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A42C Conventional Type Safety Valve

Safety Valve/pressure safety valve, angle type full lift safety valveConventional type, Standard safety valve for fluids and gasmetal to metal seatedFlanged connection acc. to ANSI B16.5

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A42C conventional type Safety Valve


Safety Valve/pressure safety valve, angle type

full lift safety valve
Conventional type, Standard safety valve for fluids and gas
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 and fluids
Working temperatures: -60°C up to +300°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) ≥1/4 d0
Appropriatetemp. 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

 

Materials for main parts

NO Name of part Materials A42H-C Materials A42Y-P Materials A42Y-R
1 Body WCB CF8 CF8M
2 Nozzle 2Cr13/ 304 CF8 CF8M
3 Adjusting Ring 2Cr13/ 304 304 316
4 Disc 2Cr13/ 304 304 316
5 Guide sleeve 2Cr13/ 304 304 316
6 Bonnet WCB CF8 CF8M
7 Spring ASTM 6150 ASTM 6150 coated teflon ASTM 6150 coated teflon
8 Stem 2Cr13 304 316
9 Adjusting bolt 45 2Cr13 2Cr13
10 Cap A126 CF8 CF8M
11 Bellows 304 316 316

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

 

Main Dimensions



Remark: 150Lb for outlet flange
 



Remark: 150Lb for outlet flange
 



Remark: 150Lb for outlet flange



Remark: 150Lb for outlet flange
 


Remark: 300Lb for outlet flange






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