Technical
Data
Units and Conversion Tables............................................................................................. 561
Decimal and Metric Equivalents of Fractions.................................................................. 562
TOPRING
Thread Types....................................................................................................................... 563
560
UNITS AND CONVERSION TABLES
CONVERSION FACTORS
POWER
1 "horsepower" = hp
VOLUME
1 inch³ = in³
1 feet³ = ft³
1 feet³ = ft³
1 gallon (U.S.)
1 gallon (U.S.)
1 gallon (imperial)
1 gallon (imperial)
1 metre³ = m³
1 ounce (liquid) U.S. = oz
1 ounce (liquid) imperial = oz
LENGTH
1 inch = in
1 feet = ft
MASS
1 ounce = oz
1 pound = lb
Multiply
by
=
From
Multiply
by
0.746
kiloWatts = kW
1 kiloWatts = kW
1.34
"horsepower" = hp
16.387
0.0283
28.32
3.785
0.1337
4.546
0.1605
1000
29.574
28.413
centimetre³ = cm³
metre³ = m³
litre = l
litre = l
feet³ = ft³
litre = l
feet³ = ft³
litre = l
millilitre = ml
millilitre = ml
1 centimetre³ = cm³
1 metre³ = m³
1 litre = l
1 litre = l
1 feet³ = ft³
1 litre = l
1 feet³ = ft³
1 litre = l
1 millilitre = ml
1 millilitre = ml
0.061
35.3
0.0353
0.264
7.48
0.22
6.23
0.001
0.0338
0.0352
inch³ = in³
feet³ = ft³
feet³ = ft³
gallon (U.S.)
gallon (U.S.)
gallon (imperial)
gallon (imperial)
metre³ = m³
ounce (liquid) U.S. = oz
ounce (liquid) imperial = oz
25.4
0.3048
millimetre = mm
metre = m
1 millimetre = mm
1 metre = m
0.03937
3.281
inch = in
feet = ft
28.35
453.592
gram = g
gram = g
gram = g
gram = g
0.03527 1 ounce = oz U.S.
0.002205 1 pound = lb
=
TEMPERATURE
Fahrenheit to Celsius
(°F - 32) x 5/9 = °C
Celsius to Fahrenheit
(0 °C x 9/5) + 32° = °F
TECHNICAL DATA
From
FROM
TO
litre/sec
litre/min
gallon/min
ft.cu/sec
ft.cu/min (SCFM)
litre/sec
litre/min
gallon/min
ft3/sec
ft3/min (SCFM)
1
0.0167
0.0631
28.3
0.472
60.0
1
3.789
1700
28.3
15.8
0.264
1
449
7.48
0.0353
0.000589
0.00223
1
0.0167
2.12
0.0353
0.134
60.0
1
m Hg
in Hg
ft H2O
atm
Bar
lb/in
PSI
kg-f/cm2
kPa
1
25.4
22.4
760
750
51.7
736
7.50
0.0394
1
0.883
29.9
29.5
2.04
29.0
0.295
0.0446
1.13
1
33.9
33.5
2.31
32.8
0.335
0.00132
0.0334
0.0295
1
0.987
0.068
0.968
0.00987
0.00133
0.0339
0.0299
1.01
1
0.0689
0.981
0.01
0.0193
0.491
0.434
14.7
14.5
1
14.2
0.145
0.00136
0.0345
0.0305
1.03
1.02
0.0703
1
0.0102
0.133
3.39
2.99
101
100
6.89
98.1
1
PRESSURE CONVERSION
FROM
mm Hg
in Hg
ft H2O
atm
Bar
lb/po2 (PSI)
kg-f/cm2
kPa
TO
Hg = Mercury
Example: 1 bar = 14.5 PSI
TOPRING
FLOW RATE CONVERSION
561
DECIMAL AND METRIC EQUIVALENTS OF FRACTIONS
TOPRING
TECHNICAL DATA
in
562
mm
in
mm
THREAD TYPES
With the caliper measure the thread diameter at the largest
point. (O.D. of male threads - I.D. of female threads).
Using the pitch gauge determine the number of threads
per inch. Comparison of gauge and coupling threads against
a lighted background will insure an accurate reading.
Male
Female
T.P.I. = THREAD PER INCH
1/4"
3/8"
14
T.P.I.
1/2"
NPTT = NATIONAL PIPE
THREAD TAPERED
Thread
O.D.
BSPP = BRITISH STANDARD
PIPE PARALLEL
The BSPP (parallel) male will mate
with a BSPP (parallel) female
or a female port.
BSPP Male
Thread
O.D.
BSPP Female
Thread
I.D.
BSPT = BRITISH STANDARD
PIPE / TAPERED
The BSPT (tapered) male will mate
with a BSPT (tapered) female,
or a BSPP (parallel) female
Thread
O.D.
BSPT Female
Thread
I.D.
01_06_2016
BSPT Male
1"
3/4"
Nominal
Size
in
1/8
1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
2
T.P.I.
Threads
Per inch
27
18
18
14
14
11-1/2
11-1/2
11-1/2
11-1/2
Male Thread
O.D.
in
3/8
35/64
43/64
27/32
1-1/16
1-5/16
1-43/64
1-29/32
2-3/8
Female Thread
I.D.
in
23/64
15/32
19/32
3/4
61/64
1-13/64
1-17/32
1-25/32
2-1/4
Nominal
Size
in
1/8
1/4
3/8
1/2
5/8
3/4
1
1-1/4
1-1/2
2
Thread
Size
1/8-28
1/4-19
3/8-19
1/2-14
5/8-14
3/4-14
1 -11
1-1/4-11
1-1/2-11
2 -11
Male Thread
O.D.
in
3/8
17/32
21/32
13/16
29/32
1-1/32
1-11/32
1-21/32
1-7/8
2-11/32
Female Thread
I.D.
in
11/32
15/32
19/32
3/4
13/16
31/32
1-7/32
1-17/32
1-25/32
2-7/32
Nominal
Size
in
1/8
1/4
3/8
1/2
5/8
3/4
1
1-1/4
1-1/2
2
Thread
Size
1/8-28
1/4-19
3/8-19
1/2-14
5/8-14
3/4-14
1 -11
1-1/4-11
1-1/2-11
2 -11
FMale Parallel
Thread
O.D. in
3/8
17/32
21/32
13/16
29/32
1-1/32
1-11/32
1-21/32
1-7/8
2-11/32
Female Tapered
Thread
I.D. in
11/32
15/32
19/32
3/4
13/16
31/32
1-7/32
1-17/32
1-25/32
2-7/32
TECHNICAL DATA
1/8"
18
T.P.I.
TOPRING
27
T.P.I.
18
T.P.I.
11-1/2
T.P.I.
14
T.P.I.
563