Spring low lift safety valve is widely used in petroleum, gas, electricity, chemical industry, etc. It is applicable for water, steam, gas, oil or corrosive medium. Working temperature is not higher than350℃. When the pressure in pipes is higher than allowed pressure, safe valve will open to decompress to ensure the safety of pipes. The valve will close to ensure that equipment runs effectively, when the pressure is decreased to allowed value.
Characteristics of spring low lift safety valve
1. The structure is helpful for cooling.
2. Spring is made of high quality spring steel to enhance service life and stability.
3. The structure of disc and base is convenient for maintenance.
Performance
|
Nominal Diameter DN(mm) |
DN20-300 |
|
Applicable Temperature |
≤350°C |
|
Applicable Medium |
Water, steam, oil |
Materials
|
Base |
2Cr13, CF8, CF8M, CF3M |
|
Body |
WCB, CF8, CF8M, CF3M |
|
Adjusting ring |
2Cr13, 304SS, 316SS,316L |
|
Disc holder |
2Cr13, 304SS, 316SS,316L |
|
Disc |
2Cr13, 304SS, 316SS,316L |
|
Bellows |
304SS, 316SS,316L |
|
Guide sleeve |
2Cr13, 304SS, 316SS,316L |
|
Bonnet |
WCB, CF8, CF8M, CF3M |
|
Spring |
50CrVa, 50CrVa+TEFLON |
|
Stem |
2Cr13, 316SS,316L |
|
Stretching screw |
45#steel, 2Cr13 |
|
Cover |
ZG200 |
|
Seal face |
Cemented carbide |
Dimensions
|
Nominal Pressure(MPa) |
Nominal Diameter(mm) |
do |
DN' |
L |
L1 |
≈H |
|
4.0 |
20 |
15 |
20 |
100 |
85 |
270 |
|
25 |
20 |
25 |
100 |
85 |
270 |
|
|
32 |
25 |
32 |
115 |
100 |
312 |
|
|
40 |
32 |
40 |
120 |
110 |
320 |
|
|
50 |
40 |
50 |
135 |
120 |
390 |
|
|
65 |
50 |
65 |
140 |
130 |
395 |
|
|
80 |
65 |
80 |
160 |
135 |
400 |
|
|
100 |
80 |
100 |
170 |
160 |
600 |
|
|
125 |
100 |
125 |
190 |
190 |
620 |
|
|
150 |
125 |
150 |
205 |
195 |
625 |
|
|
200 |
150 |
200 |
240 |
230 |
798 |
|
|
250 |
200 |
250 |
350 |
320 |
981 |
|
|
300 |
250 |
300 |
350 |
320 |
1005 |
Spring Low Lift Safety Valve, WCB, PN4.0
Stainless Steel Spring Low Lift Safety Valve, DN15-25
Cast Iron Low Lift Safety Valve, Ht200
Twin Spring Safety Valve, DN50-150mm
Stainless Steel Spring Safety Valve, DN25-150mm
Pilot Operated Safety Valve, WCB, DN25-200
Full Open Spring Safety Valve with Radiator, DN20-200
Steel Lift Check Valve
