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A48C Open Bonnet Plain Lever Type Safety Valve

Full lift safety valve, Standard safety valve for boiler, metal to metal seated, with plain type lifting device, Open bonnet, Flanged connection acc. to ANSI B16.5, Approved for gases, vapours and fluids.

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A48C Open Bonnet Plain Lever Tpye Safety Valve


Safety Valves/pressure safety valves, angle type

Full lift safety valve
Standard safety valve for boiler, open bonnet,
metal to metal seated, with plain type lifting device,
Inlet: Flanged connection acc. to ANSI B16.5
Outlet: 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: Lower than 300°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
Body strength Ps(Mpa) 3.0 7.5 15
Set pressure Pk(Mpa) 0.1-2 1.6-5 3.2-10
Seal pressure Pm(Mpa) 90%Pk
Reseation pressure Ph(Mpa) ≥90%Pk
Relieving Pressure Pp(Mpa) ≤1.03Pk
Lift height H(mm) ≥1/4 d0
Appropriate  temp. ≤300℃
Appropriate Medium Fluids, Steam

 

Code of throat diameter

Code Diameter Code Diameter
D 10 L 50
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 A48Y-C Materials A48Y-P Materials A48Y-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 "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






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