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ASME A112.18.3 2002 R2022

ASME A112.18.3 2002 R2022

$98.04

ASME A112.18.3-2002 (R2022) Performance Requirements for Backflow Protection Devices and Systems in Plumbing Fixture Fittings

Published By Publication Date Number of Pages
ASME 2002 32
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This Standard addresses functional performance and requires physical characteristics of devices and systems which provide backflow protection consistent with the level of risk associated with the plumbing fixture fitting application. The Standard establishes specific performance criteria and provides the test methods to prove compliance. It is applicable to all plumbing fixture fittings with outlets not protected by an air gap.

PDF Catalog

PDF Pages PDF Title
7 CONTENTS
FIGURES
TABLES
NONMANDATORY APPENDIX
8 FOREWORD
9 COMMITTEE ROSTER
11 CORRESPONDENCE WITH THE A112 COMMITTEE
13 1 PURPOSE
2 SCOPE
3 REFERENCE STANDARDS
4 DEFINITIONS
14 5 APPLICATION OF BACKFLOW PREVENTION DEVICES
5.1 Minimum Level of Protection
5.2 Application
15 6 GENERAL REQUIREMENTS FOR BACKFLOW PREVENTION DEVICES
6.1 Functional
6.2 Materials
6.3 Environment
6.3.1 Working Pressure.
6.3.2 Working Temperature.
6.4 Reliability
7 EVALUATION OF BACKFLOW PREVENTION DEVICES
7.1 Sample Size
7.2 Test Methodology
7.2.1 Facilities
7.2.2 Protocol
7.3 Conformance
8 FIXTURE FITTINGS WITH INTERNAL DEVICES COMPLYING WITH PARAS. 6 AND 7
8.1 Health and Safety
8.1.1
8.1.2
8.1.3
8.2 Performance Tests
8.2.1 Selection of Test Specimens
1 Acceptance Sampling Plan — Devices
16 8.2.2 Conformance
9 FIXTURE FITTINGS WITH INTERNAL DEVICES NOT COMPLYING WITH PARA. 7
9.1 Requirements
9.2 Sample Size
1 Test Protocol for Devices
17 9.3 Test Methodology
9.3.1 General
9.3.2 Conformance
9.3.3 Instrumentation
10 TEST METHODS AND PERFORMANCE CRITERIA
11 FUNCTIONAL TEST OF BACKFLOW PREVENTION DEVICES
11.1 Check Valves (New and After Durability Tests)
11.2 Vacuum Breakers, Automatic Diverters, and Vents
2 Acceptance Sampling Plan — Fittings
18 12 FUNCTIONAL TEST OF BACKFLOW PREVENTION SYSTEMS
12.1 Back Pressure
2 Test Protocol for Fittings Without Approved Components
19 12.2 Back Siphonage
13 INDEPENDENCE OF DEVICES
3 Functional Performance for Check Valves
4 Functional Performance for Vacuum Breakers, Diverters, and Vents to Air
20 14 LEAKAGE OF PROTECTION SYSTEMS WITH ATMOSPHERIC VENTS
15 DURABILITY TESTS
15.1 Aging and Corrosion
15.2 Mechanical Wear and Mineral Deposits
5 Functional Performance of Backflow Prevention Systems With Regard to Back Pressure Backflow
21 6 Functional Performance of Backflow Prevention Systems With Regard to Back Siphonage (Hose Connected Movable Outlet Faucets)
3 Formulation for ASME A112.18.3 Water
22 15.3 Inspection and Evaluation
16 VERIFICATION OF CRITICAL LEVEL [HOSE CONNECTED MOVABLE OUTLET FAUCETS WITH ATMOSPHERIC VENTS, PARAS. 8.1.1(B), (C), AND (D)]
7 Schematic Drawing of Test Facility
23 8 Verification of the Critical Level (Hose Connected Outlet Faucets With Atmospheric Vents)
25 A RATIONALE FOR SAMPLING SCHEME AND STATISTICAL PROCEDURES
26 SAMPLE CALCULATION
ALTERNATIVE SOLUTION USING CLOPPER-PEARSON NOMOGRAPH (REFERENCE [4])
NOTES APPLICABLE TO SPECIFIC PARAGRAPHS OF ASME A112.18.3-2002
28 REFERENCES

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