Toro 53300, 220-13, 220-14, 220-54, 220-04 installation instructions Installation Instructions

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. Installation of this device should conform to local building and plumb- ing codes as they apply. Refer to the “Installation Requirements” on page 2 prior to installing this device.

Introduction

The Toro Model PVB is comprised of a positive-seating check valve, a spring-loaded vent float assembly
(located down stream of the check valve), quarter-turn ball valves on the inlet and outlet ports and test cocks
located upstream and downstream of the check valve. The vent float assembly is spring loaded to the open
position and will allow air to enter the system when line pressure drops to 1 PSI (.07 kg/cm	2) or below, thus
preventing back-siphoning. This feature permits installation of irrigation control valves downstream of the
PVB. Recommended operating pressure range is 25–150 PSI (1.75–10.6 kg/cm	2).

Figure 1 – For Outdoor Installation Only

NOTE TO INSTALLER:

PVB devices MUST BE installed outdoors.

All PVB units must be installed according	CLOSE
to local codes and are NOT APPROVED for	OPEN
indoor installation (i.e., basement or garage).	C.L.
	Critical Level
	Line

12" (30.5cm)

minimum

Sprinkler

Control

Valve

PVB

RELEASED Version ©Toro 2006-2006