The 1” Freeze Repair Kit is a complete replacement solution designed to restore freeze-damaged pressure vacuum breakers (model 420 and 420XL). This genuine OEM kit includes all the key components needed to repair the air inlet and check valve mechanisms, allowing for safe and efficient function of backflow preventers after freeze damage. Built from durable, lead-free materials, the kit ensures long-lasting performance and compliance with ASSE® 1020 and CSA® standards.