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For refrigeration pipe size conversion inches - Refrigerant pipe sizes

Conversion sizes
Inchesmm.Inchesmm.Inchesmm.Inchesmm.Inchesmm.
--125,4250,8376,24101,6
1/83,21 1/828,6 2 1/854,03 1/879,4 4 1/8104,8
1/46,41 1/431,82 1/457,23 1/482,64 1/4108,8
3/89,51 3/834,92 3/860,33 3/885,74 3/8111,1
1/212,71 1/238,12 1/263,53 1/288,94 1/2114,3
5/815,91 5/841,32 5/866,73 5/892,14 5/8117,5
3/419,01 3/444,42 3/469,83 3/495,24 3/4120,6
7/822,21 7/847,62 7/873,03 7/898,44 7/8123,8

 #5# 6 #8 #10 #12 #14
 2.9
 3.5
 4.2 
   5
 5.5
 6.3 



Energy unitsPressure units
1 J = 0.24 cal 1 Pa = 1 N / m * m
1 kJ = 0.28 W * h 1 Pa = 0.102 kgf / m * m
1 W = 1 J / s1 atm =0,101 mPa =1,013 bar
1 cal = 4.2 J 1 bar = 100 kPa = 0.987 atm
1 kcal / h = 1.163 W
1 kW ? 3412 BTU / h
1000 BTU / h ? 293 W
1 PSI = 0.06895 bar = 0.06805 atm


Parameters inch threads 


Outer diameter of the pipe to be connected
Thread SAE
Thread UNF
Outer thread diameter, mm
Average thread diameter, mm
Thread pitch
mm
inch
mm
Thread / inch
6
1/4''''
1/4''''
7/16''''-20
11,079
9,738
1,27
20
8
5/16''''
5/16''''
5/8''''-18
15,839
14,348
1,411
18
10
3/8''''
3/8''''
5/8''''-18
15,839
14,348
1,411
18
12
1/2''''
1/2''''
3/4''''-16
19,012
17,33
1,588
16
16
5/8''''
5/8''''
7/8''''-14
22,184
20,262
1,814
14
18
3/4''''
3/4''''
1''''-14
25,357
23,437
1,814
14
18
3/4''''
---
1''''1/16-14
26,947
25,024
1,814
14
20
7/8''''
---
1''''1/8-12
28,529
26,284
2,117
12
22
7/8''''
7/8''''
1''''1/4-12
31,704
29,459
2,117
12
22
7/8''''
---
1''''3/8-12
34,877
32,634
2,117
12
25
1''''
1''''
1''''1/2-12
38,052
35,809
2,117
12


Table inch sizes
 
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