Changes in the single-stage pump
efficiency of the all metal screw pump are used to analyze the effect of the clearance on the pump efficiency.
They include two double-entry pumps from 1913 and a single-stage pump
Pfeiffer's rotary vane pumps are offered in two configurations: a single-stage pump
system with a cover inlet pressure range of 1,000 to approximately 0.5 mbar, and a two-stage serial pump system (like the DuoLine) that have an expanded inlet pressure in the high-vacuum range of up to 0.005 mbar.
Its flow pattern is more complex than that of a single-stage pump
. A rotational flow exists at the impeller inlet, but the first stage and flow in the channel are similar.
The standard 1,950 USgpm (7,3811pm) single-stage pump
provides fire suppression output to all discharges at 240psi, delivering full capacity of all discharges simultaneously.
In the standard hydraulics package, a Parker single-stage pump
is belt driven off the engine.
The UNO 30M rotary vane pump is a single-stage pump
with magnetic coupling to maximize uptime performance and eliminate oil leaks.
integrated water tank, 500 gpm single-stage pump
, 50 gal.
The new HL160M is a single-stage pump
set capable of heads tO 600 ft.