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Type A41C Safety Valve

Safety Valves, angle type

Low lift safety valve

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)≥1/20 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

A41C150, A41C150P, A41C150R
Nominal Diameter (in)Dimensions(mm)  Inlet flange 150Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'btZ'-Φd'LL1H
1/2" x 1/2"D8960.5351254-15158960.535121.64-159090260
3/4" x 1"D9870431454-152510879.551151.64-159692280
1" x 1"D10879.5511554-152510879.551151.64-15100100290
1" x 2"E10819.5511554-1550152120.592181.64-19115105290
11/2" x1 1/2"G12798.5731854-154012798.573181.64-15121124330
11/2" x2"G12798.5731854-1550152120.592181.64-19121124330
2" x 3"J152120.5921854-1980190152.5127221.64-19124136350

Remark: 150Lb for outlet flange


A41C300, A41C300P, A41C300R
Nominal Diameter (in)Dimensions(mm)  Inlet flange 300Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'btZ'-Φd'LL1H
1/2" x 1/2"D9566.5351554-15158960.535121.64-159090260
3/4" x 1"D11782.5431654-192510879.551151.64-159692280
1" x 1"D12489511854-192510879.551151.64-15100100290
1" x 2"E12489511854-1950152120.592181.64-19115105290
11/2" x1 1/2"G156114.5732054-224012798.573181.64-15121124330
11/2" x2"G156114.5732054-2250152120.592181.64-19121124330
2" x 3"J165127922358-1980190152.5127221.64-19124136350

Remark: 150Lb for outlet flange


A41C600, A41C600P, A41C600R
Nominal Diameter (in)Dimensions(mm) Inlet flange  600Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'btZ'-Φd'LL1H
3/4" x 1"D11882.5431674-152510879.551151.64-15105110280
1" x 2"D12489512074-1950152120.592181.64-19115105290
11/2" x1 1/2"F156114.5732274-224012798.573181.64-15147162330
11/2" x2"F156114.5732274-2250152120.592181.64-19147162330

Remark: 150Lb for outlet flange


A41C900, A41C900P, A41C900R
Nominal Diameter (in)Dimensions(mm) Inlet flange  900Lb
d0DD1D2btZ-ΦdDN'D'D1'D2'btZ'-Φd'LL1H
1" x 11/2"d0150101.6512874-2540156114.573201.64-22125125320
11/2" x1 1/2"F178123.8733274-2940156114.573201.64-22150195350

Remark: 300Lb for outlet flange


Materials for main parts

NOName of partMaterials A41H-CMaterials A41Y-PMaterials A41Y-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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A41C

Closed bonnet with Cap, Low Lift