Collins Tube Instruction Complete.Optimized

Transcription

WATER FLOW MEASUREMENT PROCEDURES
USING COLLINS-STYLE FLOW TUBES
1.
Survey piping system and determine the best section to measure flow. The longer the
section downstream from turns, valves, filters, etc, the better. Many field conditions are far
from ideal (10 pipe diameters downstream and 2 diameters upstream.)
2.
Drill and tap two 1/4" NPS threaded holes in the pipe 180° apart in the selected section.
3.
Measure pipe inside diameter as shown in Appendix B.
4.
Install the Collins-Style Straight Through flow tube in the pipe as shown in Appendix A. If
testing in a pressurized pipe, tighten the packing gland with a wrench.
5.
Center the flow hole in the pipe as shown in Appendix C. Then locate the reading stops for
taking the flow measurements. Refer to Appendix D for stop settings for various sizes of
pipe. The settings are calculated for new pipe. Choose a setting that matches the closest
to your actual inside diameter reading.
Settings are measured from the outside of the knurled nut on the packing gland, to the
inside edge of the reading stop. A steel ruler with a 1/16" scale can be used for this task.
Clamp the reading stops in place. Be sure to do this for both sides of the flow tube.
With reading stops positioned and tightened, you can slide the flow tube through the pipe
and align the holes at the precise point the measure the velocity of the water flowing
through the pipe.
2-point readings are normally used for measuring flow in pipes 12" and smaller, with a
normal flow. 6-point readings are recommended for larger pipe sizes and for situations
where the flow is going to be unusually heavy on one side of the pipe as opposed to the
other. (An example of this would be less than 10 diameters from an elbow in high velocity
flow.)
6.
Turn on the pump. Allow enough time for the system to fill the water levels to stabilize.
The bottom of the manometer should be above the Collins-Style meter. Watch the
pressure gauges and monitor water levels until conditions are steady. At this time, make
sure that there is no air trapped in the hoses. Tap and work the hoses until all trapped air
is released.
7.
Once the system is stabilized, take readings using the sliding scale and the water
manometer. Position the zero end at the lower water column and read the scale on the
upper column.
221 W. Santa Fe Ave,. Fullerton, CA 92832
(714-870-9881) C FAX (714-870-6399) C E-MAIL: [email protected]
Page 1
A.
Record the first reading taken in the centerline position. (Align the Straight Through
tube to have one hole facing exactly upstream and the other facing downstream of
the flow.) (Note: The centerline reading is not used for flow calculations, but to
determine water flow profile.)
B.
Reverse the tube by twisting the Straight Through tube 180° and take a second
reading. Normally the second reading will be within 0.2 compared to the first
reading. It is best to record these readings on the Field Sheet, or a small tablet for
later transfer to the Field Sheet.
C.
Slide the tube away from you until the reading stop closest to you touches the
knurled nut on the packing gland. Check the alignment of the tube (see that the
impact hole is facing directly upstream), take reading number 3, and record.
D.
Reverse the Straight Through tube 180° and take reading number 4. Record the
reading.
E.
Pull the Straight Through tube toward you until the far side reading stop touches the
knurled nut on the packing gland. Take reading number 5 and record.
F.
Turn the Straight Through tube 180° and take reading number 6 and record.
G.
Review all previous recorded readings to check for abnormality. If necessary,
re-checks can be taken to verify original readings.
8.
Before the pump is turned off, record discharge pressure using an accurate pressure
gauge. This can be measured at the manometer or other locations on the discharge pipe.
Industry standards use reference to center line of discharge pipe on turbine pumps or
centerline of shaft on centrifugal pumps.
9.
This is to remind you that other test recordings should also be taken when making a
complete pump efficiency test.
Standing Water Level
Draw Down
Pumping Water Level
Discharge pressure/head
Page 2
Electrical KW input or engine fuel measurement
Simultaneous readings make for better results. (All readings taken within a few moments of each
other)
Make a habit of double checking all readings. It makes for more accurate readings, and promotes
confidence in the results.
Note: If the water volume exceeds the manometer capacity, add the extension tube to the
manometer. Attach the extension to either side of the manometer, and to one side of the
Collins-Style tube. Then release or add air until the water columns are balanced
approximately 6" from the bottom of the manometer. When in the test position, measure
the distance between the two columns with a tape measure (“H”). Multiply the square root
of “H” times 1.618 to get a manometer reading. (See Appendix E.)
Page 3
Example of flow reading measurement and calculation for the Straight Through tube:
See Appendix D-1 for data
8" std pipe - ID = 7.981
Multiplier (GPM/Feet/Second) = 154.3
2-point setting is 2-13/16"
Sample Readings:
Reading No.
Near Side
Far Side
Centerline
7.8
7.9
1/2
7.6
7.4
3 /4
7.5
7.4
The centerline readings are only used to determine water flow profile, and are not used in flow
calculations.
Determine average velocity by adding the four side readings and divide by 4 (the total number of
side readings)
7.6 + 7.5 + 7.4 + 7.4 = 22.9
L
22.9 ÷ 4 = 7.475 (average flow reading)
Multiply the average flow velocity of 7.475 times the pipe size multiplier of 154.3 to determine
gallons per minute (GPM)
7.475 x 154.3 = 1153 GPM
Page 4
Collins-Style Calculation of Settings
After you have the inside diameter of the pipe, the stop settings and multipliers can be calculated
using the following formulas:
STOP SETTINGS:
D = inside diameter
2 Point Setting =
(D)(0.354)
3 Point Setting =
(D)(0.204)
(D)(0.354)
(D)(0.457)
5 Point Setting =
(D)(0.158)
(D)(0.275)
(D)(0.354)
(D)(0.420)
(D)(0.475)
MULTIPLIERS FOR THE STRAIGHT THROUGH TUBE:
Use the following for pipe sizes up to 10" NPS:
(D)2(2.55) - D
For pipe sizes over 10" NPS:
(D)2(2.45)
MULTIPLIERS FOR THE OVERHUNG TUBE:
For all pipe sizes:
(D)2(2.45)
Page 5
The Collins-Style Overhung Tube is used where the flow velocities are very high, or where it is
impractical to have two holes in the pipe. The layout of the overhung tube is shown in the
following pages, and the installation and alignment of the tube is shown in Appendix F and
Appendix F-1.
Flow multipliers for the Overhung Tube are found in Appendix D-2. They differ somewhat from
those for the Straight Through tube. The formula for pipe flow for the overhung tube is:
(Manometer Reading) x (Multiplier from Appendix D-2) x 1.414
So for the earlier example:
8" std pipe - ID = 7.981
Multiplier (GPM/Feet/Second) = 155.9
2-point setting is 2-13/16"
7.475 x 155.9 x 1.414 = 1648 GPM
Obviously, the Overhung Tube can’t be turned 180° around, but several readings should be taken
to get a good average. The best method is to take one reading at the near stop point, move the
tube to the far stop point for the second reading, then repeat the process to get an additional set
of readings.
The Overhung tube is connected to the manometer the same way as the Straight Through Tube.
Each side of the manometer is attached to a valve on the head of the tube.
SPECIAL NOTES
1.
The Overhung Tube is inserted into the pipe through a 3/8" FPT hole or fitting. Therefore
the Overhung tube cannot be inserted through the same hole as the Straight Through
Tube, which uses a 1/4" FPT hole or fitting.
2.
The Collins Overhung Style tube is not recommended for pipe sizes smaller than 6"
nominal. This is because the bend-radius of the tube will not allow the center point to be
positioned at the correct location on the “near” side of the pipe (See Appendix F). It is also
not recommended that the 6-point test be attempted, because of the same reason.
Page 6
COLLINS TYPE
W ATER
MANOMETER
(VELOCITY)x(MULTIPLIER)
= GPM
221 W . Santa Fe Ave,. Fullerton, CA 92832
(714-870-9881) C FAX (714-870-6399) C E-M AIL: sales@ cwcox.com
Hang the manometer in a vertical position above the head of the pitot tube, so there is no air trapped in the
hoses. Turn the valves at the bottom of the manometer so that the valve handles are horizontal and pointing
outward. (“Vent from Below”. This is the bleed position and helps vent trapped air when the pitot valves
are opened.) Connect the rubber hoses to the manometer.
Hold the manometer above the level of the discharge pipe, and allow air and water to bleed from the hoses.
Then turn the valve stems at the bottom of the manometer to a vertical downward (“Normal Flow”) position.
If water fills the glass tubes, it may be necessary to add air through the Schrader valve at the top of the
manometer. If the water level is too low, release air through this same valve. After the water has settled in
the tubes, tap or shake the hoses to release any trapped air.
Move the lower manometer slider to the lower water level. Do the same with the upper manometer slider.
Read the difference between the two tubes.
The positions of the valves to which the rubber hoses are connected are shown below. In the “vent from
above” position, only the water above the valve will be vented. The inlet from the rubber hoses is cut off.
(714-870-9881) C FAX (714-870-6399) C E-M AIL: c.w .cox@ juno.com
APPENDIX A
Use of the Collins-Style ID Gauge - APPENDIX B
Once you have drilled and tapped the holes in the discharge pipe, you can install the Collins-Style
ID Gauge as follows:
1.
Insert a Collins-Style ID gage into the pipe using the pipe bushing on the ID gauge and the
threaded hole in the pipe. Do not over-tighten the bushing. The inside of the bushing is
supposed to be flush with the inside wall of the pipe.
2.
Slide the rod on the ID gauge across the pipe until it contacts the opposite side.
3.
Put the stop up flush against the packing gland of the ID gauge. Tighten down the
thumbscrew on the stop, to secure it to the rod.
4.
Slide the rod out until it stops. The rod stops when the end is flush with the bushing.
5.
Measure the distance between the end of the packing gland and the stop to get the ID of
the pipe.
STOP SETTING MEASUREMENT AND LOCATION
APPENDIX C
Once you have the settings and multiplier, you are ready to install the CollinsStyle straight tube. The first step is to center the tube on the discharge pipe.
Measure from the side of the discharge pipe out to the end of the tube. Do
this on both sides of the discharge pipe.
PIPE SIZES AND FLOW CONSTANTS FOR COLLINS
STRAIGHT-THROUGH FLOW TUBES
Pipe
Size
Pipe
Wall
OD Thickness
Inside
Diameter
GPM/
Feet/
Second
2-Point
Setting
0.353D
0.204D
6-Point Setting
0.354D
0.457D
2" std
2" XS
2-1/2" std
2-1/2" XS
3" std
3" XS
3-1/2" std
3-1/2" XS
4" std
4" XS
2.375
2.375
2.875
2.875
3.500
3.500
4.000
4.000
4.500
4.500
0.154
0.218
0.203
0.276
0.216
0.300
0.226
0.318
0.237
0.337
2.067
1.939
2.469
2.323
3.068
2.900
3.548
3.364
4.026
3.826
8.8
7.6
13.0
11.4
20.9
18.5
28.5
25.4
37.2
33.4
3/4”
11/16”
7/8”
13/16”
1-1/16”
1”
1-1/4”
1-3/16”
1-7/16”
1-3/8”
7/16”
3/8”
1/2”
1/2”
5/8”
9/16”
3/4”
11/16”
13/16”
3/4”
3/4”
11/16”
7/8”
13/16”
1-1/16”
1”
1-1/4”
1-3/16”
1-7/16”
1-3/8”
15/16”
7/8”
1-1/8”
1-1/16”
1-3/8”
1-5/16”
1-5/8”
1-9/16”
1-13/16”
1-3/4”
5" std
5" XS
6" std
6" XS
8" sch 20
8" sch 30
8" std
8" XS
10" sch 20
10" sch 30
10" std
10" XS
12" sch 20
12" sch 30
12" std
12" sch 40
12" XS
14" sch 10
14" sch 20
14" std
14" XS
16" sch 10
16" sch 20
16" std
16" XS
18" sch 10
18" sch 20
18" std
18" sch 30
18" XS
20" sch 10
20" std
5.563
5.563
6.625
6.625
8.625
8.625
8.625
8.625
10.750
10.750
10.750
10.750
12.750
12.750
12.750
12.750
12.750
14.000
14.000
14.000
14.000
16.000
16.000
16.000
16.000
18.000
18.000
18.000
18.000
18.000
20.000
20.000
0.258
0.375
0.280
0.432
0.250
0.277
0.322
0.500
0.250
0.307
0.365
0.500
0.250
0.330
0.375
0.438
0.500
0.250
0.312
0.375
0.500
0.250
0.312
0.375
0.500
0.250
0.312
0.375
0.438
0.500
0.250
0.375
5.047
4.813
6.065
5.761
8.125
8.071
7.981
7.625
10.250
10.136
10.020
9.750
12.250
12.090
12.000
11.874
11.750
13.500
13.376
13.250
13.000
15.500
15.376
15.250
15.000
17.500
17.376
17.250
17.124
17.000
19.500
19.250
59.8
54.2
87.6
78.8
160.1
157.9
154.3
140.5
257.5
251.7
245.8
232.5
367.3
357.8
352.5
345.1
338.0
446.1
438.0
429.7
413.7
588.1
578.7
569.3
550.8
749.6
739.1
728.4
717.8
707.4
930.8
907.1
1-13/16”
1-11/16”
2-1/8”
2-1/16”
2-7/8”
2-7/8”
2-13/16”
2-11/16”
3-5/8”
3-9/16”
3-9/16”
3-7/16”
4-5/16”
4-1/4”
4-1/4”
4-3/16”
4-1/8”
4-3/4”
4-3/4”
4-11/16”
4-9/16”
5-1/2”
5-7/16”
5-3/8”
5-5/16”
6-3/16”
6-1/8”
6-1/16”
6-1/16”
6”
6-7/8”
6-13/16”
1”
1”
1-1/4”
1-3/16”
1-11/16”
1-5/8”
1-5/8”
1-9/16”
2-1/16”
2-1/16”
2-1/16”
2”
2-1/2”
2-7/16”
2-7/16”
2-7/16”
2-3/8”
2-3/4”
2-3/4”
2-11/16”
2-5/8”
3-3/16”
3-1/8”
3-1/8”
3-1/16”
3-9/16”
3-9/16”
3-1/2”
3-1/2”
3-7/16”
4”
3-15/16”
1-13/16”
1-11/16”
2-1/8”
2-1/16”
2-7/8”
2-7/8”
2-13/16”
2-11/16”
3-5/8”
3-9/16”
3-9/16”
3-7/16”
4-5/16”
4-1/4”
4-1/4”
4-3/16”
4-3/16”
4-3/4”
4-3/4”
4-11/16”
4-5/8”
5-1/2”
5-7/16”
5-3/8”
5-5/16”
6-3/16”
6-1/8”
6-1/8”
6-1/16”
6”
6-7/8”
6-13/16”
2-5/16”
2-3/16”
2-3/4”
2-5/8”
3-11/16”
3-11/16”
3-5/8”
3-1/2”
4-11/16”
4-5/8”
4-9/16”
4-7/16”
5-5/8”
5-1/2”
5-1/2”
5-7/16”
5-3/8”
6-3/16”
6-1/8”
6-1/16”
5-15/16”
7-1/16”
7”
7”
6-7/8”
8”
7-15/16”
7-7/8”
7-13/16”
7-3/4”
8-15/16”
8-13/16”
APPENDIX D-1
Page D1-1
PIPE SIZES AND FLOW CONSTANTS FOR COLLINS
STRAIGHT-THROUGH FLOW TUBES
Pipe
Size
Pipe
Wall
OD Thickness
Inside
Diameter
GPM/
Feet/
Second
2-Point
Setting
0.353D
0.204D
6-Point Setting
0.354D
0.457D
20" XS
22" sch 10
22" std
22" XS
24" sch 10
24" std
24" XS
26" sch 10
26" std
26" XS
20.000
22.000
22.000
22.000
24.000
24.000
24.000
26.000
26.000
26.000
0.500
0.250
0.375
0.500
0.250
0.375
0.500
0.312
0.375
0.500
19.000
21.500
21.250
21.000
23.500
23.250
23.000
25.376
25.250
25.000
883.7
1131.5
1105.3
1079.5
1351.8
1323.2
1294.9
1576.3
1560.6
1529.9
6-11/16”
7-9/16”
7-1/2”
7-7/16”
8-5/16”
8-3/16”
8-1/8”
8-15/16”
8-15/16”
8-13/16”
3-7/8”
4-3/8”
4-5/16”
4-5/16”
4-13/16”
4-3/4”
4-11/16”
5-3/16”
5-1/8”
5-1/8”
6-3/4”
7-5/8”
7-1/2”
7-7/16”
8-5/16”
8-1/4”
8-1/8”
9”
8-15/16”
8-7/8”
8-11/16”
9-13/16”
9-11/16”
9-5/8”
10-3/4”
10-5/8”
10-1/2”
11-5/8”
11-9/16”
11-7/16”
28" sch 10
28" std
28" XS
30" sch 10
30" std
30" XS
32" sch 10
32" std
32" XS
34" sch 10
34" std
34" XS
36" sch 10
36" std
36" XS
28.000
28.000
28.000
30.000
30.000
30.000
32.000
32.000
32.000
34.000
34.000
34.000
36.000
36.000
36.000
0.312
0.375
0.500
0.312
0.375
0.500
0.312
0.375
0.500
0.312
0.375
0.500
0.312
0.375
0.500
27.376
27.250
27.000
29.376
29.250
29.000
31.376
31.250
31.000
33.376
33.250
33.000
35.376
35.250
35.000
1834.5
1817.7
1784.5
2112.3
2094.3
2058.6
2409.8
2390.5
2352.4
2726.8
2706.2
2665.7
3063.4
3041.6
2998.6
9-11/16”
9-5/8”
9-1/2”
10-3/8”
10-5/16”
10-1/4”
11-1/16”
11-1/16”
10-15/16”
11-13/16”
11-3/4”
11-5/8”
12-1/2”
12-7/16”
12-3/8”
5-9/16”
5-9/16”
5-1/2”
6”
5-15/16”
5-15/16”
6-3/8”
6-3/8”
6-5/16”
6-13/16”
6-13/16”
6-3/4”
7-3/16”
7-3/16”
7-1/8”
9-11/16”
9-5/8”
9-9/16”
10-3/8”
10-3/8”
10-1/4”
11-1/8”
11-1/16”
11”
11-13/16”
11-3/4”
11-11/16”
12-1/2”
12-1/2”
12-3/8”
12-1/2”
12-7/16”
12-5/16”
13-7/16”
13-3/8”
13-1/4”
14-5/16”
14-5/16”
14-3/16”
15-1/4”
15-3/16”
15-1/16”
16-3/16”
16-1/8”
16”
APPENDIX D-1
Page D1-2
APPENDIX E
Pipe
Size
Pipe
Wall
OD Thickness
Inside
Diameter
GPM/
Feet/
Second
2-Point
Setting
0.353D
8" sch 20
8.625
0.250
8.125
161.6
2-7/8”
8" sch 30
8" std
8.625
8.625
0.277
0.322
8.071
7.981
159.5
155.9
2-7/8”
2-13/16”
8" XS
10" sch 20
8.625
10.750
0.500
0.250
7.625
10.250
142.3
257.2
2-11/16”
3-5/8”
10" sch 30
10" std
10.750
10.750
0.307
0.365
10.136
10.020
251.5
245.8
3-9/16”
3-9/16”
10" XS
12" sch 20
12" sch 30
10.750
12.750
12.750
0.500
0.250
0.330
9.750
12.250
12.090
232.7
367.3
357.8
3-7/16”
4-5/16”
4-1/4”
12" std
12" sch 40
12.750
12.750
0.375
0.438
12.000
11.874
352.5
345.1
4-1/4”
4-3/16”
12" XS
14" sch 10
12.750
14.000
0.500
0.250
11.750
13.500
338.0
446.1
4-1/8”
4-3/4”
14" sch 20
14" std
14.000
14.000
0.312
0.375
13.376
13.250
438.0
429.7
4-3/4”
4-11/16”
14" XS
16" sch 10
14.000
16.000
0.500
0.250
13.000
15.500
413.7
588.1
4-9/16”
5-1/2”
16" sch 20
16" std
16.000
16.000
0.312
0.375
15.376
15.250
578.7
569.3
5-7/16”
5-3/8”
16" XS
18" sch 10
18" sch 20
18" std
18" sch 30
18" XS
20" sch 10
20" std
20" XS
22" sch 10
22" std
22" XS
24" sch 10
16.000
18.000
18.000
18.000
18.000
18.000
20.000
20.000
20.000
22.000
22.000
22.000
24.000
0.500
0.250
0.312
0.375
0.438
0.500
0.250
0.375
0.500
0.250
0.375
0.500
0.250
15.000
17.500
17.376
17.250
17.124
17.000
19.500
19.250
19.000
21.500
21.250
21.000
23.500
550.8
749.6
739.1
728.4
717.8
707.4
930.8
907.1
883.7
1131.5
1105.3
1079.5
1351.8
5-5/16”
6-3/16”
6-1/8”
6-1/16”
6-1/16”
6”
6-7/8”
6-13/16”
6-11/16”
7-9/16”
7-1/2”
7-7/16”
8-5/16”
APPENDIX D-2
Page 1
Pipe
Size
Pipe
Wall
OD Thickness
Inside
Diameter
GPM/
Feet/
Second
2-Point
Setting
0.353D
24" std
24.000
0.375
23.250
1323.2
8-3/16”
24" XS
26" sch 10
24.000
26.000
0.500
0.312
23.000
25.376
1294.9
1576.3
8-1/8”
8-15/16”
26" std
26" XS
26.000
26.000
0.375
0.500
25.250
25.000
1560.6
1529.9
8-15/16”
8-13/16”
28" sch 10
28" std
28.000
28.000
0.312
0.375
27.376
27.250
1834.5
1817.7
9-11/16”
9-5/8”
28" XS
30" sch 10
30" std
28.000
30.000
30.000
0.500
0.312
0.375
27.000
29.376
29.250
1784.5
2112.3
2094.3
9-1/2”
10-3/8”
10-5/16”
30" XS
32" sch 10
30.000
32.000
0.500
0.312
29.000
31.376
2058.6
2409.8
10-1/4”
11-1/16”
32" std
32" XS
32.000
32.000
0.375
0.500
31.250
31.000
2390.5
2352.4
11-1/16”
10-15/16”
34" sch 10
34" std
34.000
34.000
0.312
0.375
33.376
33.250
2726.8
2706.2
11-13/16”
11-3/4”
34" XS
36" sch 10
34.000
36.000
0.500
0.312
33.000
35.376
2665.7
3063.4
11-5/8”
12-1/2”
36" std
36" XS
36.000
36.000
0.375
0.500
35.250
35.000
3041.6
2998.6
12-7/16”
12-3/8”
APPENDIX D-2
Page 2
APPENDIX F
Make the first mark at the junction of the stem and packing gland, when the
tube is inserted all the way across the far wall of the pipe. Then draw out the
tube until the tip contacts the near wall of the pipe. Make the second mark at
a distance equal to the 1st Set Point (“A”) found in Appendix F-1. Make the
third mark at a distance equal to the 2nd Set Point (“B”) found in
Appendix F-1. The 2nd and 3rd marks are where the tube should be
positioned when making the 2-point test.
Note: The Collins Overhung Style tube is not recommended for pipe sizes
smaller than 6" nominal. This is because the bend-radius of the tube will not
allow the center point to be positioned at the correct location(“B”, shown
above). It is also not recommended that the 6-point test be attempted,
because of the same reason.
INSTALLATION INSTRUCTIONS FOR THE COLLINS-STYLE OVERHUNG
TUBE
6 5/8 in
"A"
"B"
7.980 in
(PIPE ID)
SECOND POINT = FIRST POINT + 2S
FIRST POINT = ID/2 - S - 3/16 (.188)
SAMPLE: 8" SCH 40 (STD WALL) PIPE:
FOR EACH CALCULATED "SETTING" VALUE ("S"):
1 in 2 13/16 in
2 13/16 in ("S")
(FROM APP D-2)
FORMULA FOR LOCATING
THE OVERHUNG TUBE
IN THE PIPE
8 5/8 in
(PIPE OD)
NOMINAL
PIPE SIZE
8" sch 20
8" sch 30
8" std
8" XS
10" sch 20
10" sch 30
10" std
10" XS
12" sch 20
12" sch 30
12" std
12" sch 40
12" XS
14" sch 10
14" sch 20
14" std
14" XS
16" sch 10
16" sch 20
16" std
16" XS
18" sch 10
18" sch 20
18" std
18" sch 30
18" XS
20" sch 10
20" std
20" XS
22" sch 10
22" std
22" XS
24" sch 10
PIPE
OD
8.625
8.625
8.625
8.625
10.750
10.750
10.750
10.750
12.750
12.750
12.750
12.750
12.750
14.000
14.000
14.000
14.000
16.000
16.000
16.000
16.000
18.000
18.000
18.000
18.000
18.000
20.000
20.000
20.000
22.000
22.000
22.000
24.000
PIPE
WALL
0.250
0.277
0.322
0.500
0.250
0.307
0.365
0.500
0.250
0.330
0.375
0.438
0.500
0.250
0.312
0.375
0.500
0.250
0.312
0.375
0.500
0.250
0.312
0.375
0.438
0.500
0.250
0.375
0.500
0.250
0.375
0.500
0.250
PIPE
ID
8.125
8.071
7.981
7.625
10.250
10.136
10.020
9.750
12.250
12.090
12.000
11.874
11.750
13.500
13.376
13.250
13.000
15.500
15.376
15.250
15.000
17.500
17.376
17.250
17.124
17.000
19.500
19.250
19.000
21.500
21.250
21.000
23.500
2-POINT
0.353A
0.353B
1”
6-3/4”
1” 6-11/16”
1”
6-5/8”
15/16”
6-5/16”
1-5/16”
8-9/16”
1-5/16”
8-7/16”
1-5/16”
8-3/8”
1-1/4”
8-1/8”
1-5/8”
10-1/4”
1-9/16”
10-1/8”
1-9/16” 10-1/16”
1-9/16” 9-15/16”
1-9/16” 9-13/16”
1-13/16” 11-5/16”
1-3/4”
11-1/4”
1-3/4”
11-1/8”
1-3/4”
10-7/8”
2-1/16” 13-1/16”
2-1/16” 12-15/16”
2-1/16” 12-13/16”
2”
12-5/8”
2-3/8”
14-3/4”
2-3/8”
14-5/8”
2-3/8”
14-1/2”
2-5/16” 14-7/16”
2-5/16” 14-5/16”
2-11/16” 16-7/16”
2-5/8”
16-1/4”
2-5/8”
16”
3”
18-1/8”
2-15/16” 17-15/16”
2-7/8”
17-3/4”
3-1/4”
19-7/8”
APPENDIX F-1
Page 1
NOMINAL
PIPE SIZE
24" std
24" XS
26" sch 10
26" std
26" XS
28" sch 10
28" std
28" XS
30" sch 10
30" std
30" XS
32" sch 10
32" std
32" XS
34" sch 10
34" std
34" XS
36" sch 10
36" std
36" XS
PIPE
OD
24.000
24.000
26.000
26.000
26.000
28.000
28.000
28.000
30.000
30.000
30.000
32.000
32.000
32.000
34.000
34.000
34.000
36.000
36.000
36.000
PIPE
WALL
0.375
0.500
0.312
0.375
0.500
0.312
0.375
0.500
0.312
0.375
0.500
0.312
0.375
0.500
0.312
0.375
0.500
0.312
0.375
0.500
PIPE
ID
23.250
23.000
25.376
25.250
25.000
27.376
27.250
27.000
29.376
29.250
29.000
31.376
31.250
31.000
33.376
33.250
33.000
35.376
35.250
35.000
2-POINT
0.353A
0.353B
3-1/4”
19-5/8”
3-3/16” 19-7/16”
3-9/16” 21-7/16”
3-1/2”
21-3/8”
3-1/2”
21-1/8”
3-13/16” 23-3/16”
3-13/16” 23-1/16”
3-3/4” 22-13/16”
4-1/8”
24-7/8”
4-1/8”
24-3/4”
4-1/16” 24-9/16”
4-7/16” 26-9/16”
4-3/8” 26-7/16”
4-3/8”
26-1/4”
4-11/16” 28-5/16”
4-11/16” 28-3/16”
4-11/16” 27-15/16”
5”
30”
5”
29-7/8”
4-15/16” 29-11/16”
APPENDIX F-1
Page 2
APPENDIX G
COLLINS TUBE SIZE TABLE
Tube Size
Maximum Pipe Diameter
2-Point
Test
3-Point
Test
5-Point
Test
18" Collins-Style Straight Through Tube
4" Nom.
4" Nom.
4" Nom.
8" Nom.
6" Nom.
6" Nom.
14" Nom.
14" Nom.
12" Nom.
20" Nom.
18" Nom.
18" Nom.
28" Nom.
26" Nom.
26" Nom.

Collins Tube Instruction Complete.Optimized

Transcription

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