How can I model an RPZ device (reduced pressure principle backflow preventer)?

Product(s): HAMMER
Version(s): 08.11.XX.XX and 10.00.XX.XX
Area: Modeling

Problem

How can I model an RPZ device (reduced pressure principle backflow preventer)?

Solution

Currently, HAMMER cannot directly model this device. One of two possible workarounds can be employed:

1) Place two check valve nodes and model a TCV valve between them that discharges to a reservoir. Develop a pattern of valve closure based on when the reverse flow occurs.

2) Use a surge valve between the two check valve nodes, modeled as a SAV.

[Solution ID#: 500000067195]

See Also

Article: How do I model devices, control structures, or other elements the software might not explicitly provide when modeling my system?

Forum: Distribution Sytem Wide Hammer and Transient Analysis of RPZ

Forum: RPBP Valve

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