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BS ISO 10522:2021

BS ISO 10522:2021

$102.76

Agricultural irrigation equipment. Direct-acting pressure-regulating valves

Published By Publication Date Number of Pages
BSI 2021 22
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This document specifies construction and performance requirements and test methods for direct-acting pressure-regulating valves (hereinafter “pressure regulators”) intended for operation in irrigation systems, with water at temperatures not exceeding 60 °C, which can contain fertilizers and chemicals of types and in concentrations commonly used in agricultural irrigation.

This document applies to pressure regulators in nominal sizes up to and including 100 mm (4 in).

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
9 4 Pressure regulator classification
4.1 According to construction of regulation assembly
4.2 According to construction of pressure regulator
10 4.3 According to regulated pressure at zero flow
4.4 According to accuracy level [see 7.5.2.4 b)]
5 Marking
6 Technical characteristics
6.1 General
11 6.2 Pressure regulator body
6.3 Adjustment assembly
6.4 Connections
6.5 Adjustable stop
7 Mechanical and functional tests
7.1 Overview
12 7.2 General
7.3 Regulation uniformity (in non-adjustable pressure regulators)
13 7.4 Tightness of pressure regulator with adjustable stop
7.5 Regulation curve
7.5.1 Installation
14 7.5.2 Test results and requirements
15 7.5.3 Single-range pressure regulators (class 4.1.1)
7.5.4 Multi-range pressure regulators (class 4.1.2)
7.5.5 Single-range adjustable pressure regulators (class 4.1.3)
7.5.6 Multi-range adjustable pressure regulators (class 4.1.4)
7.6 Regulated pressure as function of pressure regulator adjustment in pressure regulators of classes 4.1.3 and 4.1.4
7.7 Regulated pressure at zero flow (in pressure regulators of class 4.3.2)
16 7.8 Regulated pressure as function of inlet pressure at constant flow rate
7.8.1 General
7.8.2 Plotting pressure curves
7.9 Regulation curve of integral pressure regulators (class 4.2.2)
17 7.10 Pressure loss
7.11 Resistance of pressure regulator body to internal hydrostatic pressure
7.11.1 General
7.11.2 Metal-body pressure regulators
7.11.3 Plastics-body pressure regulators
18 8 Durability
8.1 On/off cycles
8.2 Changing condition cycles
8.2.1 General
8.2.2 For ordinary pressure regulators
8.2.3 For integral pressure regulators
8.2.4 Requirement for ordinary and integral pressure regulators
19 9 Information to be supplied by the manufacturer
9.1 General information
9.2 Operational data
20 Annex A (informative) Figures

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BS ISO 10522:2021
$102.76