Description
The Weil McLain 640-000-019 Water Pressure Switch W/Mount Combi is a pressure-sensing part, which detects and measures in a hydronic heating circuit and sends an electrical signal when set thresholds are met in HVAC systems. It is directly sewn on piping or system structure and linked to control circuitry to use it to operate and to be safe, depending on pressure. This switch is installed in water loops where a regular pressure is needed to ensure the regulation and protection of the HVAC systems.
