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Classification：Relief valve
Trade names：
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| The valve flows excessivly safely |
| Classification of the products: Series of the relief valve |
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The detailed materials of the products:
AY42H , YA802Y type is it flow valve can use high-pressure water flooding pipeline of pump station for , as exceeding keeping protectors to overflow safely.
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Main performance norm
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Type |
Nominal pressure |
Open the pressure to grade |
Working temperature ( Degrees Centigrade) |
Suitable medium |
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AY42H-160 YA802Y-160 |
16.0 |
6.3- 16.0 |
200 |
Water , oil ,etc. |
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AY42H-250 YA802Y-250 |
25.0 |
10.0- 25.0 |
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AY42H-400 YA802Y-400 YA802Y-600 |
40.0-60.0 |
20.0- 60.0 |
Main spare part material
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NO. |
Part name |
Material |
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1 |
The valve has body |
Carbon steel |
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2 |
Valve seat |
Stainless steel |
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3 |
Valve one |
Stainless steel |
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4 |
The valve covering |
Weld one |
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5 |
Spring |
50CrVA |
External dimension and size of connecting
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Type |
Nominal and open directly |
Size |
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Rc |
ZG |
L |
L1 |
≈ H |
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YA802Y-600 |
15 |
1/2" |
1/2" |
52 |
90 |
250 |
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25 |
1" |
1" |
52 |
113 |
275 |
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40 |
1 1 /2" |
1 1 /2" |
52 |
157 |
336 |
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Type |
Nominal and open directly |
Size |
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D |
D1 |
K |
M |
Z-ød |
b |
L |
L1 |
Rc |
≈ H |
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AY42H-160
AY42H-250
AY42H-400 |
15 |
135 |
95 |
25 |
M48* 2 |
4-22 |
25 |
65 |
140 |
1/2" |
329 |
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25 |
165 |
115 |
30 |
M52* 2 |
6-26 |
28 |
80 |
150 |
1" |
447 |
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25 |
200 |
145 |
38 |
M80* 3 |
6-29 |
40 |
90 |
180 |
1 1 /2" |
485 |
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32 |
225 |
170 |
42 |
M100* 3 |
6-33 |
50 |
100 |
200 |
2 1 /2" |
570 |
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