JB/T 13518-2018Three-way valves for high-pressure heaters (English PDF)

1 Foreword

JB/T 13518-2018 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 4 July 2018 and has been in force since 1 May 2019.

2 Scope

This standard is a recommended Chinese machinery industry standard for three-way valves fitted to high-pressure heaters in power stations. It sets the terms and definitions, the structural types, the technical requirements, the inspection and test methods and the inspection rules, then marking, painting, packaging, storage and transportation and the quality certification documents. It applies to valves of nominal size from DN150 to DN600, or NPS6 to NPS24, with nominal pressure from PN100 to PN760 or pressure class from Class600 to Class4500, and a working temperature no higher than 350 °C. Its classifications are J16 and 23.060.99, and it quotes GB/T 150.2, GB/T 150.3 and many parts of GB/T 223.

3 Normative references

JB/T 13518-2018 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 150.2

GB/T 150.3

GB/T 223.11-2008 — Iron, steel and alloy -- Determination of chromium content -- Visual titration or potentiometric titration method

GB/T 223.12-1991 — Methods for chemical analysis of iron, steel and alloy. The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content

GB/T 223.13-2000

GB/T 223.14-2000 — Methods for chemical analysis of iron, steel and alloy. The N-benzoyl-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content

GB/T 223.17-1989 — Methods for chemical analysis of iron, steel and alloy - The diantipyrylmethane photometric method for the determination of titanium content

GB/T 223.18-1994 — Methods for chemical analysis of iron, steel and alloy--The sodium thiosulfate separation iodimetric method for the determination of copper content

GB/T 223.19-1989 — Methods for chemical analysis of iron, steel and alloy. The neocuproine-chloroform extraction photometric method for the determination of copper content

GB/T 223.20-1994 — Methods for chemical analysis of iron，steel and alloy--The fotentiometric titration method for the determination of cobalt content

GB/T 223.21-1994 — Methods for chemical analysis of iron, steel and alloy--The 5-Cl-PADAB spectrophotometricmethod for the determination of cobalt content

GB/T 223.22-1994 — Methods for chemical analysis of iron, steel and alloy--The nitroso-R-salt spectrophotometric method for the determination of cobalt content

GB/T 223.23-2008 — Iron, steel and alloy - Determination of nickel content - The dimethylglyoxime spectrophotometric method

GB/T 223.25-1994 — Methods for chemical analysis of iron, steel and alloy--The dimethylglyoxime gravimetric method forthe determination of nickel content

4 About this standard

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

English translation: about 15 pages

5 Classification and status

International classification (ICS): 23.060.99

Prefix JB/T: recommended standard.