A gauge and switch diaphragm protector comprising an expansion chamber mountable in a fluid conduit between the pressure source and pump switch, having sand diverting baffles mounted therein, adapted to divert sand in the fluid to the outer wall of the chamber without diminishing the pressure of the fluid.
An apparatus is provided informing when a filter located in a fuel passage between a fuel tank and a fuel injection pump has clogged a predetermined amount. The apparatus is responsive to fuel pressure downstream of the filter to provide an indication when the sensed pressure is below a predetermined value. A device for draining water separated from the fuel is also disclosed.
For a well pump installation, automatic control of the starting and stopping of the pump motor relies upon a simultaneous detection of the suction and delivery heads so that a single switch may perform the functions of both delivery pressure control and dry cutting-off.
A method for separating unmodified hemoglobin from cross-linked hemoglobin in a hemoglobin solution. The method involves contacting the hemoglobin solution with a least one dissociating agent to form a dissociation solution wherein unmodified tetrameric hemoglobin is dissociated to form hemoglobin dimers. The hemoglobin dimers are then separated from the dissociation solution, while retaining the cross-linked hemoglobin in the dissociation solution.
