Wilkins RK2-720A | Pressure Vacuum Breaker Repair Kit, 1 1/4" - 2"The Wilkins RK2 720A is a complete repair kit for 1 1 4", 1 1 2", and 2" Model 720A Pressure Vacuum Breaker Assemblies , providing long lasting protection from backsiphonage of contaminated water into the potable water supply . Key Specifications: Compatible Sizes: 1 1 4 Inches, 1 1 2 Inches, 2 Inches For Use With: Model 720A Pressure Vacuum Breaker Notable Certifications: Safe Drinking Water Act compliant Body Material: Plastic, Rubber, Steel NOTICE: