ASSE 1056 2013

$24.38

ASSE Standard #1056-2013 Performance Requirements for Spill Resistant Vacuum Breaker

Published By	Publication Date	Number of Pages
ASSE	2013	24

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Category: ASSE

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Description

his standard applies only to those assemblies classified as spill resistant vacuum breaker assemblies (SVB). These assemblies are designed for installation in water systems that are normally under continuous pressure conditions. Spill resistant vacuum breaker assemblies are installed in the water supply lines to prevent the backflow of non-potable material into the potable water supply caused by backsiphonage only. They are not for use in any system where backpressure is applied to the assembly. When the system is pressurized, the air inlet valve closes to prevent a flow through the

PDF Catalog

PDF Pages	PDF Title
9	Section I 1.1 Application 1.2 Scope
10	1.3 Limitations on Design
11	1.4 Reference Standards
12	Section II 2.0 Test Specimens 2.1 Samples Submitted 2.2 Samples Tested 2.3 Drawings 2.4 Rejection
13	Section III 3.0 Performance Requirements and Compliance Testing 3.1 Hydrostatic Test of Complete Assembly 3.2 Hydrostatic Test of Check Valve Figure 1 Figure 1A
14	Figure 2 3.3 Deterioration at Extremes of Temperature and Pressure
15	Figure 3 T able 1 3.4 Shock (Water Hammer ) Test
16	Figure 4 3.5 Drip Tightness of Check Valve 3.6 AIr Inlet Valve Cosing and Opening Pressure
17	3.7 Air Vent Valve Capacity 3.8 Backsiphonage Prevention T able 2
18	Figure 5 Figure 6 Figure 7
19	Figure 8
20	3.9 Rated Flow and Maximum Allowable Pressure Loss T able 3
21	Section IV 4.0 Detailed Requirements 4.1 Materials
22	4.2 Instructions 4.3 Marking
23	Section V 5.0 Definitions