Description
The Markel Products Co. 05460702 is a duct heater flow switch with compressor, designed to verify adequate airflow before allowing a duct heater to energize. Operating at a 0.5″ water column (WC) pressure differential setpoint, this switch provides essential safety protection by ensuring that sufficient airflow is present through the duct system — preventing the heater from operating under low- or no-flow conditions that could cause overheating or equipment damage.
Built to Markel’s exacting standards, this flow switch is a direct OEM replacement component, making it an ideal solution for service technicians and contractors maintaining or repairing Markel duct heating equipment.
Key Features
- Designed for use with Markel duct heater systems
- 0.5″ water column (WC) pressure differential setpoint
- Integrated compressor mechanism for reliable differential pressure sensing
- Prevents duct heater operation under insufficient airflow conditions
- OEM replacement part for Markel duct heating equipment
- Helps protect heating elements from overheating damage
Applications
- Commercial and industrial duct heating systems
- Electric duct heater airflow safety interlock
- Replacement for failed or worn flow switch components in Markel units
Specifications
- SKU: 05460702
- Brand: Markel Products Co.
- Type: Duct Heater Flow Switch with Compressor
- Pressure Differential: 0.5″ WC (water column)
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