This model is engineered for vertical installation

94" WC open setpoint

Ensure all control wiring is secured to the line set with tie straps to prevent mechanical interference with fan blades

maintaining consistent airflow and safety without manual intervention

This model is rated for saturated steam up to 38 psig

Barksdale D1H-H18SS Switch 320720-756 This model is engineered forThe Barksdale D1H H18SS is a heavy duty diaphragm pressure switch designed for precision sensing in industrial and HVACR process control applications. Housed in a NEMA 4 aluminum enclosure, this housed pressure switch features a single setpoint mechanism with an adjustable range of 0. 4 to 18 psi. The 316 stainless steel diaphragm and pressure connection ensure chemical compatibility and long term durability when monitoring air, water, or oil systems.