00:05:49.180 stay open until the pressure is lower
00:05:51.600 00:05:51.610 than the actuated pressure set point
00:05:54.649 00:05:54.659 both valves are used to prevent damage
00:05:58.499 00:05:58.509 by relieving accidental over pressurized
00:06:01.920 00:06:01.930 fluid systems
00:06:07.220 00:06:07.230 that's it for today do like share
00:06:13.850 00:06:13.860 comment and subscribe

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