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GB/T 18691.4-2021: Agricultural irrigation equipment - Irrigation valves - Part 4: Air valves
Status: Valid GB/T 18691.4: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 18691.4-2021 | English | 304 |
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Agricultural irrigation equipment - Irrigation valves - Part 4: Air valves
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GB/T 18691.4-2021
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| GB/T 18691.4-2011 | English | 559 |
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Agricultural irrigation equipment -- Irrigation valves -- Part 5: Air valves
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GB/T 18691.4-2011
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PDF similar to GB/T 18691.4-2021
Basic data | Standard ID | GB/T 18691.4-2021 (GB/T18691.4-2021) | | Description (Translated English) | Agricultural irrigation equipment - Irrigation valves - Part 4: Air valves | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B91 | | Word Count Estimation | 16,183 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 18691.4-2021: Agricultural irrigation equipment - Irrigation valves - Part 4: Air valves---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Agricultural irrigation equipment -- Irrigation valves -- Part 4: Air valves
ICS 65:060:35
CCSB91
National Standards of People's Republic of China
Replacing GB/T 18691:4-2011
Agricultural irrigation equipment irrigation valve
Part 4: Intake and exhaust valves
Part 4:Airvalves
(ISO 9635-4:2014, IDT)
Published on 2021-12-31
2022-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents"
drafted:
This document is part 4 of GB/T 18691 "Irrigation Valves for Agricultural Irrigation Equipment": GB/T 18691 has released the following parts:
--- Part 1: General requirements;
--- Part 2: Isolation valve;
--- Part 3: Check valve;
--- Part 4: Intake and exhaust valves;
--- Part 5: Control valve:
This document replaces GB/T 18691:4-2011 "Irrigation Valves for Agricultural Irrigation Equipment Part 4: Inlet and Exhaust Valves", which is the same as GB/T 18691:4-
Compared with:2011, except for structural adjustment and editorial changes, the main technical changes are as follows:
--- Changed the design requirements (see Chapter 4, Chapter 4 of the:2011 edition);
--- Changed the exhaust function requirements (see 5:4:1, 5:3:1 of the:2011 edition);
--- Changed the air intake function requirements (see 5:4:2, 5:3:2 of the:2011 edition);
--- Changed the ventilation function requirements (see 5:4:3, 5:3:3 of the:2011 edition);
--- Changed the reliability test requirements (see 5:6:3, 5:5:3 of the:2011 edition):
This document uses the translation method equivalent to ISO 9635-4:2014 "Irrigation valves for agricultural irrigation equipment - Part 4: Intake and exhaust valves":
The following editorial changes have been made to this document:
--- Replace "bar" with "MPa" conversion;
--- Corrected the typographical error in the original international standard, "5:3:3, 5:4:1, 5:4:2" in the first column of Table 1 is replaced by "-":
Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by China Machinery Industry Federation:
This document is under the jurisdiction of the National Agricultural Machinery Standardization Technical Committee (SAC/TC201):
This document is drafted by: Youli Electromechanical Co:, Ltd:, China Academy of Agricultural Mechanization Sciences, Aierda Electric Co:, Ltd:, Taizhou East
Xie Motor Co:, Ltd:, Wenling Tiantai Electric Co:, Ltd:, Hangzhou Slater Pump Co:, Ltd:, Jiangsu University Fluid Machinery Engineering Technology Research Institute
Research Center, National Pump and System Engineering Technology Research Center, Anhui Provincial Institute of Product Quality Supervision and Inspection, Taishan Intelligent Manufacturing Industry Research
Institute, Weishijia (Shandong) Intelligent Technology Co:, Ltd:
The main drafters of this document: Chen Xianjun, Zhang Xiansheng, Chen Yunfu, Zhang Fangyuan, Gao Yuan, Zhang Jiangping, Yuan Shouqi, Zhao Liwei, Yin Gang, Wang Yang,
Lu Shusheng, Li Mingyu, Wei Fukui, Zhang Dongxu, Wei Yuanchao:
The previous versions of this document and its superseded documents are as follows:
---First published as GB/T 18693-2002 in:2002, and first revised as GB/T 18691:4-2011 in:2011;
---This is the second revision:
Introduction
GB/T 18691 "Irrigation Valves for Agricultural Irrigation Equipment" is planned to be composed of the following five parts according to product characteristics:
--- Part 1: General requirements: The purpose is to give general requirements for the design, performance and consistency evaluation of irrigation valves:
--- Part 2: Isolation valve: The purpose is to give the design, performance, consistency evaluation and other requirements of the isolation valve, and to give the unique characteristics of the isolation valve:
technical requirements:
--- Part 3: Check valve: The purpose is to give the design, performance, consistency evaluation and other requirements of the check valve, and to give the unique characteristics of the check valve:
technical requirements:
--- Part 4: Intake and exhaust valves: The purpose is to give the design, performance, consistency evaluation and other requirements of the intake and exhaust valves, and to give the intake and exhaust valves:
Valve-specific technical requirements:
--- Part 5: Control valve: The purpose is to give the design, performance, consistency evaluation and other requirements of the control valve, and to give the unique characteristics of the control valve:
technical requirements:
Among them, GB/T 18691:1 specifies the general requirements for irrigation valves: Except for the common requirements of general requirements, the rest of the standards are based on the general requirements of irrigation valves:
The category specifies the specific technical requirements for this type of irrigation valve:
Based on GB/T 18691:1, GB/T 18691 completely gives four types of agricultural products including isolation valve, check valve, intake and exhaust valve, and control valve:
The technical requirements and evaluation methods of industrial irrigation valves provide a standard basis for the manufacture and product upgrading of agricultural irrigation valves:
Agricultural irrigation equipment irrigation valve
Part 4: Intake and exhaust valves
1 Scope
This document specifies the design requirements, performance requirements, conformity assessment, marking and packaging of intake and exhaust valves: This intake and exhaust valve is suitable for water temperature
Irrigation systems that do not exceed 60°C and whose water may contain certain types and concentrations of fertilizers or chemicals commonly used in agriculture:
This document applies to hydraulically driven irrigation intake and exhaust valves with a nominal size of not less than DN15:
The operation can be realized by applying force to the closing parts or by applying force to the opening and closing parts through a float through a mechanical lever: This type of valve is also available with an adjustable pilot valve
Apply force to operate:
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document:
GB/T 18691:1-2021 Irrigation Valves for Agricultural Irrigation Equipment Part 1: General Requirements (ISO 9635-1:2014, IDT)
GB/T 18691:2-2021 Irrigation Valves for Agricultural Irrigation Equipment Part 2: Isolation Valves (ISO 9635-2:2014, IDT)
3 Terms and Definitions
The terms and definitions defined in GB/T 18691:1-2021 and the following terms and definitions apply to this document:
3:1
Intake and exhaust valve airvalve
float-type purger
Automatic float valve for in-duct intake and exhaust control:
NOTE: These valves may be single float or double float with one or more of the following functions: exhaust, intake:
3:2
exhaust functionairreleasefunction
The function of removing air from water pipes or equipment:
3:3
Air intake function
vacuum release function
A function that allows gas to enter water pipelines or equipment:
3:4
ventilation function
Continuous ventilation function continuousactingairventfunction
The function of discharging the trapped air in the pipeline under a certain pressure:
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