Description
Dwyer 2004 Magnehelic Differential Pressure Gage Overview
The Dwyer 2004 Magnehelic Differential Pressure Gage is a trusted, precision instrument designed for accurate measurement of differential pressure in HVAC, industrial, and commercial applications. Built around Dwyer’s legendary Magnehelic technology, this gage delivers reliable, repeatable readings across a 0–4.0″ w.c. (inches water column) range — making it ideal for monitoring filter loading, fan and blower pressures, air velocity, and clean room environments.
Key Features
- Measurement range: 0–4.0″ w.c. (inches water column)
- Large 4″ diameter dial face for easy, at-a-glance readings
- Dual mounting options: flange mount or flush panel mount for installation flexibility
- 1/8″ Female NPT process connections for straightforward field installation
- Compatible with air and non-combustible gases
- Magnehelic sensing mechanism — no liquid fill, no moving parts to wear out
- Rugged, low-maintenance design suited for continuous duty use
Application Suitability
The Dwyer 2004 is well-suited for a wide range of HVAC and building automation applications, including:
- Air filter differential pressure monitoring
- Fan and blower static pressure measurement
- Duct pressure and air velocity measurement
- Clean room and laboratory pressure monitoring
- HVAC system balancing and commissioning
Mounting & Installation
The 2004 supports both flange mount and flush panel mount configurations, giving installers the flexibility to integrate the gage into a wide variety of control panels, duct walls, or equipment enclosures. The 1/8″ Female NPT process connections are industry-standard, simplifying connection to existing tubing or fittings.
Why Choose the Dwyer Magnehelic Series
Dwyer’s Magnehelic gages have been the industry standard for differential pressure measurement for decades. Their frictionless Magnehelic movement provides fast, accurate response without the maintenance concerns associated with liquid-filled or mechanical gauges. The 2004 model continues this tradition with a compact, durable design built to perform in demanding HVAC environments.
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