Dwyer 2304 Differential Pressure Gauge

Overview

The Dwyer 2304 is a precision differential pressure gauge designed for industrial and commercial applications requiring accurate pressure measurement across a 2-0-2 inch H₂O range. Built with a die-cast aluminum case finished in baked dark gray hammerloid, the gauge combines durability with a professional appearance suitable for both surface and flush panel mounting.

The gauge features jeweled, shock-resistant bearings that provide virtually friction-free motion and extended operational life. Its silicone rubber diaphragm with integrally molded O-ring ensures reliable sealing and accurate response to pressure changes. The precision litho-printed scale offers excellent readability, while the red-tipped pointer provides clear indication across the full pressure range.

Key Features

• Pressure range: 2-0-2 inches of water column (H₂O) with 0.10 inch H₂O minor divisions
• Jeweled bearings with shock-resistant mounting for smooth, friction-free operation
• Silicone rubber diaphragm with integrally molded O-ring for reliable sealing
• Die-cast aluminum case with iridite dip coating for superior corrosion resistance (168-hour salt spray rated)
• Baked dark gray hammerloid exterior finish for durability and professional appearance
• Clear plastic face with high impact resistance for undistorted viewing
• Red-tipped heat-treated aluminum pointer for excellent visibility
• Precision litho-printed scale for accurate and easy-to-read measurements
• Blowout plug relief valve for overpressure protection (approximately 25 PSIg / 1.7 bar)
• Zero adjustment screw accessible without removing gauge cover
• Dual mounting options: surface or flush panel mounting
• High-viscosity silicone fluid damping for smooth pointer motion

Applications

• HVAC system pressure monitoring and air flow measurement
• Industrial process differential pressure measurement
• Laboratory and testing environment pressure monitoring
• Clean room pressure differential monitoring