ASSE 1024 2017

$24.38

ASSE Standard #1024-2017 Performance Requirements for Dual Check Backflow Preventers

Published By	Publication Date	Number of Pages
ASSE	2017	20

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Category: ASSE

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Description

This standard applies to devices classified as dual check backflow preventers. The purpose of this device is to keep polluted water from flowing back into the potable water system when pressure is temporarily higher in the polluted part of the system than in the potable water piping. The devices covered by this standard are intended to protect the potable water supply from low hazard pollution at residential service lines and individual outlets. Dual check backflow preventers consists of two (2) independently acting check valves, internally force loaded to a normally closed position, designed and constructed to operate under intermittent or continuous pressure conditions with cold water service. Usage with hot water is limited to the temperature specified by the manufacturer.

PDF Catalog

PDF Pages	PDF Title
9	Section I 1.0 General 1.1 Application 1.2 Scope 1.3 Reference Standards
10	Section II 2.0 Test Specimens 2.1 Samples Submitted for Test 2.2 Drawings 2.3 Rejection
11	Section III 3.0 Performance Requirements and Compliance Testing 3.1 Connection Torque Table 1
12	3.2 Deterioration at Maximum Rated Temperature and Pressure Figure 1 Table 2
13	3.3 Hydrostatic Test of Complete Device Figure 2 3.4 Hydrostatic Leakage Tests of Check Valves
14	Figure 3 3.5 Flow and Pressure Loss Table 3
15	3.6 Drip Tightness of Check Valves 3.7 Check Valve Operation
16	3.8 Dual Check Valve Integrity at Minimum Intermittent Rated Flow Table 4
17	Section IV 4.0 Detailed Requirements 4.1 Materials
18	4.2 Repairability 4.3 Instructions for Marking and Installation
19	Section V 5.0 Definitions