Toro 220-03の取扱説明書

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Installation Instructions
3/4" PVB, Models 220-03 and 220-13 (80-0550 pre-1993)
1" PVB, Models 220-04, 220-14 and 220-54 (80-0560 pre-1993)
1" PVB, Model 53300
Notice to Installer — This device must not be installed indoors.
The Toro PVB (Pressure Vacuum Breaker) is designed to prevent backflow of contaminated water into the potable
water system due to back-siphoning conditions only. This device should not be installed indoors or where
backflow due to back pressure may occur. Installat

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M W W P 0 Installation Requirements The following list of installation requirements is provided to assure maximum performance of the Toro PVB. Read this list completely prior to installation. The installed height of the PVB, when measured at the Critical Level line, must be at least 12" (30.5cm) above the highest downstream water outlet (sprinkler, hose bib etc.). Refer to Figure 1 for location of the Critical Level line. Provide an accessible location for periodic inspection and testing of