per ANSI Z21

Always inspect the heat exchanger for cracks if this safety switch opens frequently

Field Conversion Ready: Designed specifically to adapt 700 and 710 Series manual valves to 120VAC thermostat control

Technical Precision: Includes a precision-machined pin to ensure a secure

8910DPA33V06 is the cross for C25DNF330C

Dwyer Instruments A-491 Pressure Tip 322838-754 per ANSI Z21The Dwyer Instruments A 491 Pressure Tip is a professional grade static pressure sensor designed for accurate airflow monitoring in commercial and industrial HVAC systems. Featuring a 6 inch straight 304 stainless steel probe, this duct mount pressure tip is engineered to deliver reliable differential pressure measurement when paired with manometers, Magnehelic gauges, or pressure switches. The integrated mounting flange comes with a rubber gasket and