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Type A42C Safety Valve

 

Safety Valves, angle type

 

Full lift safety valve

Standard safety valve for fluids

Metal to metal seated

Flanged connection acc. to ANSI B16.5

Balance bellow safety valve

 

Applications:

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

"Approved for  gases, vapours and fluids."

Working temperatures: -29°C up to +200°C

    

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) ≥1/4 d0
Appropriate                 temp. ≤200℃
Appropriate       Medium C (WCB)                                                      P, R (SS304, SS316) Gas, Liquid                                                  Nitric, Acetic Acid, Gas, Liquid

 

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

 

Remark: 150Lb for outlet flange

 

WA41C600, WA41C600P, WA41C600R
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 117 82.5 43 16 7 4-19 25 108 79.5 51 15 1.6 4-15 96 92 330
1" x 2" D 124 89 51 19 7 4-19 50 152 120.5 92 18 1.6 4-19 115 105 340
11/2" x 2" F 156 114.5 73 22 7 4-22 50 152 120.5 92 18 1.6 4-19 152 124 360
11/2" x 21/2" F 156 114.5 73 22 7 4-22 65 178 139.5 105 20 1.6 4-19 152 124 380
11/2" x3" F 156 114.5 73 22 7 4-22 80 190 152.5 127 22 1.6 4-19 152 124 380
2" x21/2" H 165 127 92 26 7 8-19 65 178 139.5 105 20 1.6 4-19 162 154 390
2" x 3" H 165 127 92 26 7 8-19 80 190 152.5 127 22 1.6 4-19 162 154 390
21/2" x 4" K 190 149 100 29 7 8-22 100 229 190.5 157 24 1.6 8-19 143 165 390
3" x 4" K 210 168 127 32 10 8-22 100 229 190.5 157 24 1.6 8-19 162 155 460
4" x 6" N 273 216 157 38 10 8-25 150 279 241.5 216 26 1.6 8-22 210 200 540
6" x 8" P 356 292 216 46 10 12-29 200 343 298.5 270 29 1.6 8-22 241 240 780

Remark: 150Lb for outlet flange

 

Materials for main parts

 

NO Name of part Materials WA42H-C Materials WA42Y-P Materials WA42Y-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

WA42C

Vented bonnet with cap