Zhejiang Tianhe
Valve Co.,Ltd.
Safety Valve,Gate Valve,Globe Vavle,Check Valve,Ball Valve
Butterfly Valve,Forged Steel Valve
Safety Valve,Gate Valve,Globe Vavle,Check Valve,Ball Valve
Butterfly Valve,Forged Steel Valve
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API A46C pilot operated pressure relief valve
Main Dimensions
Standards Compliance:
Design and Manufacture: API RP 520/ASME VIII
Face to Face(end to end): API 526
Test and Inspection: API 527
Main property specifiecation
Mormal Pressure
PN
150
300
600
900
150
Body strength
Ps(Mpa)
3.0
7.5
15
22.5
37.5
Set pressure
Pk(Mpa)
0.1-2
1.6-5
3.2-10
8-25
10-25
Seal pressure
Pm(Mpa)
90%Pk
Reseation pressure
Ph(Mpa)
≥90%Pk
Relieving Pressure
Pp(Mpa)
≤1.1Pk
Lift height
H(mm)
≥1/4 d0
Appropriate temp.
≤250℃
Appropriate Medium
Air, oil, water, corrosive medium
Code of throat diameter
Code
Diameter
Code
Diameter
D
10
L
20
E
13
M
55
F
16
N
60
G
20.5
P
72
H
26
Q
96
J
33
R
115
K
40
T
148
|
Size
|
Orifice
|
Inlet LB
|
Outlet LB
|
L
|
L1
|
C
|
Size
|
Orifice
|
Inlet LB
|
Outlet LB
|
L
|
L1
|
C
|
|
1" X 2"
|
D.E.F
|
150
|
150
|
115
|
105
|
106
|
2" x 3"
|
G.H.J
|
150
|
150
|
130
|
130
|
457
|
|
300
|
150
|
115
|
105
|
106
|
300
|
150
|
130
|
130
|
457
|
||||
|
600
|
150
|
115
|
105
|
106
|
600
|
150
|
130
|
130
|
457
|
||||
|
900
|
300
|
121
|
125
|
508
|
900
|
300
|
167
|
167
|
559
|
||||
|
1500
|
300
|
121
|
125
|
508
|
1500
|
300
|
167
|
167
|
559
|
||||
|
2500
|
300
|
121
|
125
|
508
|
2500
|
300
|
178
|
178
|
559
|
||||
|
11/2" x2"
|
D.E.F
|
150
|
150
|
121
|
124
|
432
|
3" x4"
|
J.K.L
|
150
|
150
|
156
|
156
|
483
|
|
300
|
150
|
121
|
124
|
432
|
300
|
150
|
156
|
156
|
483
|
||||
|
600
|
150
|
121
|
124
|
432
|
600
|
150
|
162
|
162
|
483
|
||||
|
900
|
300
|
140
|
149
|
533
|
900
|
300
|
190
|
190
|
610
|
||||
|
1500
|
300
|
140
|
149
|
533
|
1500
|
300
|
190
|
190
|
610
|
||||
|
2500
|
300
|
140
|
149
|
533
|
|
||||||||
|
11/2" x3"
|
G.H
|
150
|
150
|
124
|
130
|
457
|
4" x 6"
|
L.M.N.P
|
150
|
150
|
229
|
181
|
559
|
|
300
|
150
|
124
|
130
|
457
|
300
|
150
|
229
|
181
|
559
|
||||
|
600
|
150
|
124
|
130
|
457
|
600
|
150
|
229
|
181
|
559
|
||||
|
900
|
300
|
171
|
162
|
559
|
900
|
300
|
233
|
249
|
711
|
||||
|
1500
|
300
|
171
|
162
|
559
|
1500
|
300
|
233
|
249
|
711
|
||||
|
2500
|
300
|
171
|
162
|
559
|
2500
|
600
|
264
|
249
|
711
|
||||
|
|
|||||||||||||
|
6" x8"
|
Q.R
|
150
|
150
|
240
|
240
|
635
|
8" x10"
|
T
|
150
|
150
|
279
|
276
|
711
|
|
300
|
150
|
240
|
240
|
635
|
300
|
150
|
279
|
276
|
711
|
||||
|
600
|
150
|
240
|
240
|
635
|
600
|
150
|
279
|
297
|
737
|
||||
 Safety Valve |
Globe Valve |
Check Valve |
Ball Valve |
Forged Steel Valve |
Gate Valve |
| Butterfly Valve |
Plug Valve |
||||