The 710 Pressure Vacuum Breaker Assembly Protects Against Backsiphonage of Contaminated Water Into The Potable Water Supply Where a Potential High Health Hazard Exists. With Fewer Parts And a Lightweight, Compact Body, The Zurn Wilkins 710 Pressure Vacuum Breaker Assembly is a Low-Maintenance, Cost-Effective Solution For High-Hazard Irrigation Applications – Commercial or Residential. It Also Features a Maximum Pressure of 150 psi And a Temperature Range of 33°F to 140°F. The 710 is Available in 3/4" And 1" Sizes And is More Compact Than Any Competitor Valve in The Marketplace. Bring Effortless Performance to Any Residential And Commercial Irrigation Systems. | Wilkins | 34-710