Wallace & Tiernan

Wallace & Tiernan

Wallace & Tiernan is a heritage brand in precision pressure measurement instrumentation, with roots dating back to the early twentieth century. The company became widely recognized for manufacturing high-accuracy analog pressure gauges, capsule pressure gauges, and pneumatic pressure calibrators used in demanding industrial environments. Wallace & Tiernan instruments are associated with reliable, long-service measurement in applications where precise pressure indication and calibration are critical to process integrity.

Originally gaining recognition in water and wastewater treatment infrastructure, Wallace & Tiernan pressure instruments have been deployed across chemical processing plants, municipal water systems, and industrial facilities. Their pneumatic calibrators and gauge accessories support maintenance, calibration, and commissioning workflows in the field and in the laboratory.

Key Product Lines

• Analog Pressure Gauges — precision Bourdon-tube gauges for process monitoring and control panels
• Capsule Pressure Gauges — low-range gauges for measuring small differential and absolute pressures
• Pneumatic Pressure Calibrators — portable instruments for on-site calibration of pressure transmitters and gauges
• Pressure Accessories — fittings, snubbers, and adapters for pressure measurement systems

Industries Served

Wallace & Tiernan pressure measurement equipment is used in water and wastewater treatment facilities, chemical and petrochemical processing plants, municipal utilities, and industrial manufacturing environments where accurate pressure monitoring is essential for safety and process control.