DUNGS 266934 0.4–4″ WC SPDT NEMA 4 Air Pressure Switch with 1/4″ NPT Positive & 1/8″ NPT Negative Ports

Description

The DUNGS 266934 air pressure switch is designed to monitor airflow and pressure conditions in HVAC, combustion, and gas safety systems. With an adjustable sensing range of 0.4 to 4 inches water column (WC) and a single‑pole double‑throw (SPDT) contact output, this switch helps confirm proper airflow or venting before allowing system operation. It is housed in a NEMA 4 enclosure for protection against dust and water and features 1/4″ NPT positive and 1/8″ NPT negative ports for versatile pressure line connections and accurate measurement.

Key Features:

• Air pressure switch with adjustable 0.4–4″ WC sensing range

• SPDT contact output for reliable signal control

• NEMA 4 enclosure for dust and water protection

• 1/4″ NPT positive port and 1/8″ NPT negative port for flexible connections

• Designed for HVAC, combustion, and gas safety airflow monitoring

• Auto‑reset design for continuous operation