Safety Valves

Coventional Type Safety Valve

150LB~2500LB
1″~10″ (25~250mm)
WCB, S.S.304, S.S.316

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Product information

Coventional type safety valve is the ideal over pressure protection device for pressure equipment, pressure vessel and pipeline. When the medium pressure increases and exceeds the allowed pressure, the safety valve will open automatically to discharge fully, protecting the medium pressure from being increased continually. When the medium pressure reduces to the set up pressure, the relief valve will close timely, making sure the equipment or the pipeline work safely.
The bonnet of full sealed safety valve is sealed, preventing the dust or foreign matters from invading into the bonnet and preventing the toxic or inflammable mediums overflow from the bonnet. Open type safety valve is good for reducing the temperature in the bonnet for its bonnet is open, which is mainly applicable to steam pipeline and vessel. The coventional type safety valve with radiator is mainly applicable to the conditions of mediums with temperature 300℃ – 570℃.
The spring loaded safety valve with lever can be open with lever when the medium pressure reaches more than 75% of discharge pressure. Flowspec Luokai can produce the coventional type safety valve in accordance with ISO4126, API RP520, JIS8210, DIN3320.

1. FEATURES

  • Safety valves are mostly precision castings, compact structure, nice appearance, bright surface.
  • Valve seat and body are separated type, seat is easy processing, and sealing surface is easy to grind into mirror surface, making sure on the valve sealing, convenient for disassembly and repair.
  • Reasonable designed disc holder is well-matched with nozzle ring, convenient for adjusting, which makes the safety valve discharge quickly, back to seat timely, achieving in on-off pressure difference.
  • Both valve seat and disc are Stellite welded, wear-resistance, erosion resistance, extending the valve service life.
  • Back pressure balance safety valve adopts high quality bellows, avoiding the effect of back pressure against discharge pressure.
  • The spring is processed with 2 x 24 hours constant temperature treatment, making sure the spring keep stable rigidity and correct lift in working condition.
  • Taking serious pressure testing on the valve body and seat, making sure that the safety valve work safely and reliably.

3. STANDARDS

  • Design & manufacturing: ISO4126, API RP520, JIS8210, DIN3320
  • Flanged ends: ANSI B16.5a, JIS B2212-2216, DIN2546-2551
  • Face to face: API 526, JIS B2001, DIN3202
  • Inspection & testing: API 527

2. TECHNICAL SPECIFICATIONS

  • Class rating: 150LB~2500LB
  • Size: 1″~10″ (DN25~250mm)
  • Materials: steel A216 WCB, stainless steel A351 CF8, CF8M, CF3M, Monel, Hast. C
  • Set pressure tolerance: ≤±3%
  • Overpressure: ≤10%
  • Blowdown: ≤15%

4. APPLICATIONS

  • Applicable medium: steam, air, gas, LPG, oil, corrosive liquids
  • Applicable temperature: -29℃~+350℃
  • Applicable fields: boiler, oil & gas field, steam equipment, oil vessel, pressure vessel


型号规格、压力级、安装尺寸及重量
Type and Size、Class、Exeternal Dimension and Weight
喉径D规格尺寸External Dimension of D orifice area
型号
Type		 规格Size 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸 (mm) External Dimension 重量
Weight
(Kg)
D=φ1071mm² L L1 X H
编号No . 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)
B
(WA42型)		 1 D2 0101 150 150 1.96 1.58 114.5 105.0 39 340 375 395 17
1 D2 0301 300 150 1.96 1.58 114.5 105.0 39 340 375 395 18
1 D2 03a01 300 150 1.96 1.58 114.5 105.0 39 340 375 395 18
1 D2 0601 600 150 1.96 1.58 114.5 105.0 39 340 375 395 19
1½D2 0903 900 300 4.13 3.45 139.5 105.0 51 415 425 445 32
1½D2 1503 1500 300 4.13 3.45 139.5 105.0 51 415 425 445 34
1½D3 2503 2500 300 5.10 3.45 178.0 139.5 64 475 495 500 36
喉径E规格尺寸 External Dimension of E orifice area
型号
Type		 规格Size 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸 (mm) External Dimension 重量
Weight
(Kg)
E=φ13
126mm²		 L L1 x H
编号No. 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 1 E 2 0101 150 150 1.96 1.58 114.5 105.0 39 340 375 395 17
1 E 2 0301 300 150 1.96 1.58 114.5 105.0 39 340 375 395 18
1 E 2 03a01 300 150 1.96 1.58 114.5 105.0 39 340 375 395 18
1 E 2 0601 600 150 1.96 1.58 114.5 105.0 39 340 375 395 19
1½E 2 0903 900 300 4.13 3.45 139.5 105.0 51 415 425 445 32
1½E 2 1503 1500 300 4.13 3.45 139.5 105.0 51 415 425 445 34
1½E 3 2503 2500 300 5.10 3.45 178.0 139.5 64 475 495 500 36

型号
Type		 规格Size 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸 (mm)External Dimension 重量
Weight
(Kg)
F=φ16198mm² L L1 X H
编号
No.		 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 1½F2 0101 150 150 1.96 1.58 120.5 124.0 44 340 375 395 20
1½F2 0301 300 150 1.96 1.58 120.5 124.0 44 340 375 395 23
1½F2 03a01 300 150 1.96 1.58 152.5 124.0 44 400 430 440 29
1½F2 0601 600 150 1.96 1.58 152.5 124.0 44 400 430 440 29
1½F3 0903 900 300 5.10 3.45 165.0 124.0 51 475 495 500 35
1½F3 1503 1500 300 5.10 3.45 165.0 124.0 51 475 495 500 37
1½F3 2503 2500 300 5.10 3.45 178.0 139.5 64 475 495 500 42
1½F2½ 0903⋆ 900 300 5.10 3.45 152.5 124.0 51 450 470 480 35
1½F2½ 1503⋆ 1500 300 5.10 3.45 152.5 124.0 51 450 470 480 37
喉径G规格尺寸 External Dimension G orifice area
型号
Type		 规格
Size		 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸(mm)External Dimension 重量
Weight
(Kg)
G=φ20
324mm²		 L L1 X H
编号No . 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 1½G3 0101 150 150 1.96 1.58 120.5 124.0 44 377 394 415 24
1½G3 0301 300 150 1.96 1.58 120.5 124.0 44 377 394 415 26
1½G3 03a01 300 150 1.96 1.58 152.5 124.0 44 416 445 455 34
1½G3 0601 600 150 1.96 1.58 152.5 124.0 44 416 445 455 34
1½G3 0903 900 300 5.10 3.24 165.0 124.0 51 475 495 500 38
2 G 3 1503 1500 300 5.10 3.24 171.5 155.5 70 475 495 500 42
2 G 3 2503 2500 300 5.10 3.24 171.5 155.5 70 475 495 500 46
1½ G 2½ 0101 150 150 1.96 1.58 120.5 124.0 44 385 420 430 26
1½ G 2½ 0301 300 150 1.96 1.58 120.5 124.0 44 385 420 430 26
1½ G 2½ 03a01 300 150 1.96 1.58 152.5 124.0 44 375 416 420 34
1½ G 2½ 0601 600 150 1.96 1.58 152.5 124.0 44 375 416 420 34
1½ G 2½ 0903 900 300 5.10 3.24 152.5 124.0 51 450 470 480 38
喉径H规格尺寸 External Dimension of H orifice area
型号
Type		 规格
Size		 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸 (mm) External Dimension 重量
Weight
(Kg)
H=φ26
506mm²		 L L1 X H
编号
No .		 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 1½H3 0101 150 150 1.96 1.58 124.0 130.0 43 377 394 415 26
1½H3 0301 300 150 1.96 1.58 124.0 130.0 43 377 394 415 28
2 H 3 03a01 300 150 1.96 1.58 124.0 130.0 46 377 394 415 31
2 H 3 0601 600 150 1.96 1.58 162.0 154.0 46 420 450 460 38
2 H 3 0901 900 150 1.96 1.58 162.0 154.0 59 446 465 475 45
2 H 3 1503 1500 300 5.10 2.86 162.0 154.0 59 446 465 475 50
喉径J规格尺寸 External Dimension of J orifice area
型号
Type		 规格
Size		 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸(mm) External Dimension 重量
Weight
(Kg)
J=φ33
830mm²		 L L1 X H
编号
No .		 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 2 J 3 0101 150 150 1.96 1.58 124.0 136.5 43 417 445 450 33
2 J 3 0301 300 150 1.96 1.58 124.0 136.5 43 417 445 450 35
3 J 4 03a01 300 150 1.96 1.58 181.0 184.0 55 479 512 520 60
3 J 4 0601 600 150 1.96 1.58 181.0 184.0 57 479 512 520 62
3 J 4 0901 900 150 1.96 1.58 181.0 184.0 68 602 655 660 75
3 J 4 1503 1500 300 4.13 1.58 181.0 184.0 68 602 655 660 78
2½J4 03a01 300 150 1.96 1.58 143.0 136.5 52 430 457 465 40
2½J4 0601 600 150 1.96 1.58 171.5 155.5 54 535 555 565 55
喉径K规格尺寸 External Dimension of K orifice area
型号
Type		 规格
Size		 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸(mm) External Dimension 重量
Weight
(Kg)
K=φ40
1186mm²		 L L1 X H
编号No . 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 3 K 4 0101 150 150 1.96 1.03 162.0 155.5 54 479 515 520 60
3 K 4 0301 300 150 1.96 1.03 162.0 155.5 54 479 515 520 62
3 K 4 03a01 300 150 1.96 1.03 162.0 155.5 54 479 515 520 62
3 K 4 0601 600 150 1.96 1.38 181.0 184.0 54 560 560 565 70
3 K 6 0901 900 150 1.96 1.38 216.0 198.5 68 720 775 750 110
3 K 6 1503 1500 300 4.13 1.38 216.0 197.0 68 720 775 750 114
喉径L规格尺寸 External Dimension of L orifice area
型号
Type		 规格Size 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸(mm) External Dimension 重量
Weight
(Kg)
L=φ50
1841mm²		 L L1 X H
编号
No.		 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 3 L 4 0101 150 150 1.96 0.69 165.0 155.5 51 479 515 520 63
3 L 4 0301 300 150 1.96 0.69 165.0 155.5 51 479 515 520 65
4 L 6 03a01 300 150 1.96 1.17 181.0 179.5 54 630 640 650 105
4 L 6 0601 600 150 1.96 1.17 203.0 179.5 60 630 640 650 115
4 L 6 0901 900 150 1.96 1.17 222.0 197.0 75 740 750 760 240
4 L 6 1501 1500 150 1.96 1.17 222.0 197.0 75 740 750 760 245
喉径M规格尺寸External Dimension of M orifice area
型号
Type		 规格
Size		 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸 (mm) External Dimension 重量
Weight
(Kg)
L L1 X H
M=φ55
2323mm²		 编号
No.		 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 4 M 6 0101 150 150 1.96 0.55 184.0 178.0 54 630 640 650 112
4 M 6 0301 300 150 1.96 0.55 184.0 178.0 54 630 640 650 115
4 M 6 03a01 300 150 1.96 1.10 184.0 178.0 54 630 640 650 115
4 M 6 0601 600 150 1.96 1.10 203.0 178.0 62 630 640 650 130
4 M 6 0901 900 150 1.96 1.10 222.0 197.0 65 740 750 760 240
喉径N规格尺寸 External Dimension of N orifice area
型号
Type		 规格
Size		 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸 (mm)External Dimension 重量
Weight
(Kg)
L L1 X H
N=φ60
2800mm²		 编号No. 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 4 N 6 0101 150 150 1.96 0.55 209.5 197.0 54 630 640 650 115
4 N 6 0301 300 150 1.96 0.55 209.5 197.0 54 630 640 650 120
4 N 6 03a01 300 150 1.96 1.10 209.5 197.0 54 630 640 650 120
4 N 6 0601 600 150 1.96 1.10 222.0 197.0 60 740 750 760 130
4 N 6 0901 900 150 1.96 1.10 222.0 197.0 60 740 750 760 215
喉径P规格尺寸 External Dimension of P orifice area
型号
Type		 规格Size 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸 (mm)External Dimension 重量
Weight
(Kg)
P=φ72
4116mm²		 L L1 X H
编号
No.		 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 4 P 6 0101 150 150 1.96 0.55 228.5 181.0 54 630 640 650 117
4 P 6 0301 300 150 1.96 0.55 228.5 181.0 54 630 640 650 124
4 P 6 03a01 300 150 1.96 1.03 254.0 225.5 54 700 710 720 124
4 P 6 0601 600 150 1.96 1.03 254.0 225.5 65 740 750 760 210
4 P 6 0901 900 150 1.96 1.03 254.0 225.5 65 740 750 760 250
喉径Q规格尺寸 ExternalDimension of Q orifice area
型号
Type		 规格Size 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸(mm)External Dimension 重量
Weight
(Kg)
Q=φ96
7129mm²		 L L1 X H
编号
No.		 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 6 Q 8 0101 150 150 0.79 0.48 241.5 239.5 59 685 700 700 151
6 Q 8 0301 300 150 0.79 0.48 241.5 239.5 59 765 810 810 208
6 Q 8 03a01 300 150 0.79 0.79 241.5 239.5 59 765 810 810 215
6 Q 8 0601 600 150 0.79 0.79 241.5 239.5 75 835 920 920 255
喉径R规格尺寸 External Dimension of R orifice area
型号
Type		 规格Size 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 外形尺寸(mm)External Dimension 重量
Weight
(Kg)
R=φ115
10323mm²		 L L1 X H
编号No . 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 6 R 8 0101 150 150 0.41 0.41 241.5 239.5 59 685 700 700 160
6 R 8 0301 300 150 0.41 0.41 241.5 239.5 59 765 810 810 230
6 R 10 03a01 300 150 0.68 0.68 266.5 239.5 59 890 940 960 280
6 R 10 0601 600 150 0.68 0.68 266.5 239.5 70 890 940 960 290
喉径T规格尺寸 External Dimension of T orifice area
型号
Type		 规格Size 法兰磅级
Flange Class		 38℃最高背压
Back Press.
Limit 38℃
(MPa)		 安装尺寸(mm) 重量
Weight
(Kg)
T=φ146
16774mm²		 L L1 X H
编号
No .		 进口(Lb)
Inlet		 出口(Lb)
Outlet		 O B B
A42		 C
A48		 E
A44
O
(A42、A48、
A44型)

B
(WA42型)

 8 T 10 0101 150 150 0.20 0.20 279.5 276.0 65 890 940 960 400
8 T 10 0301 300 150 0.20 0.20 279.5 276.0 65 890 940 960 410
8 T 10 03a01 300 150 0.41 0.41 279.5 276.0 65 890 940 960 410
8 T 10 03b01 300 150 0.68 0.68 279.5 276.0 65 890 940 960 410

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