Conventional Pressure Relief Valve (PRV), WCB, WCC, WC6, CF3, CF3M, CF8, CF8M
Detail Information
Conventional Pressure Relief Valve (PRV) Structure and Parameter:
Valve Design: ASME, API 526, GB/T 12243-2005
Material: A216-WCB, A216-WCC, A217-WC6, CF3, CF3M, CF8, CF8M.
Pressure Grade: 150Lb, 300Lb, 600Lb, 900Lb, PN16~PN320
Seal Test Pressure: 0.9PS
Discharge Pressure: ≤1.1PS
Back Seat Pressure: ≥0.85PS
Lift Height: ≥(1/4)do
Coefficient of Discharge: G-0.75
Connection Flange: ASME B16.5, GB/T 9113.1/2-2000.
safety valve Parts Materials
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)
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>
Valve Design: ASME, API 526, GB/T 12243-2005
Material: A216-WCB, A216-WCC, A217-WC6, CF3, CF3M, CF8, CF8M.
Pressure Grade: 150Lb, 300Lb, 600Lb, 900Lb, PN16~PN320
Seal Test Pressure: 0.9PS
Discharge Pressure: ≤1.1PS
Back Seat Pressure: ≥0.85PS
Lift Height: ≥(1/4)do
Coefficient of Discharge: G-0.75
Connection Flange: ASME B16.5, GB/T 9113.1/2-2000.
safety valve Parts Materials
| NO. | Name of part | HFA42Y-C Material | HFA42Y-P Material | HFA42Y-R Material |
| Nozzle | 2Cr13/SS304 | A351-CF8 | A351-CF8M | |
| 2 | Body | A216-WCB | A351-CF8 | A351-CF8M |
| 3 | Adjusting ring | 2Cr13/SS304 | SS304 | SS316 |
| 4 | Disc holder | 2Cr13/SS304 | SS304 | SS316 |
| 5 | Disc | 2Cr13/SS304 | SS304 | SS316 |
| 6 | Guide sleeve | 2Cr13/SS304 | SS304 | SS316 |
| 7 | Bonnet | WCB | SS304-450 | SS316 |
| 8 | Spring | 50CrVA | 50CrVACoated Teflon | 50CrVA/ Inconel |
| 9 | Stem | 2Cr13/SS304 | SS304 | SS316 |
| 10 | Adjusting bolt | 45 | SS304 | SS316 |
| 11 | 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)
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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