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JB/T 6899-1993Fire test of valves (English PDF)

阀门的耐火试验

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

July 13, 1993

Implementation date

July 1, 1994

Scope

JB/T 6899-1993 is the English-translated version of 阀门的耐火试验.

JB/T 6899-1993 is the Chinese standard "Fire test of valves". Its scope clause reads: This standard specifies the general requirements, test system, test methods and performance requirements of fire resistance test of valves.

This standard is applicable to all kinds of nominal dimension valves with fire resistance requirements and nominal pressure (PN) not greater than 42.0 MPa. Its clauses include subject content and applicable scope; terms; general requirements.

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Document preview — JB/T 6899-1993

National Standard of the People's Republic of China

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

1 Subject content and applicable scope
2 Normative references
3 Terms
4 General requirements
5 Test system
6 Test methods and procedures
7 Performance requirements
8 Evaluation of other valves
9 Marking
10 Test report
3.

1 Subject content and applicable scope

This standard specifies the general requirements, test system, test methods and performance requirements of fire resistance test of valves.

This standard is applicable to all kinds of nominal dimension valves with fire resistance requirements and nominal pressure (PN) not greater than 42.0 MPa.

2 Normative references

GB 7306 Pipe threads where pressure-tight joints are made on the threads

3 Terms

3.1 symmetrical valve

valve along the axis of both ends of the valve body, with the same internal structure dimension on both sides of the midline of the opening and closing parts

3.2 asymmetric valve

valve along the axis of both ends of the valve body, with different internal structural dimensions on both sides of the midline of the opening and closing parts

4 General requirements

4.1 Symmetrical valves that may be installed in both directions shall only be tested in one installation direction. Asymmetric valves that may be installed in both directions shall be tested once in each of the two installation directions, and the second test may be carried out after renovation with the same valve, or the other installation direction test may be carried out with another same valve. Uniaxial valves that may be installed in both directions shall only be tested in one installation direction.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Cited by

GB/T 600-2023General specifications for marine piping valves and fittings

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