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ASSE 1024

Performance Requirements for Dual Check Backflow Preventers

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Organization: ASSE
Publication Date: 1 January 2018
Status: active
Page Count: 20
ICS Code (Check valves): 23.060.50
ICS Code (Water supply systems): 91.140.60
scope:

Description

This device 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. 

Size Range

The device shall be designed to accommodate the following nominal pipe sizes: ¼ NPS, ⅜ NPS, ½ NPS, ⅝ NPSM, ⅝ NPS, ¾ NPS, 1 NPSM, 1 NPS, 1-¼ NPSM, 1-¼ NPS, 1-½ NPS, and 2 NPS (8 DN, 10 DN, 15 DN, 18 DN, 20 DN, 25 DN, 32 DN, 40 DN, and 50 DN). 

Pressure Range

The device shall be designed for a working pressure of up to a minimum of 160 psi (1103 kPa).

Temperature Range

a) 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.

b) 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. 1.2.5 Flow Capacity The device shall meet the minimum water flow capacities at or below the maximum pressure loss specified in Section 3.4

Document History

ASSE 1024
January 1, 2018
Performance Requirements for Dual Check Backflow Preventers
Description This device consists of two (2) independently acting check valves, internally force loaded to a normally closed position, designed and constructed to operate under intermittent or...
February 1, 2004
Performance Requirements for Dual Check Backflow Preventers
Description This device consists of two independently acting check valves, internally force loaded to a normally closed position, designed and constructed to operate under intermittent or continuous...
February 1, 2004
Performance Requirements for Dual Check Backflow Preventers
A description is not available for this item.
September 1, 1994
Performance Requirements for Dual Check Valve Backflow Preventers
A description is not available for this item.
January 1, 1994
Performance Requirements for Dual Check Valve Type Backflow Preventers
A description is not available for this item.

References

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