Description
The Dwyer A-421 Static Pressure Tip is a precision-engineered sensing accessory designed to measure static pressure within HVAC ductwork and air handling systems. Built to Dwyer’s exacting standards, this tip connects to manometers, magnehelic gauges, and other differential pressure instruments to deliver reliable, repeatable pressure readings in air distribution and ventilation applications.
Key Features
- Designed for accurate static pressure measurement in ductwork and air systems
- Compatible with Dwyer manometers, Magnehelic gauges, and other differential pressure instruments
- Streamlined tip profile minimizes velocity pressure interference for true static pressure readings
- Durable construction suitable for continuous HVAC field and installation use
- Easy insertion through standard duct test ports or drilled access points
- Lightweight and portable — ideal for field diagnostics and commissioning
Typical Applications
- HVAC duct system static pressure testing and balancing
- Air handling unit performance verification
- Filter pressure drop measurement
- Fan and blower performance diagnostics
- Building automation and commissioning work
Why Choose Dwyer?
Dwyer Instruments has been a trusted name in pressure, flow, level, and temperature measurement for decades. The A-421 Static Pressure Tip reflects Dwyer’s commitment to accuracy and durability, making it a go-to accessory for HVAC technicians, engineers, and building automation professionals who demand dependable test and measurement tools.









