The idea of putting an electric motor under water makes most people uneasy, but slowly over the last 50 years, the use of submersible pumps has grown throughout North America. Industries here have evolved in their ways of making choices of pumping equipment. There is a trend toward submersibles pumps over other options like self-priming […]
Are you experiencing any of these issues with your pump? Pump Does Not Prime Pump Ceases to Deliver Liquid After a Time Pump Leaking at Mechanical Seal Housing Pump Takes Excessive Power Not Enough Liquid Pump Bearings have Short Life Not Enough Pressure Pump Vibrating or Overheating Download this guide to determine what might be causing […]
Pipe bursts as a result of transients and surges within a piping network are very common problems throughout the world. Not only are the maintenance costs of these repairs extremely expensive, but when you add in possible litigation for third party damages, combined with the potentially significant value (cost) of the lost water, you can […]
Air-operated double diaphragm pumps (AODD) are preferred in transfer applications due to a simple design that makes them easy to operate and cost effective to repair. To achieve top performance, end users must install and operate these pumps correctly. In a matter of minutes, common issues can be corrected with the right information. This Guide provides […]
Greenhouse Gas(GHG) reporting requirements highlight the need to reduce gas leakage at the point where most of it occurs – reciprocating compressor packing cases. A Gulf Coast energy company took the initiative to control this leakage from six of their compressors in natural gas transmission service. The company’s Ariel JGT single-stage machines have suction pressures […]
Gas compressor applications on offshore production platforms and FPSO (Floating Production Storage and Offloading) are tough on compressor valves. The gas composition from the well and associated processes often includes heavy hydrocarbons, H2S and water. Furthermore, the gas composition changes frequently during operations, making it difficult to optimize a valve design for all conditions. A […]
A major US pipeline transmission and storage company in the Great Lakes region was struggling with decreasing service life for rings, riders and packing due to debris from a plugged inlet scrubber, lubrication issues from neglected pumps, liquids from a wet inlet and worn cylinders. The pipeline company had been using carbon-filled PTFE products from […]
After having success with Isomag’s in top drive applications, NOV decided to use the Isomag MP-V3 to replace the industry standard labyrinths on wench gearboxes. The upgrade proved worthwhile when leaks and offshore environment contamination no longer occured. While effectively protecting the bearings these older style Isomags were found to run at relatively high face temperatures, […]
The Enbridge pipeline across North America saw issues with bearing contamination in Sulzer pumps being sealed with industry Standard labyrinths. After Isomags were spec’d in 2008 the contamination was eliminated and since then 366 units have been installed on Sulzer HSB pumps. These units are still running smoothly today. Download below to read more
The use of variable-frequency drives (VFDs) to control AC motors has increased dramatically in recent years. In addition to their low operating cost and high performance, they save energy. Today, the challenge facing system designers and engineers is to minimize damage to AC motors from shaft current. From its first minute of operation, a VFD […]
All major manufacturers of 3-phase AC induction motors offer “inverter-duty” or “inverter-ready” models, but while these motors have inverter-rated insulation to protect the windings, their most vulnerable parts — the bearings — are too often ignored. Without some form of mitigation, shaft currents can discharge through bearings, causing motor failure and downtime. To be considered […]