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Type A44C - 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

Closed bonnet

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       MediumC (WCB)                                                      P, R (SS304, SS316)Gsa, Liquid                                           Corrosive medium


Code of throat diameter

CodeDiameterCodeDiameter
D10L20
E13M55
F16N60
G20.5P72
H26Q96
J33R115
K40T148


Main Dimensions

A44C150
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"D9870431454-152510879.551151.64-159692260
1" x 11/2"D10879.5511554-154012798.573181.64-15115105280
1" x 2"D10879.5511554-1550152120.592181.64-19115105280
11/2" x 2"G12798.5731854-1550152120.592181.64-19121124310
11/2" x 21/2"G12798.5731854-1565178139.5105201.64-19121124310
11/2" x3"G12798.5731854-1580190152.5127221.64-19124130310
2" x21/2"H152120.5921854-1965178139.5105201.64-19124130350
2" x 3"J152120.5921854-1980190152.5127221.64-19124130350
21/2" x 4"J178139.51052054-19100229190.5157241.68-19143137430
3" x 4"L190152.51272254-19100229190.5157241.68-19162156490
4" x 6"N229190.515724108-19150279241.5216261.68-22210197610
6" x 8"P279241.521626108-22200343298.5270291.68-22241240840
8" x10"R343298.527029108-22250406362324311.612-25279276990
12" x14"T483432381321012-25350533476413351.612-293703601040

Remark: 150Lb for outlet flange


A44C300,  A44C300R
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"D11782.5431654-192510879.551151.64-159692260
1" x 11/2"D12489511854-194012798.573181.64-15115105280
1" x 2"D12489511854-1950152120.592181.64-19115105295
11/2" x 2"F156114.5732054-2250152120.592181.64-19121124310
11/2" x 21/2"F156114.5732054-2265178139.5105201.64-19121124310
11/2" x3"F156114.5732054-2280190152.5127221.64-19124130310
2" x21/2"H165127922258-1965178139.5105201.64-19124130350
2" x 3"H165127922258-1980190152.5127221.64-19124130350
21/2" x 4"J1901491052458-22100229190.5157241.68-19143137430
3" x 4"L210168.51272858-22100229190.5157241.68-19162156490
4" x 6"N25420015732108-22150279241.5216261.68-22210197610
6" x 8"P318270216381012-22200343298.5270291.68-22241240840
8" x10"R381330270421012-25250406362324311.612-25279276990
10" x12"T445387.5324461016-28350533476413351.612-283503301040

Remark: 150Lb for outlet flange


A44C600
Nominal Diameter (in)Dimensions(mm)  Inlet flange  600Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'b'tZ'-Φd'LL1H
3/4" x 1"D11882.5431674-192510879.551151.64-159692280
1" x 2"D12489511974-1950152120.592181.64-19115105300
11/2" x 2"F156114.5732274-2250152120.592181.64-19152124300
11/2" x 21/2"F156114.5732274-2265178139.5105201.64-19152124330
11/2" x3"F156114.5732274-2280190152.5127221.64-19152124330
2" x21/2"H165127922678-1965178139.5105201.64-19162154330
2" x 3"H165127922678-1980190152.5127221.64-19162154360
21/2" x 4"K1901491002978-22100229190.5157241.68-19143165360
3" x 4"K21016812732108-22100229190.5157241.68-19162155440
4" x 6"N27321615738108-25150279241.5216261.68-22210200610
6" x 8"P356292216461012-29200343298.5270291.68-22241240625

Remark: 150Lb for outlet flange


Materials for main parts

NOName of partMaterials A44Y-CMaterials A44Y-PMaterials A44Y-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
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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A44C

Closed bonnet with Packed Lever