Dwyer 1211-24 Slack Tube Manometer 50 Psi

Product Description

The DWYER 1211-24 is a slack tube manometer designed for measuring differential pressure in HVAC, plumbing, and general industrial applications. It reads from -12 to 12 inches of water column (WC) and is rated to a maximum of 50 psi. The unit features a plastic body and case construction, keeping it lightweight at 2 pounds. At 32.75 inches overall height, the slack tube design provides a stable, readable column for low-pressure measurement work. HVAC technicians and service professionals install this instrument when verifying gas pressure, static pressure, or duct system balance during commissioning or troubleshooting.

This manometer is suited for residential and light commercial HVAC service, gas appliance setup, and duct pressure diagnostics. Its -12 to 12 inch WC range covers typical low-pressure measurement tasks encountered when checking furnace gas manifold pressure, air handler static pressure, or ventilation system balance. The 130 degrees F maximum operating temperature makes it appropriate for most standard mechanical room and duct environments. It is a field-portable instrument that technicians carry for routine service calls and system commissioning work.

Key Features

• Measurement range of -12 to 12 inches water column for low-pressure differential readings
• 50 psi maximum rated pressure provides a margin of safety during connection
• 130 degrees F maximum operating temperature suits standard HVAC and mechanical environments
• Plastic body and case construction keeps the unit lightweight at 2 pounds
• 32.75 inch overall height delivers a long fluid column for accurate, readable measurements
• Compact 2.17 inch width for easy handling and field portability

Compatibility

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

Installation Notes

A licensed HVAC technician or qualified service professional should install and use this instrument. Shut off the system and isolate pressure taps before connecting or disconnecting manometer tubing to avoid fluid loss or pressure spikes. Ensure all fittings are secure and tubing is free of kinks before applying system pressure. Follow applicable mechanical and gas codes, including IFGC guidelines, when using this instrument for gas appliance pressure verification.