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A41H Spring Loaded Safety Valve, Material A216 WCB, A216 WCC, A217 WCC
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A41H Spring Loaded Safety Valve, Material A216 WCB, A216 WCC, A217 WCC


 Safety valve is a valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharges a quantity of the fluid so as to prevent a predetermined safe pressure being exceeded.

A41H/Y-160 is high pressure type safety valve with the pressure grade is PN160, it is widely used in pressure container, water tank, pipeline with the medium of gas, petroleum or water, which is installed to protect the equipment from over-pressure danger.

A41H/Y--160 usually applies with A216-WCB as material, stainless steel is also available. Connect with high pressure grade flange and high pressure lens gasket, low lift, closed bonnet type.

STRUCTURE AND PARAMETER


A41H Spring Loaded Safety Valve

Valve Design: ASME, API 526, GB/T 12243-2005

Material: A216-WCB, A216-WCC, A217-WC6, CF3, CF3M, CF8, CF8M, Brass
Pressure Grade: 150Lb, 300Lb, 600Lb, 900Lb, PN16~PN320
Seal Test Pressure: 0.9PS
Discharge Pressure: ≤1.1PS
Back Seat Pressure: ≥0.85PS
Lift Height: ≥(1/20)do LOW LIFT
Coefficient of Discharge: G-0.15
Connection Flange: JB/T 2769-1992

NO.

Name of part

HFA41H/Y-160Material

HFA41H/Y-160P Material

HFA41H/Y-160R Material

1

Flange

35/35CrMoA

2Cr13/SS304

SS316

2

Nozzle

2Cr13/SS304

SS304

SS316

3

Body

35/40

SS304

SS316

4

Disc

2Cr13/SS304

SS304

SS316

5

Guide sleeve

2Cr13/SS304

SS304

SS316

6

Spring

50CrVA

50CrVA Coated Teflon

50CrVA/ Inconel

7

Stem

2Cr13/SS304

SS304

SS316

8

Bonnet

ZG230-450

SS304

SS316

9

Adjusting bolt

45

2Cr13/ SS304

2Cr13/ SS316

10

Cap

ZG200-400

SS304

SS316

CODES AND STANDARDS

 United States

ASME (American Society of Mechanical Engineers) Boiler & Pressure Vessel Code, Section I
ASME (American Society of Mechanical Engineers) Boiler & Pressure Vessel Code, Section VIII, Division 1
API (American Petroleum Institute) Recommended Practice 520 and API Standard 526, API Standard 2000 (low pressure - Storage tank

European Union

 European standard steam boiler safety valveISO 4126 (harmonized with European Union directives) [5]
EN 764-7 (former CEN standard, harmonized with European Union directives, replaced with EN ISO 4126-1)
AD Merkblatt (German)
PED 97/23/EC (Pressure Equipment Directive - European Union)

China

JB/T308-2004 <Valves Code>
GB/T12241-2005 <Safety Valves’ Design, Manufacture and Test>
GB/T12243-2005 <Safety Valves’ Design, Manufacture and Test>

 


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