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Structure and Principle of
Anti-Backflow Valve |
Plug equipped with anti-backflow valve |
The anti-backflow valve in the plug is designed specifically for welding, instantly preventing gas from flowing back into a tank or hose and mixing with other gas. It is equipped with a special stop valve whichinstantly senses backflow and shuts off the gas. In addition to the conventional acetylene series there is now a new oxygen line-up, providing increased safety. |
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Dimensions and Weight Tables |
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Model |
Dimensions(mm) |
Weigh
(g) |
Applications |
Lp |
C |
A |
¢HP |
¢T |
¢BP |
For oxygen |
22PH |
55 |
23.5 |
28 |
11 |
8 |
5 |
16 |
For 1/4" hose |
25PH |
9 |
19 |
For 5/16" hose |
For acetylene |
33PH |
57 |
25.5 |
28 |
14 |
10.5 |
7.5 |
22 |
For 3/8" hose |
35PH |
9 |
6 |
20 |
For 5/14" hose |
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Model |
Dimensions(mm) |
Weight
(g) |
Applications |
Ls |
¢D |
A |
¢T |
¢Bs |
For oxygen |
22SH |
64 |
19.8 |
28 |
8 |
5 |
52 |
For 1/4" hose |
25SH |
9 |
55 |
For 5/16" hose |
For acetylene |
33SH |
65 |
22.6 |
28 |
10.5 |
7.5 |
69 |
For 3/8" hose |
35SH |
9 |
6 |
67 |
For 5/14" hose |
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Model |
Dimensions(mm) |
Weight
(g) |
Applications |
Lp |
C |
A |
HP |
T |
¢BP |
For oxygen |
22PF |
43 |
23.5 |
19 |
Hex.19 |
M16×15 |
5 |
31 |
For oxygen torch |
25PF |
43.5 |
9 |
Hex.17 |
W12.5 |
26 |
For acetylene |
33PF |
44.5 |
25.5 |
10 |
Hex.19 |
M16×
1.5L |
7.5 |
36 |
For gas torch |
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Model |
Dimensions(mm) |
Weight
(g) |
Applications |
Ls |
¢D |
A |
T |
¢Bs |
Hs |
For oxygen |
22SF |
52 |
19.8 |
12 |
M16×
15 |
5 |
Hex.19 |
80 |
For oxygen torch |
For acetylene |
33SF |
54 |
22.6 |
12 |
M16×
1.5L |
5 |
Hex.19 |
96 |
For gas torch |
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Model |
Dimensions(mm) |
Weight
(g) |
Applications |
Lp |
C |
A |
HP |
T |
¢BP |
For oxygen |
22PHB |
69.5 |
23.5 |
28 |
Hex.14 |
8 |
5 |
31 |
For 1/4" hose |
25PHB |
9 |
34 |
For 5/14" hose |
For acetylene |
33PHB |
70.5 |
25.5 |
28 |
Hex.14 |
10.5 |
7 |
41 |
For 3/8" hose |
35PHB |
9 |
6 |
39 |
For 5/16" hose |
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Model |
Dimensions(mm) |
Weight
(g) |
Applications |
Ls |
¢D |
A |
Hs |
T |
¢Bs |
For oxygen |
22SM |
52 |
19.8 |
11 |
¢14×
Hex.12 |
PT1/4" |
7.5 |
51 |
PT1/4" |
For acetylene |
33SM |
54 |
22.6 |
11 |
¢17×
Hex.14 |
PT3/8" |
10 |
77 |
PT3/8" |
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Model |
Dimensions(mm) |
Weig
(g) |
Applications |
Lp |
C |
A |
HP |
T |
¢BP |
For oxygen |
22PFB |
48.5 |
23.5 |
10.5 |
Hex.19 |
M16×
1.5 |
5 |
36 |
For oxygen torch |
For acetylene |
33PFB |
48.5 |
25.5 |
10.5 |
Hex.19 |
M16×
1.5L |
7.5 |
41 |
For gas torch |
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