Durable HVAC Construction: Features a moisture-resistant housing and high-grade internal contacts for consistent furnace limit control in high-static environments

or manifold pressure imbalances

Durable Construction: Manufactured from chemical-resistant black plastic to resist staining and wear from tea tannins

As a direct York furnace replacement part

Aprilaire 4001 Saddle Valve Durable HVAC Construction: Features aThe Aprilaire 4001 Saddle Valve is a heavy duty self piercing needle valve designed for tapping into copper water lines to supply whole house humidifiers. This component is the direct replacement for 32001616 001 and is compatible with the majority of bypass and power humidifier models, including the Aprilaire 400, 500, 600, and 700 series. Engineered for 1 4 inch OD tubing, this HVAC water line tap ensures a leak resistant connection to cold water