OK Equipment K-HDV2516 Check Valve for Drain Pipes Size 16 – 25-Quality Guarantee-Fast Shipping

Description

Prevents odors, insects, and small animals from entering the house from the drain hose or drain pipe.
Prevents the poking sound caused by the drain outlet of the air conditioner.
It also prevents air from returning back flowing while allowing the drain to drain smoothly, preventing outside air and odors from entering from entering the outside, and also prevents the poking sound caused by the drain outlet in an air-tight home