The HD Freeze Control Adaptor lets your Koenders HD electric aeration system keep working through winter. By bleeding off a small, steady amount of air, it keeps the line moving and helps prevent the freeze-ups that would otherwise shut a system down in the cold, so you can maintain an open hole and oxygen through the hardest months. The bleed-off valve is included.

What is included

• Freeze control adaptor for Koenders HD electric aeration systems
• Bleed-off valve included
• Supports winter aeration and helps maintain an open water hole
• Helps prevent airline freeze-up in cold climates