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Are gas fittings tightened clockwise or anti-clockwise?

clockwise
anti-clockwise
it depends on the gas
there is no standard
Some gas fittings use reverse threads to prevent disastrous misconnections. For example, oxygen fittings are right-handed, but acetylene and other flammable gases use left-handed fittings.
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Answers by country

clockwise
anti-clockwise
it depends on the gas
there is no standard
answers
flagAustralia
0%
29%
58%
0%
17
flagGreece
20%
30%
50%
0%
10
flagUkraine
10%
25%
46%
15%
66
flagthe United States
25%
34%
32%
7%
55
flagGermany
16%
38%
32%
12%
31
flagthe United Kingdom
27%
27%
31%
13%
29
flagArmenia
30%
30%
30%
10%
10
flagAustria
20%
30%
30%
20%
10
flagIndia
28%
40%
28%
4%
25
flagPoland
24%
41%
24%
8%
4530
flagBelarus
5%
64%
23%
5%
17
flagRussia
30%
30%
20%
15%
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