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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

Applications:

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

"Approved for  gases, vapours and fluids."

Working temperatures:

 -60°C up to +200°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 PressurePN150300600900150
Body strengthPs(Mpa)3.07.51522.538
Set pressurePk(Mpa)0.1-21.6-53.2-108-2510-25
Seal pressurePm(Mpa)90%Pk
Reseation pressurePh(Mpa)≥90%Pk
Relieving PressurePp(Mpa)≤1.1Pk
Lift heightH(mm)≥1/4 d0
Appropriate               temp.C (WCB)                                                      P, R (SS304, SS316)≤300℃                                                          ≤200℃
Appropriate       MediumAir, Oil, Steam, Water, Corrosive medium


Code of throat diameter

CodeDiameterCodeDiameter
D10L20
E13M55
F16N60
G20.5P72
H26Q96
J33R115
K40T148


Main Dimensions

A42C150, A42C150P, A42C150R
Nominal Diameter (in)Dimensions(mm)  Inlet flange 150Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
1/2" x 3/4"D8960.5351254-1520987043141.64-159090260
3/4" x 1"D9870431454-152510879.551151.64-159292280
1" x 11/2"D10879.5511554-154012798.573181.64-15105105290
1" x 2"D10879.5511554-1550152120.592181.64-19105105290
11/2" x 2"G12798.5731854-1550152120.592181.64-19124124320
11/2" x 21/2"G12798.5731854-1565178139.5105201.64-19124124340
11/2" x3"G12798.5731854-1580190152.5127221.64-19130130340
2" x21/2"J152120.5921854-1965178139.5105201.64-19130130360
2" x 3"J152120.5921854-1980190152.5127221.64-19130130360
21/2" x 4"J178139.51052054-19100229190.5157241.68-19137137360
3" x 4"L190152.51272254-19100229190.5157241.68-19156156450
4" x 6"N229190.515724108-19150279241.5216261.68-22197197510
6" x 8"P279241.521626108-22200343298.5270291.68-22240240740
8" x10"R343298.527029108-22250406362324311.612-25276276810
12" x14"T483432381321012-25350533476413351.612-29360360860

Remark: 150Lb for outlet flange


A42C300, A42C300P, A42C300R
Nominal Diameter (in)Dimensions(mm)  Inlet flange  300Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
1/2" x 3/4"D9566.5351554-1520987043141.64-159090260
3/4" x 1"D11782.5431654-192510879.551151.64-159692280
1" x 11/2"D12489511854-194012798.573181.64-15115105290
1" x 2"D12489511854-1950152120.592181.64-19115105290
11/2" x 2"G156114.5732054-2250152120.592181.64-19121124320
11/2" x 21/2"G156114.5732054-2265178139.5105201.64-19121124340
11/2" x3"G156114.5732054-2280190152.5127221.64-19124130340
2" x21/2"H165127922258-1965178139.5105201.64-19124130360
2" x 3"J165127922258-1980190152.5127221.64-19124130360
21/2" x 4"J1901491052458-22100229190.5157241.68-19143137360
3" x 4"L210168.51272858-22100229190.5157241.68-19162156450
4" x 6"N25420015732108-22150279241.5216261.68-22210197510
6" x 8"P318270216381012-22200343298.5270291.68-22241240740
8" x10"R381330270421012-25250406362324311.612-25279276810

Remark: 150Lb for outlet flange


A41C600, A41C600P, A41C600R
Nominal Diameter (in)Dimensions(mm)  Inlet flange 600Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
3/4" x 1"D11882.5431674-192510879.551151.64-159692290
1" x 2"D12489511974-1950152120.592181.64-19115105290
11/2" x 2"D156114.5732274-2250152120.592181.64-19152124340
11/2" x 21/2"D156114.5732274-2265178139.5105201.64-19152124350
11/2" x3"F156114.5732274-2280190152.5127221.64-19152124350
2" x21/2"F165127922678-1965178139.5105201.64-19162154380
2" x 3"F165127922678-1980190152.5127221.64-19162154380
21/2" x 4"H1901491002978-22100229190.5157241.68-19143165380
3" x 4"L21016812732108-22100229190.5157241.68-19162155460
4" x 6"N27321615738108-25150279241.5216261.68-22210200520
6" x 8"P356292216461012-29200343298.5270291.68-22241240750

Remark: 150Lb for outlet flange


A41C900, A41C900P, A41C900R
Nominal Diameter (in)Dimensions(mm)  Inlet flange 900Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
11/2" x2"F178123.87332104-2950152120.592181.64-19115124360
2" x 3"H216165.19238108-2580190152.5127221.64-19162154390
3" x4"J241190.512738108-25100229190.5157241.68-19181184480
4" x6"K292234.915744128-32150279241.5216261.68-22222197540

Remark: 150Lb for outlet flange


A41C1500, A41C1500P, A41C1500R
Nominal Diameter (in)Dimensions(mm)  Inlet flange 1500Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
3/4" x 1"D13088.94320104-22251248951181.64-19120136310
11/2" x 2"D178123.87326124-285016512792221.68-19140105360
11/2" x 21/2"F178123.87326124-2865190149105241.68-22152124360
2" x 3"F216165.19232158-2580210168.5127281.68-22162154380
3" x 4"J267203.212742148-32100254200157321.68-22181184490

Remark: 300Lb for outlet flange


Materials for main parts

NOName of partMaterials A42H-CMaterials A42Y-PMaterials A42Y-R
1BodyWCB304316
2Nozzle2Cr13/ 304304316
3Adjusting Ring2Cr13/ 304304316
4Disc2Cr13/ 304304316
5Guide sleeve2Cr13/ 304304316
6BonnetZG230-450ZG230-450ZG230-450
7Spring50CrVA50CrVA coated teflon50CrVA coated teflon
8Stem2Cr13304316
9Adjusting bolt452Cr132Cr13
10CapZG200-400ZG200-400ZG200-400
11Bellows304316316
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



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A42C

Closed bonnet with Cap