Dwyer Markii 26 Incline Manometer 15 Psi Plastic

Product Description

The DWYER MARKII 26 is an incline manometer designed to measure low differential pressures in HVAC, combustion analysis, and air balancing applications. Housed in a plastic case with a steel body, it reads up to 15 psi with a stated accuracy of 3 percent. The 7-inch water column range makes it well suited for duct static pressure testing, filter pressure drop verification, and similar low-pressure fieldwork. Licensed HVAC technicians and air balancing professionals are the primary installers and users of this instrument. The unit ships with 8 feet of flexible double-column plastic tubing for immediate use.

The MARKII 26 is used in residential and light commercial HVAC service, particularly for tasks requiring reliable low-range differential pressure readings. Typical applications include supply and return duct pressure measurement, combustion appliance draft verification, and airflow troubleshooting. The incline tube configuration improves readability at low pressure differentials compared to a standard vertical manometer. Screw-mount capability allows the instrument to be secured to a surface for hands-free readings during extended testing.

Key Features

• 15 psi maximum operating pressure with 3 percent accuracy rating
• 7-inch water column measurement range for low-pressure differential work
• Incline tube design improves readability at low-range readings
• Plastic case construction for lightweight field use
• Steel body provides structural durability
• Includes 8 feet of flexible double-column plastic tubing
• Screw-mount capability for stationary or panel installation

Compatibility

Designed as an OEM-style field instrument for use in residential and light commercial HVAC low-pressure differential measurement applications.

Installation Notes

Installation and use should be performed by a qualified HVAC technician familiar with low-pressure measurement instruments. Isolate or shut down the system being tested before connecting pressure tubing to avoid sudden pressure surges that could damage the instrument. Ensure tubing connections are seated fully and free of kinks before taking readings. Reference applicable ASHRAE or mechanical code guidelines when performing air balancing or combustion testing.