系统完善 高效可靠

PRODUCTS

Type A41C Safety Valve

 

Safety Valves, angle type

Low lift safety valve

Metal to metal seated

Flanged connection acc. to ANSI B16.5

 

Applications:

Provided as safety device for protection against excessive pressure in pressure vessels.

Approved for gases, vapours and fluids.

Working temperatures: 

-60°C up to +200°C for stainless steel material

-29°C up to 300°C for cast steel material

 

Standards Compliance:

Design and Manufacture: API RP 520

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 38
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) ≥1/20 d0
Appropriate              temp. C (WCB)                                                      P, R (SS304, SS316) ≤300℃                                                              ≤200℃
Appropriate       Medium Air, Oil, Steam, 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

Main Dimensions

 

A41C150, A41C150P, A41C150R
Nominal Diameter (in) Dimensions(mm)  Inlet flange 150Lb
d0 D D1 D2 b t Z-Φd DN' D' D1' D2' b t Z'-Φd' L L1 H
1/2" x 1/2" D 89 60.5 35 12 5 4-15 15 89 60.5 35 12 1.6 4-15 90 90 260
3/4" x 1" D 98 70 43 14 5 4-15 25 108 79.5 51 15 1.6 4-15 96 92 280
1" x 1" D 108 79.5 51 15 5 4-15 25 108 79.5 51 15 1.6 4-15 100 100 290
1" x 2" E 108 19.5 51 15 5 4-15 50 152 120.5 92 18 1.6 4-19 115 105 290
11/2" x1 1/2" G 127 98.5 73 18 5 4-15 40 127 98.5 73 18 1.6 4-15 121 124 330
11/2" x2" G 127 98.5 73 18 5 4-15 50 152 120.5 92 18 1.6 4-19 121 124 330
2" x 3" J 152 120.5 92 18 5 4-19 80 190 152.5 127 22 1.6 4-19 124 136 350

Remark: 150Lb for outlet flange

 

 

A41C300, A41C300P, A41C300R
Nominal Diameter (in) Dimensions(mm)  Inlet flange 300Lb
d0 D D1 D2 b t Z-Φd DN' D' D1' D2' b t Z'-Φd' L L1 H
1/2" x 1/2" D 95 66.5 35 15 5 4-15 15 89 60.5 35 12 1.6 4-15 90 90 260
3/4" x 1" D 117 82.5 43 16 5 4-19 25 108 79.5 51 15 1.6 4-15 96 92 280
1" x 1" D 124 89 51 18 5 4-19 25 108 79.5 51 15 1.6 4-15 100 100 290
1" x 2" E 124 89 51 18 5 4-19 50 152 120.5 92 18 1.6 4-19 115 105 290
11/2" x1 1/2" G 156 114.5 73 20 5 4-22 40 127 98.5 73 18 1.6 4-15 121 124 330
11/2" x2" G 156 114.5 73 20 5 4-22 50 152 120.5 92 18 1.6 4-19 121 124 330
2" x 3" J 165 127 92 23 5 8-19 80 190 152.5 127 22 1.6 4-19 124 136 350

Remark: 150Lb for outlet flange

 

 

 

A41C600, A41C600P, A41C600R
Nominal Diameter (in) Dimensions(mm) Inlet flange  600Lb
d0 D D1 D2 b t Z-Φd DN' D' D1' D2' b t Z'-Φd' L L1 H
3/4" x 1" D 118 82.5 43 16 7 4-15 25 108 79.5 51 15 1.6 4-15 105 110 280
1" x 2" D 124 89 51 20 7 4-19 50 152 120.5 92 18 1.6 4-19 115 105 290
11/2" x1 1/2" F 156 114.5 73 22 7 4-22 40 127 98.5 73 18 1.6 4-15 147 162 330
11/2" x2" F 156 114.5 73 22 7 4-22 50 152 120.5 92 18 1.6 4-19 147 162 330

Remark: 150Lb for outlet flange

 

 

 

A41C900, A41C900P, A41C900R
Nominal Diameter (in) Dimensions(mm) Inlet flange  900Lb
d0 D D1 D2 b t Z-Φd DN' D' D1' D2' b t Z'-Φd' L L1 H
1" x 11/2" d0 150 101.6 51 28 7 4-25 40 156 114.5 73 20 1.6 4-22 125 125 320
11/2" x1 1/2" F 178 123.8 73 32 7 4-29 40 156 114.5 73 20 1.6 4-22 150 195 350

Remark: 300Lb for outlet flange

 

 

Materials for main parts

 

NO Name of part Materials A41H-C Materials A41Y-P Materials A41Y-R
1 Body WCB 304 316
2 Nozzle 2Cr13/ 304 304 316
3 Adjusting Ring 2Cr13/ 304 304 316
4 Disc 2Cr13/ 304 304 316
5 Guide sleeve 2Cr13/ 304 304 316
6 Bonnet ZG230-450 ZG230-450 ZG230-450
7 Spring 50CrVA 50CrVA coated teflon 50CrVA coated teflon
8 Stem 2Cr13 304 316
9 Adjusting bolt 45 2Cr13 2Cr13
10 Cap ZG200-400 ZG200-400 ZG200-400
Sealing surface of material "H" depositing D507,  "Y" depositing stellite

Essential:

Valves are delivered at a set pressure, therefore when ordering 

Please confirm set pressure, medium and temperature

 

TS

Safety accessory and Safety protection device 

Manufacture License of Special Equipment, People's republic of China

A41C

Closed bonnet with Cap, Low Lift