Dwyer Instruments

Dwyer Instruments is a leading manufacturer in the controls and instrumentation industry, with long-established brand names like Magnehelic® differential pressure gauges and Photohelic® pressure switch/gauges. Dwyer differential pressure gauges are exceptionally responsive, can operate in any position, and are resistant to shock and vibration. The Dwyer family also includes Mercoid Controls, Love Controls, W.E. Anderson and Proximity Controls.

Lesman stocks several sizes and ranges of Dwyer's most popular gauges, and they can be ordered easily through our secure online store.

Control Valves
Dwyer Series 2000VA/3000WA Hi-Flow® Globe Control Valves
Differential Pressure Gauges Shop Now!
Dwyer Capsuhelic® 4000 Series Differential Pressure Gauges
Dwyer Magnehelic® 2000 Series Low Differential Pressure Gauges
Dwyer Minihelic® II 2-5000 Series Low Differential Pressure Gauge
Differential Pressure Switch/Gauges
Dwyer Photohelic Series 3000 Differential Pressure Switch/Gauges
Mechanical Flow Switches
Dwyer V4 Series Flotect Vane-Operated Flow Switch
Dwyer V6 Series Flotect Mini Flow Switch
Valve Accessories
Dwyer Mark Series Valve Position Indicator