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ASSE 1053 2019

ASSE 1053 2019

$24.38

ASSE Standard #1053-2019 Performance Requirements for Dual Check Backflow Preventer Wall Hydrants – Freeze Resistant Type

Published By Publication Date Number of Pages
ASSE 2019 24
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ASSE 1053 establishes design and performance requirements for Freeze Resistant Dual Check Backflow Preventer Wall Hydrants, which protect the potable water supply against backsiphonage and backpressure without damage to the device due to freezing. To verify protection under the high hazard conditions present at threaded hose outlets, these devices must be field-testable. ASSE 1053 devices are classified as Type A or Type B. Type A devices automatically drain water when the hydrant valve is closed and the hose is removed to prevent damage from freezing, and Type B devices automatically drain water with a hose removed or attached, end nozzle closed, and the hydrant valve closed.

PDF Catalog

PDF Pages PDF Title
9 Section I
1.0 General
1.1 Application
1.2 Scope
10 1.3 Reference Documents
11 Section II
2.0 Test Specimens and Test Laboratory
2.1 Samples Submitted for Test
2.2 Samples Tested
2.3 Additional Instructions
12 Section III
3.0 Performance Requirements and Compliance Testing
3.1 Hydrostatic Pressure Tests
Figure 1
3.2 Water Flow Capacity and Pressure Loss
T
able 1
13 Figure 2
3.3 Deterioration at Maximum Rated Temperature and Pressure
3.4 Life Cycle Test
14 3.5 Resistance to Bending
Figure 3
3.6 Self-Draining Capabilities
15 Figure 4
3.7 Tightness of Outlet Check Valve
16 3.8 Tightness of Inlet Check Valve
3.9 Leakage from Vent Ports
3.10 Backflow Through Inlet Check Valve
17 3.11 Backflow Through Outlet Check Valve
Figure 5
3.12 Backsiphonage
18 Figure 6
Figure 7
19 3.13 Backsiphonage and Backpressure
Figure 8
3.14 Relief of Intermediate Chamber Pressure
20 Figure 9
21 Section IV
4.0 Detailed Requirements
4.1 Materials
4.2 Instructions for Markings
4.3 Installation Instructions
4.4 Repair Instructions
22 Section V
5.0 Definitions

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ASSE 1053 2019
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