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JB/T 12620-2016Technical requirements for hydraulically operated inlet ball valves of hydraulic turbines (English PDF)

水轮机进水液动球阀技术条件

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

January 15, 2016

Implementation date

June 1, 2016

Scope

JB/T 12620-2016 is the English-translated version of 水轮机进水液动球阀技术条件.

JB/T 12620-2016 is a recommended Chinese machinery industry standard giving the specification for the hydraulically operated ball valves installed at the inlet of a hydraulic turbine, which it calls inlet ball valves.

It covers the composition of the valve, the typical structural forms and the types, the technical requirements, the inspection and test methods, the rules for inspection and acceptance, and the marking, shipment and storage.

It applies to water ball valves with a nominal diameter of no more than 5 000 mm. Among the standards it quotes are GB 150.1, GB 150.3, GB 150.4-2011, GB/T 1220, GB/T 3766, GB 5226.1, GB/T 7233.1-2009, GB/T 8564 and GB/T 12465.

The document carries the Chinese classification J16 and the international classification 23.060.10.

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Document preview — JB/T 12620-2016

National Standard of the People's Republic of China

ICS: 23.060.10

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

1 Scope
2 Normative references
3 Terms and definitions
4 Composition, typical structural types and model
4.1 Composition
4.2 Typical structural types
4.3 Model
5 Technical requirements
5.1 General
5.2 Mechanical parts and components
5.3 Hydraulic system and operating mechanism
5.4 Control system
5.5 Materials
5.6 Welding and repair welding
5.7 Non-destructive testing
5.8 Appearance of the coating
5.9 Marking and nameplate
5.10 Performance
5.11 Test on site
6 Inspection and test methods
6.1 Inspection of the chemical composition and of the mechanical properties of the materials
6.2 Non-destructive testing
6.3 Inspection of the appearance of the coating
6.4 Inspection of the marking and of the nameplate
6.5 Dimensional inspection
6.6 Factory test
6.7 Test on site
7 Inspection and acceptance rules
7.1 Factory inspection
7.2 Type inspection
7.3 Acceptance
8 Marking, shipping and storage
8.1 Marking
8.2 Shipping and storage
Figure 1 Composition diagram of the inlet ball valve
Figure 2 Typical structural diagram of the accumulator type hydraulically operated ball valve (straight split type)

What this standard covers

This standard specifies the composition, typical structure type and type, technical requirements, inspection and test methods, inspection and acceptance rules, marking, shipment and storage of hydraulic turbine ball valves (hereinafter referred to as "inlet ball valves"). This standard applies to water ball valves with a nominal diameter of not more than 5 000 mm.

Document data

International classification (ICS): 23.060.10.

Chinese classification (CCS): J16.

Estimated length of the Chinese original: 16,172 words.

Standards quoted by this document

GB 150.1; GB 150.3; GB 150.4-2011; GB/T 191; GB/T 700; GB 713; GB/T 1220; GB/T 1591; GB/T 3766; GB/T 4237; GB/T 4892; GB 5226.1; GB 6388; GB/T 6967; GB/T 7233.1-2009; GB/T 7233.2-2010; GB/T 7935; GB/T 8564; GB/T 9969; GB/T 12229; GB/T 12465; GB/T 12777

3 Terms and definitions

4 Composition, typical structural types and model

5 Technical requirements

6 Inspection and test methods

7 Inspection and acceptance rules

8 Marking, shipping and storage

......
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

Normative references

GB 150.1 · GB 150.3 · GB 150.4-2011 · GB 713 · GB 5226.1 · GB 6388

Similar standards

JB/T 10373-2014|GB/T 14478-2025|GB/T 28572-2025|NB/T 10078-2018|NB/T 42056-2015|JB/T 10365-2014

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