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Classification：Relief valve
Trade names：
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| Bring handle spring all opening type relief valve |
| Classification of the products: Series of the relief valve |
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The detailed materials of the products:
A28H suitable for working temperature ≤ degrees Centigrade of air , steam , water , nitrogen hydrogens mix equipment of medium such as being angry or at the pipeline, A28Y-P/10R8 is suitable for working temperature ≤ 200 degrees Centigrade of equipment or pipeline with corrosivity medium, as exceeding pressing protectors. |
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Main spare part material
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NO. |
Part name |
A28H material |
A28Y-P material |
A28Y-R8 material |
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1 |
The valve has body |
HT200 |
ZG1Cr18Ni9Ti |
CF8M |
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2 |
Valve seat |
35 |
ZG1Cr18Ni9Ti |
CF8M |
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3 |
Regulate and enclose |
2Cr13 |
1Cr18Ni9Ti |
316 |
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4 |
Valve one |
2Cr13 |
1Cr18Ni9Ti |
316 |
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5 |
Spring |
50CrVA |
50CrVA wraps up and covers the fluoroplastics |
50CrVA wraps up and covers the fluoroplastics |
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6 |
Valve stem |
2Cr13 |
2Cr13 |
316 |
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7 |
Adjust spiral shell's pole |
45 |
2Cr13 |
316 |
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8 |
Protect and cover |
ZG200-400 |
ZG200-400 |
CF8M |
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Seal the surface material |
Pile and weld D507 |
Pile and weld the base hard alloy of Co |
External dimension and size of connecting
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Nominal and open directly |
Size |
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do |
Rc |
G |
L |
L1 |
H |
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15 |
10 |
1/2" |
3/4" |
37 |
62 |
189 |
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20 |
12 |
3/4" |
1" |
40 |
65 |
196 |
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25 |
15 |
1" |
1 1 /4" |
45 |
72 |
277 |
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32 |
20 |
1 1 /4" |
1 1 /2" |
55 |
85 |
312 |
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40 |
25 |
1 1 /2" |
2" |
67 |
100 |
322 |
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50 |
32 |
2" |
2 1 /2" |
76 |
112 |
348 |
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65 |
40 |
2 1 /2" |
3" |
110 |
135 |
370 |
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80 |
60 |
3" |
4" |
110 |
145 |
410 |
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