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What are the definitions of a type 1 seal and a type 2 seals? All the reference materials and trainings that I have classify mechanical seals in terms of pusher, non-pusher, balance, unbalanced, inside, outside, double, tandem, cartridge, component, etc. When people talk of Type 1, Type 1B...

I just learned of a pump opperator that wants to run a multistage centrifugal pump in parallel with a possitive displacement plunger pump. Has anyone seen or heard of this being done before? If so what would be the justification from an operational standpoint for doing this. What measures...

Does anyone have a equation for calculating the Theoretical Suction Specific Speed or NPSHr of an impeller based on its geometry?

If the manufacture only can supply an intermittent duty pump curve for a reciprocating positive displacement pump, and you have a new application that requires continuous duty operation what general limitations and recommendation should be taken into consideration for use of the pump in the new...

For a triplex pump moving hot glycol at 250 deg. F, what options/accessories/recommendation need to be considered/included? How would this differ from a pump moving salt water with the same operating condition at ambient temperatures.