The Zurn Wilkins 720A Pressure Vacuum Breaker Assembly is used in high hazard applications for back siphonage protection. Applications are primarily non-potable residential and commercial irrigation systems. Designed for installation on irrigation water lines to protect against back-siphonage of contaminated water into the potable water supply. Assembly shall provide protection where a potential health hazard exists.
Materials
WARNING!
Irrigation systems supplied by domestic or private potable water systems are considered to be a potential pollution hazard to the water supply. These systems must include protection to prevent possible backflow of irrigation water into the potable water supply.
Federal law requires a proper backflow device to be installed on any watering system to prevent contamination of the supply; whether it be pump or city water. Check your local water authority for installation requirements & codes. In many rural areas; specific requirements for landscape irrigation systems may not be covered in local plumbing codes and/or enforcement may be limited. HOWEVER...limitation in local authority does not alter the basic requirement for protection of the potable water supply.
| PIPE SIZE | 5 FT/SEC. | 7.5 FT/SEC. | 10 FT/SEC. | 15 FT/SEC. |
|---|---|---|---|---|
| 1/8" | 1 | 1 | 2 | 3 |
| 1.4" | 2 | 2 | 3 | 5 |
| 3/8" | 3 | 4 | 6 | 9 |
| 1/2" | 5 | 7 | 9 | 14 |
| 3/4" | 8 | 12 | 17 | 25 |
| 1" | 13 | 20 | 27 | 40 |
| 1 1/4" | 23 | 35 | 47 | 70 |
| 1 1/2" | 32 | 48 | 63 | 95 |
| 2" | 52 | 78 | 105 | 167 |
This Pressure Vacuum Breaker (PVB) protects against siphoning water back into the water supply in situations where fertilizers, insecticides, and other toxic chemicals could contaminate the potable water. For easy and versatile installation, maintenance, and testing the 720A has a multitude of innovative features that conspire to create the ultimate experience in backflow prevention.
A Zurn Wilkins 720A Pressure Vacuum Breaker is perfect for preventing backflow in high-risk areas where back-siphonage could lead to dangerous pollution of drinking water. Without a backflow prevention device, one risks carcinogens and other harmful solutes entering the main supply, which feeds bathing, drinking, and cleaning water supplies. Buy yours today at Sprinkler Warehouse.
Find your state-of-the-art backflow device and learn how to install it, getting top-of-the-line protection from dangerous runoff and backsiphonage. This PVB is rated for up to 150 PSI and is made of a bronze body to support maximum durability. Rated for operation at temperatures from 33 to 110° with corrosion-resistant interior pieces, the PVB has test cocks on the centerline of each valve for that added versatility.
The Zurn Wilkins 1 in. PVB is for use in light commercial and residential irrigation systems where health hazards may be posed due to environmental or man-made hazards. Protect the waterlines from chemicals with a backflow or risk drinking contaminated water. Polluted water can cause all sorts of ills depending on the pollutant. Buy your backflow today at Sprinkler Warehouse and get quick shipping.
Pressure Vacuum Breakers like the 720A rely on the simple principle of a check valve and the air pressure of the atmosphere to prevent backflow. When air pressure is higher than the water pressure, an inlet opens and stops the siphoning effect.
The 720A should be installed in an open and accessible space for regular testing and maintenance. The backflow is also required to be installed in accordance to local guidelines, often including the hire of a licensed professional. If installed inside assure proper drain arrangements.
Often when the 720A is damaged, the bronze body and bonnet are actually intact, and it's only the corrosion-resistant interior pieces that need replacing. Simply vent pressure before removing each of the pieces from the interior of the backflow, then replace the parts and re-pressurize the system.
| Brand | Wilkins |
|---|---|
| Test Cocks | 2 FEMALE |
| Max Working Pressure | 150 PSI |
| Hydrostatic Test Pressure | 300 PSI |
| Temperature Range | 32F to 110F |
| Main Valve Body Materials | Bronze |
| Elastomers | Silicone |
| Springs | Stainless Steel |
| Warranty | 1 Year |
| Size | 1 in. |
| Connection | FPT |
| Lead Free | Not Lead Free |
