ASSE - 1024
Performance Requirements for Dual Check Backflow Preventers
| Organization: | ASSE |
| Publication Date: | 1 July 2023 |
| Status: | active |
| Page Count: | 20 |
scope:
Description
This device consists of 2 independently acting check valves, internally force loaded to a normally closed position, designed, and constructed to operate under intermittent or continuous pressure conditions.
Size Range
Nominal device sizes shall be 1/4" to 2" (8 to 50 DN).
Working Pressure
The device shall be designed for a maximum working pressure of not less than 160 psi (1103 kPa).
Temperature Range
Cold water service ranges from 40.0 °F to 110.0 °F (4.4 °C to 43.3 °C), or the manufacturer's maximum rated temperature, whichever is greater.
Hot water service ranges from 40.0 °F to 180.0 °F (4.4 °C to 82.2 °C), or the manufacturer's maximum rated temperature, whichever is greater.
Flow Capacity
The device shall meet the minimum water flow capacities at or below the maximum pressure loss specified in Section 3.5.
Repairability
The internal parts of the device shall be accessible for inspection, repairs, or replacements. All replaceable parts of the assemblies of the same size and model shall be interchangeable with the original parts.
Document History
