Wenzhou Starry Valve Co., Ltd. is one of the most reliable manufacturers and suppliers of pressure safety valve in China. We are committed to providing high quality customized valves with low price. If you're going to buy bulk durable pressure safety valve, welcome to get quotation from our factory.
1. Closed bonnet keeps spring chamber free of dust and foreign debris
2. Spring-loaded full-lift design for large-capacity overpressure relief
3. Stellite 6 hard-faced sealing for erosion resistance & tight sealing
4. Adjustable nozzle ring for blow-down adjustment
5. Optional lifting lever for field test
6. API 520 / API 526 compliant, reliable reseating performance
7. Suitable for high-pressure gas, compressed air and hydrocarbon service
Features
1. Closed-bonnet structure prevents dust and external contaminants entering spring chamber.
2. Spring-loaded full-lift construction, large discharge capacity for fast over-pressure relief.
3. Sealing surfaces hard-faced with Stellite 6 cobalt-based alloy, excellent erosion resistance and tight shut-off.
4. Adjustable nozzle ring for blow-down pressure tuning to meet various working conditions.
5. Optional lifting lever for on-site functional inspection.
6. Strictly manufactured to API 520 & API 526, stable reseating performance after pressure relief.
Applications
Pressure safety valve is used for overpressure protection of high-pressure pressure vessels and pipelines. It automatically opens to discharge medium once system pressure exceeds set pressure, preventing equipment damage and ensuring safety of plant and personnel.Suitable media: high-pressure process gas, compressed air, nitrogen, hydrogen, hydrocarbon oil-gas.Pressure safety valve widely applied in oil-refinery, chemical industry, coal chemical, storage tanks, compressor packages and high-pressure piping systems.
A42Y-160/320 type are used for the equipment and pipeline ofthe air,N2,H2 mixed gas, etc. medium what the workingtemperature are less than 200C.A42Y-160P/320P.A42Y160R/320R type are used for the equipment and pipeline of thequality with corrode medium what the working temperature areless thorn 200°C.Take for extra pressure protection devices.Flange connecting dimensions of comply with Standard ofJB/T2769-2008.
Materials For Main Parts
|
NO. |
Name of part |
Materials |
||
|
A48Y-C |
A44Y-P |
A44Y-R |
||
|
1 |
Flange |
35/35CrMoA |
20Cr13 |
304 |
|
2 |
Seat |
20Cr13 |
304 |
316 |
|
3 |
Body |
40 |
304 |
316 |
|
4 |
Adjusting ring |
20Cr13 |
304 |
316 |
|
5 |
Disc |
20Cr13 |
304 |
316 |
|
6 |
Disc holder |
20Cr13 |
304 |
316 |
|
7 |
Guide sleeve |
20Cr13 |
304 |
316 |
|
8 |
Bonnet |
ZG230-450 |
ZG230-450 |
ZG230-450 |
|
9 |
Stem |
20Cr13 |
304 |
304 |
|
10 |
Spring |
50CrVA |
50CrVA Coated Teflon |
50CrVA Coated Teflon |
|
11 |
Adjusting bolt |
45 |
20Cr13 |
20Cr13 |
|
12 |
Cap |
ZG200-400 |
ZG200-400 |
ZG200-400 |
|
Sealing surface of material |
Co Depositing stelite |
|||
Pressure Safety Valve Dimensions (mm)
|
Type |
DN |
do |
d |
M |
D |
K |
Z-φd |
b |
d1 |
M1 |
D1 |
kl |
Z1-φdl |
b1 |
L |
L1 |
≈H |
|
A42Y-160 |
15 |
8 |
20 |
M24×2 |
60 |
95 |
3-18 |
20 |
29 |
M42×2 |
80 |
115 |
4-18 |
22 |
95 |
100 |
220 |
|
20 |
8 |
27 |
M33×2 |
68 |
105 |
3-18 |
20 |
29 |
M42×2 |
80 |
115 |
4-18 |
22 |
95 |
100 |
220 |
|
|
25 |
14 |
28 |
M33×2 |
68 |
105 |
3-18 |
20 |
50 |
M64×3 |
115 |
165 |
6-26 |
32 |
150 |
150 |
280 |
|
|
32 |
15 |
37 |
M42×2 |
80 |
115 |
4-18 |
22 |
50 |
M64×3 |
115 |
165 |
6-26 |
32 |
150 |
150 |
390 |
|
|
40 |
20 |
47 |
M52×2 |
115 |
165 |
6-26 |
28 |
65 |
M80×3 |
145 |
200 |
6-29 |
40 |
180 |
165 |
495 |
|
|
50 |
25 |
59 |
M64×3 |
115 |
165 |
6-26 |
32 |
80 |
M100×3 |
170 |
225 |
6-33 |
50 |
190 |
190 |
510 |
|
|
A42Y-320 |
15 |
8 |
27 |
M33×2 |
68 |
105 |
3-18 |
20 |
29 |
M42×2 |
80 |
115 |
4-18 |
22 |
95 |
100 |
220 |
|
20 |
8 |
30 |
M33×2 |
75 |
110 |
3-18 |
22 |
29 |
M42×2 |
80 |
115 |
4-18 |
22 |
95 |
100 |
220 |
|
|
25 |
14 |
35 |
M42×2 |
80 |
115 |
4-18 |
22 |
50 |
M64×3 |
115 |
165 |
6-26 |
32 |
150 |
150 |
280 |
|
|
32 |
15 |
41 |
M48×2 |
95 |
135 |
4-22 |
25 |
50 |
M64×3 |
115 |
165 |
6-26 |
32 |
150 |
150 |
390 |
|
|
40 |
20 |
58 |
M64×2 |
115 |
165 |
6-26 |
32 |
65 |
M80×3 |
145 |
200 |
6-29 |
40 |
180 |
165 |
495 |
|
|
50 |
25 |
70 |
M80×2 |
145 |
200 |
6-29 |
40 |
80 |
M100×3 |
170 |
225 |
6-33 |
50 |
190 |
190 |
510 |
|
|
A42Y-400 |
32 |
15 |
41 |
M48×2 |
95 |
135 |
4-22 |
25 |
50 |
M64×3 |
115 |
165 |
6-26 |
32 |
190 |
190 |
397 |
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