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Type A48SC - Safety Valve

Safety Valves, angle type

Full lift safety valve

Standard safety valve for fluids

Metal to metal seated, with lifting device,

Inlet: Flanged connection acc. to ANSI B16.5

Outlet: Flanged connection acc. to ANSI B16.5

Open bonnet, with radiator

Applications:

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

Approved for gases, vapours and fluids.

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 PressurePN15030060090015002500
Body strengthPs(Mpa)3.07.51522.538.063
Set pressurePk(Mpa)0.1-21.6-53.2-108-1510-2516-40
Seal pressurePm(Mpa)90%Pk
Reseation pressurePh(Mpa)≥90%Pk
Relieving PressurePp(Mpa)≤1.03Pk
Lift heightH(mm)≥1/4 d0
Appropriate                 temp.C≤420℃
I≤500℃
V≤540℃
Appropriate       MediumFluids, Steam


Code of throat diameter

CodeDiameterCodeDiameter
D10L50
E13M55
F16N60
G20.5P72
H26Q96
J33R115
K40T148


Main Dimensions

A48SC150, A48SC150I, A48SC150V
Nominal Diameter (in)Dimensions(mm)  Inlet flange 150Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
1/2" x 3/4"D8960.5351254-1520987043141.64-159090380
3/4" x 1"D9870431454-152510879.551151.64-159692390
1" x 11/2"D10879.5511554-154012798.573181.64-15115105395
1" x 2"D10879.5511554-1550152120.592181.64-19115105395
11/2" x 2"G12798.5731854-1550152120.592181.64-19121124420
11/2" x 21/2"G12798.5731854-1565178139.5105201.64-19121124420
11/2" x3"G12798.5731854-1580190152.5127221.64-19124130430
2" x21/2"H152120.5921854-1965178139.5105201.64-19124130460
2" x 3"J152120.5921854-1980190152.5127221.64-19124130460
21/2" x 4"J178139.51052054-19100229190.5157241.68-19143137480
3" x 4"L190152.51272254-19100229190.5157241.68-19162156430
4" x 6"N229190.515724108-19150279241.5216261.68-22210197610
6" x 8"P279241.521626108-22200343298.5270291.68-22241240780
8" x10"R343298.527029108-22250406362324311.612-25279276840
12" x14"T483432381321012-25350533476413351.612-29370360980

Remark: 150Lb for outlet flange


A48SC300, A48SC300I, A48SC300V
Nominal Diameter (in)Dimensions(mm)  Inlet flange  300Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
1/2" x 3/4"D9566.5351554-1520987043141.64-159090380
3/4" x 1"D11782.5431654-192510879.551151.64-159692390
1" x 11/2"D12489511854-194012798.573181.64-15115105395
1" x 2"D12489511854-1950152120.592181.64-19115105395
11/2" x 2"F156114.5732054-2250152120.592181.64-19121124420
11/2" x 21/2"F156114.5732054-2265178139.5105201.64-19121124420
11/2" x3"F156114.5732054-2280190152.5127221.64-19124130430
2" x21/2"H165127922258-1965178139.5105201.64-19124130460
2" x 3"H165127922258-1980190152.5127221.64-19124130460
21/2" x 4"J1901491052458-22100229190.5157241.68-19143137480
3" x 4"L210168.51272858-22100229190.5157241.68-19162156430
4" x 6"N25420015732108-22150279241.5216261.68-22210197610
6" x 8"P318270216381012-22200343298.5270291.68-22241240780
8" x10"Q381330270421012-25250406362324311.612-25279276840

Remark: 150Lb for outlet flange


A48SC600, A48SC600I, A48SC600V
Nominal Diameter (in)Dimensions(mm)  Inlet flange  600Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
3/4" x 1"D11882.5431674-192510879.551151.64-159692400
1" x 2"D12489511974-1950152120.592181.64-19115105420
11/2" x 2"F156114.5732274-2250152120.592181.64-19152124440
11/2" x 21/2"F156114.5732274-2265178139.5105201.64-19152124440
11/2" x3"F156114.5732274-2280190152.5127221.64-19152124450
2" x21/2"H165127922678-1965178139.5105201.64-19162154480
2" x 3"H165127922678-1980190152.5127221.64-19162154480
21/2" x 4"H1901491002978-22100229190.5157241.68-19143165490
3" x 4"K21016812732108-22100229190.5157241.68-19162155540
4" x 6"N27321615738108-25150279241.5216261.68-22210200620
6" x 8"R356292216461012-29200343298.5270291.68-22241240790

Remark: 150Lb for outlet flange


A48SC900, A48SC900I, A48SC900V
Nominal Diameter (in)Dimensions(mm)   Inlet flange  900Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
11/2" x 2"F178123.87332104-2950152120.592181.64-19165124440
2" x 3"H216165.19238108-2580190152.5127221.64-19162154480
3" x 4"J241190.512738108-25100229190.5157241.68-19181184550
4" x 6"K292234.915744128-32150279241.5216261.68-22222197630

Remark: 150Lb for outlet flange


A48SC1500, A48SC1500I, A48SC1500V
Nominal Diameter (in)Dimensions(mm)  Inlet flange  1500Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
1" x 11/2"D149101.65128154-2540156114.573201.64-19125125420
11/2" x 21/2"E178123.87332144-2840156114.573201.64-19150194450
11/2" x 2"E178123.87332154-285016512792221.68-19150194450
11/2" x3"E178123.87341174-2980210268.5127311.68-22155254450

Remark: 300Lb for outlet flange


A48SC2500, A48SC2500V
Nominal Diameter (in)Dimensions(mm)  Inlet flange  2500Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
11/2" x 21/2"F205146.07345174-3265190149105271.68-22165140670

Remark: 300Lb for outlet flange


Materials for main parts

NOName of partMaterials A48SY-CMaterials A48SY-IMaterials A48SY-V
1BodyWCB1Cr5Mo15Cr1Mo1V
2Nozzle2Cr1330412Cr1MoVA
3Adjusting Ring2Cr13304304
4Disc2Cr1317-4PH17-4PH
5Guide sleeve2Cr13304304
6BonnetZG230-450ZG230-450ZG230-450
7Spring50CrVA50CrVA50CrVA
8Stem2Cr132Cr132Cr13
9Adjusting bolt452Cr132Cr13
10CapZG200-400ZG200-400ZG200-400
11RadiatorZG230-450ZG230-450ZG230-450
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


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Next: A44C
A48SC

Flanged ends for HP and Superheated Steam