Do PD Rotary Pumps Require Pressure Relief Valve?
One day Mr. Pandey, operator at a chemical plant, was overseeing the raw material unloading from the truck to the storage tank. The pump for unloading this thick raw material was a positive displacement (PD) gear pump. Suddenly, the level gauge...
Online Tools (Unit Conversion, NPSHa calculations, Chemical Compatibility)
Though the world has become interconnected and there is standardization of most technological products, yet companies cling to the units they follow traditionally for various liquid/ system parameters. For example, some companies continue to use GPM and PSI for flow and...
Mechanical Seal Problems? Consider Sealless Magnetic Drive PD Rotary Pumps
In a Dec 2008 survey of industrial pump users, top three of 12 identified needs were “eliminating leakage”, “simple installation, operation, and maintenance”, and “minimizing energy uses.” Any pump user will vouch that no. 1 cause of pump failure is mechanical...
New Pump Is Not Developing Pressure
Few years ago, Mr. Pandey, operations manager at a chemical plant, called me, “This new gear pump I bought from you a week back is no good.” I probed, “Pandeyji, why do you think this pump is not good?” After few...
