Control valves are used to change process conditions such as flow, temperature, level, and pH. A complete control system would include a sensor, controller, positioner or current to pressure transducer, and control valve. Globe valves, such as the Dwyer Hi-Flow™ Series, are a common type of control valve. In the example shown, a Hi-Flow™ control valve is controlling temperature by varying the amount of steam or cold water added to the process. Continue reading “Control Valve Sizing”
Ask the Expert – Series 626 & 628 Pressure Transmitters Offer Optional NSF Approval
Question: I have been searching for a pressure transmitter with an NSF 61 certification for my drinking water application. Does Dwyer have any recommendations? Continue reading “Ask the Expert – Series 626 & 628 Pressure Transmitters Offer Optional NSF Approval”
Ask the Expert – Measuring Multiple Room Pressures with the WDPM
Question: Measuring multiple room pressurizations proves time consuming and difficult; do you have something that measures multiple rooms at the same time? Continue reading “Ask the Expert – Measuring Multiple Room Pressures with the WDPM”