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Position: Chinese Standard in English/CJ/T 25-2018
CJ/T 25-2018   Hand flow adjusting valves for heating (English Version)
Standard No.: CJ/T 25-2018 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 7500 words Price(USD):284.0 remind me the price change

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Implemented on:2019-5-1 Delivery: via email in 1 business day
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Standard No.: CJ/T 25-2018
English Name: Hand flow adjusting valves for heating
Chinese Name: 供热用手动流量调节阀
Chinese Classification: P46    Heat supply and heating engineering
Professional Classification: CJ    Professional Standard - Urban Construction
ICS Classification: 91.140.10 91.140.10    Central heating systems 91.140.10
Issued by: MOHURD
Issued on: 2018-11-16
Implemented on: 2019-5-1
Status: valid
Superseding:CJ/T 25-1999 Hand flow adjusting valves for heating
Language: English
File Format: PDF
Word Count: 7500 words
Price(USD): 284.0
Delivery: via email in 1 business day
Hand flow adjusting valves for heating 1 Scope This standard specifies the classification and designation, working conditions and working pressure difference, valve body structure and size, materials, requirements, test methods, inspection rules, cleaning and treatment, marking, packaging, transportation and storage of hand flow adjusting valves for hot water system and air-conditioning water system. This standard is applicable to the hand flow adjusting valves for heating with design pressure less than or equal to 2.5 Mpa, design hot water medium temperature less than or equal to 200°C and nominal diameter of 15 mm to 600 mm (hereinafter referred to as "adjusting valves"). 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 1176 Casting copper and copper alloys GB/T 1220 Stainless steel bars GB/T 1348 Spheroidal graphite iron castings GB/T 1414 General purpose metric screw threads - The plan for pipe systems GB/T 5796.1 Trapezoidal screw threads - Part 1: Profiles GB/T 5796.2 Trapezoidal screw threads - Part 2: General plan GB/T 5796.3 Trapezoidal screw threads - Part 3: Basic dimensions GB/T 5796.4 Trapezoidal screw threads - Part 4:Tolerances GB/T 9113 Integral steel pipe flanges GB/T 9439 Grey iron castings GB/T 12229 General purpose industrial valve - Specification of spheroidal graphite iron castings GB/T 13927 Industrial valves - Pressure testing GB/T 17241.6 Integral cast iron flanges JC/T 1019 Asbestos sealing packing 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 maximum stroke displacement of the adjusting valve clack from the closed position to the fully open position 3.2 relative stroke ratio of actual stroke to maximum stroke of adjusting valve stem 3.3 flow capacity flow through the adjusting valves when the valve is in a fully open state, with a pressure difference of 100 kPa at both ends and a fluid density of 1,000 kg/cm3 3.4 valve authority percentage of the pressure loss of the valve in the total pressure loss of the adjusting pipeline (including the valve itself) when the adjusting valve is fully open 3.5 ratio flow ratio of the flow at a certain relative stroke of the adjusting valve to the flow when the adjusting valve is fully opened 3.6 regulating characteristics functional relationship between ratio flow and relative stroke of adjusting valve When the valve authority is 100%, the regulating characteristics of the adjusting valve are called theoretical regulating characteristics; when the valve authority is less than 100%, it is called the actual regulating characteristic.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification and designation 5 Working conditions and working pressure difference 6 Structure and dimension of valve body 7 Materials 8 Requirements 9 Test method 10 Inspection rules 11 Cleaning and treatment 12 Marking, packaging, transportation and storage Annex A (Normative) Test apparatus
Referred in CJ/T 25-2018:
*GB/T 1176-2013 Casting Copper and Copper Alloys
*GB/T 1220-2007 Stainless steel bars
*GB/T 1348-2019 Spheroidal graphite iron castings
*GB/T 1414-2013 General purpose metric screw threads—The plan for pipe systems
*GB/T 5796.1-2022 Trapezoidal screw threads—Part 1: Profiles
*GB/T 5796.2-2022 Trapezoidal screw threads—Part 2: General plan
*GB/T 5796.3-2022 Trapezoidal screw threads—Part 3: Basic dimensions
*GB/T 5796.4-2022 Trapezoidal screw threads—Part 4: Tolerances
*GB/T 9113-2010 Integral steel pipe flanges
*GB/T 9439-2023 Grey iron castings
*GB/T 12229-2005 General purpose industrial valve - Specification of spheroidal graphite iron castings
*GB/T 13927-2022 Industrial valves—Pressure testing
*GB/T 17241.6-2008/XG1-2011 Integral cast iron flanges, includes Amendment 1
*JC/T 1019-2006 Asbestos sealing packing
Code of China
Standard
CJ/T 25-2018  Hand flow adjusting valves for heating (English Version)
Standard No.CJ/T 25-2018
Statusvalid
LanguageEnglish
File FormatPDF
Word Count7500 words
Price(USD)284.0
Implemented on2019-5-1
Deliveryvia email in 1 business day
Detail of CJ/T 25-2018
Standard No.
CJ/T 25-2018
English Name
Hand flow adjusting valves for heating
Chinese Name
供热用手动流量调节阀
Chinese Classification
P46
Professional Classification
CJ
ICS Classification
Issued by
MOHURD
Issued on
2018-11-16
Implemented on
2019-5-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
CJ/T 25-1999 Hand flow adjusting valves for heating
Language
English
File Format
PDF
Word Count
7500 words
Price(USD)
284.0
Keywords
CJ/T 25-2018, CJ 25-2018, CJT 25-2018, CJ/T25-2018, CJ/T 25, CJ/T25, CJ25-2018, CJ 25, CJ25, CJT25-2018, CJT 25, CJT25
Introduction of CJ/T 25-2018
Hand flow adjusting valves for heating 1 Scope This standard specifies the classification and designation, working conditions and working pressure difference, valve body structure and size, materials, requirements, test methods, inspection rules, cleaning and treatment, marking, packaging, transportation and storage of hand flow adjusting valves for hot water system and air-conditioning water system. This standard is applicable to the hand flow adjusting valves for heating with design pressure less than or equal to 2.5 Mpa, design hot water medium temperature less than or equal to 200°C and nominal diameter of 15 mm to 600 mm (hereinafter referred to as "adjusting valves"). 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 1176 Casting copper and copper alloys GB/T 1220 Stainless steel bars GB/T 1348 Spheroidal graphite iron castings GB/T 1414 General purpose metric screw threads - The plan for pipe systems GB/T 5796.1 Trapezoidal screw threads - Part 1: Profiles GB/T 5796.2 Trapezoidal screw threads - Part 2: General plan GB/T 5796.3 Trapezoidal screw threads - Part 3: Basic dimensions GB/T 5796.4 Trapezoidal screw threads - Part 4:Tolerances GB/T 9113 Integral steel pipe flanges GB/T 9439 Grey iron castings GB/T 12229 General purpose industrial valve - Specification of spheroidal graphite iron castings GB/T 13927 Industrial valves - Pressure testing GB/T 17241.6 Integral cast iron flanges JC/T 1019 Asbestos sealing packing 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 maximum stroke displacement of the adjusting valve clack from the closed position to the fully open position 3.2 relative stroke ratio of actual stroke to maximum stroke of adjusting valve stem 3.3 flow capacity flow through the adjusting valves when the valve is in a fully open state, with a pressure difference of 100 kPa at both ends and a fluid density of 1,000 kg/cm3 3.4 valve authority percentage of the pressure loss of the valve in the total pressure loss of the adjusting pipeline (including the valve itself) when the adjusting valve is fully open 3.5 ratio flow ratio of the flow at a certain relative stroke of the adjusting valve to the flow when the adjusting valve is fully opened 3.6 regulating characteristics functional relationship between ratio flow and relative stroke of adjusting valve When the valve authority is 100%, the regulating characteristics of the adjusting valve are called theoretical regulating characteristics; when the valve authority is less than 100%, it is called the actual regulating characteristic.
Contents of CJ/T 25-2018
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification and designation 5 Working conditions and working pressure difference 6 Structure and dimension of valve body 7 Materials 8 Requirements 9 Test method 10 Inspection rules 11 Cleaning and treatment 12 Marking, packaging, transportation and storage Annex A (Normative) Test apparatus
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Keywords:
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