Valve standard

Type Thread
BS341 No 3 (BS3) G 5/8″ RH BSPF
BS341 No 4 (BS4) G 5/8″ LH BSPF
BS341 No 6 (BS6) G 5/8″ RH BSPM
BS341 No 7 (BS7) G 5/8″ LH BSPM
BS341 No 8 (BS8) W 0.860″ RH male
BS341 No 10 (BS10) G 1/2″ RH BSPM
BS341 No 12 (BS12) G 1/2″ RH BSPM
BS341 No 14 (BS14) G 3/8″ RH BSPM
BS341 No 15 (BS15) G 3/8″ LH BSPM
CGA 110  ۵/۱۶″ ۳۲ NPT male
CGA 320 ۰٫۸۲۵″ ۱۴ NGO RH male (flat nipple)
CGA 330 ۰٫۸۲۵″ ۱۴ NGO LH male (flat nipple)
CGA 350 ۰٫۸۲۵″ ۱۴ NGO LH male (round nipple)
CGA 580 ۰٫۹۶۵″ ۱۴ NGO RH female
CGA 660 ۱٫۰۳۰″ ۱۴ NGO RH male (face washer)
CGA 670 ۱٫۰۳۰″ ۱۴ NGO LH male (face washer)
CGA 678 ۱٫۰۳۰″ ۱۴ NGO RH male (recessed washer)
DIN 1 (LU 1) W 21.80 x 1/14″ LH male
DIN 3 “aansluiting voor spanbeugel”
DIN 5 (LU 4) W 1″ LH male
DIN 6 (RU 1) W 21.80 x 1/14″ RH male
DIN 7 G 5/8″ RH male
DIN 8 (RU 4) W 1″ RH male
DIN 9 G 3/4″ RH male
DIN 10 (RU 3) W 24.32 x 1/14″ RH male
DIN 11 G 3/8″ RH male
DIN 13 G 5/8″ RH female
DIN 14 (LU 0) M 19 x 1.5 LH male

Abbreviations

W Whitworth thread
IS International system thread
G Gas thread
M Metric thread
LH Left handed
RH Right handed
Female Internal thread
Male External thread
BSPF British standard internal thread
BSPM British standard external thread
CGA Compressed gas association (US standard)
JIS Japanese industrial standard
NGO National gas outlet