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Type WA41C Safety Valve

 

Safety Valves, angle type

Low lift safety valve

Metal to metal seated

Flanged connection acc. to ANSI B16.5

Balance bellows 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 1500
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) ≥1/20 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

 

Main Dimensions

 

WA41C150, WA41C150P, WA41C150R
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 4-19 124 130 350

Remark: 150Lb for outlet flange

 

 

WA41C300, WA41C300P, WA41C300R
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 6 4-15 15 89 60.5 35 12 1.6 4-15 90 90 320
3/4" x 1" D 117 82.5 43 16 10 4-19 25 108 79.5 51 15 1.6 4-15 96 92 330
1" x 1" D 124 89 51 18 6 4-19 25 108 79.5 51 15 1.6 4-15 100 100 350
1" x 2" E 124 89 51 18 6 4-19 50 152 120.5 92 18 1.6 4-19 115 105 350
11/2" x1 1/2" G 156 114.5 73 20 9 4-22 40 127 98.5 73 18 1.6 4-15 121 124 370
11/2" x2" G 156 114.5 73 20 9 4-22 50 152 120.5 92 18 1.6 4-19 121 124 370
2" x 3" J 165 127 92 22 8 8-19 80 190 152.5 127 22 1.6 4-19 124 130 390

Remark: 150Lb for outlet flange

 

 

WA41C1500
Nominal Diameter (in) Dimensions(mm)  Inlet flange 1500Lb
d0 D D1 D2 b t Z-Φd DN' D' D1' D2' b' t' Z'-Φd' L L1 H
1" x 1" D 150 101.6 51 29 10 4-26 25 124 89 51 1.8 1.6 4-19 125 125 360

Remark: 300Lb for outlet flange

 

Materials for main parts

 

NO Name of part Materials WA41H-C Materials WA41Y-P Materials WA41Y-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 Disc Holder 2Cr13 304 316
6 Bellows 340 304 316
7 Guide sleeve 2Cr13/ 304 304 316
8 Bonnet ZG230-450 ZG230-450 ZG230-450
9 Spring 50CrVA 50CrVA coated teflon 50CrVA coated teflon
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

WA41C

Vented bonnet with cap, Low Lift