Performance Requirements for Backflow Prevention Devices for Hand-Held Showers
|Publication Date:||1 January 2005|
These devices provide backflow protection against backsiphonage and backpressure in handheld showers. These are separate devices or are integral with wall-mounted or deck-mounted tub fillers, flexible hoses, or components that are attached to shower arms.
The device(s) and associated components shall comply with the requirements of this standard and the applicable requirements of ASME A112.18.1 unless stated otherwise herein.
Minimum Working Pressure
The device shall be designed to withstand an inlet working pressure of a minimum of 125.0 psi (861.9 kPa).
The device shall be designed to function at temperatures from 40.0 °F to 120.0 °F (4.4 °C to 48.9 °C).
Maximum Temperature Spike
The device shall withstand temperature spikes up to 150 °F (65.6 °C).