CJ/T 179-2018 in English

CJ/T 179-2018 Self-operated flow control valve

1 Scope

This standard specifies the classification and designation, general requirements, requirements, test methods, inspection rules, as well as marking, packaging, transportation and storage of self-operated flow control valves (hereinafter referred to as control valves).

This standard is applicable to self-operated flow control valves used in heating (cooling) systems with water as medium, with medium inlet pressure less than 2.5 MPa and temperature ranging from 4°C to 150°C.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 1220 Stainless steel bars
GB/T 1239.2 Cold coiled helical springs technical specifications - Part 2: Compressions spring
GB/T 12225 General purpose industrial valves - Specification of copper alloy castings
GB/T 12226 General purpose industrial valves - Specification of flake graphite iron castings
GB/T 12227 General purpose industrial valve - Specification of spheroidal graphite iron castings
GB/T 12229 General purpose industrial valves - Specification of carbon steel castings
GB/T 12716 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads
GB/T 13808 Wrought copper and copper alloys - Extruded rods and bars
GB/T 13927 Industrial valves - Pressure testing
GB/T 17241.6 Integral cast iron flanges
GB/T 23934 Hot formed helical compression springs - Technical requirement

 
3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1
self-operated flow control valve

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
5 General requirements
6 Requirements
7 Test methods
8 Inspection rules
9 Cleaning and treatment
10 Marking, packaging, transportation and storage