Itt Flygt Ab

Itt Corporation

Bengt Sodergard

Folke Landquist

Thomas Bartholf

A closed, hollow body has a suspending and tethering, electrical cable joined thereto, the latter conducting electrical power to and from a microswitch confined within the body. A switch actuator is engaged and disengaged by a weight, within the body, the weight being pivotably supported therein, and having a center of gravity which is offset from a central, longitudinal axis of the sensor.

Switch-actuating, liquid-level sensor

A waste water pump station is provided for two submersible pump units which are attached to connection units on the station wall or on a shelf of the wall. The two connection units are attached in a reversed manner with respect to one another making it possible to mount them very close to the wall.

Waste water pump station

A valve housing has a chamber formed therewithin, and an inlet and an outlet for accommodating fluid flow through the chamber along a given flow path. The housing further confines a free ball therein, and hydraulic-fluid filed compartments with flexible walls. Intermediate the inlet and outlet, the housing has a valve seat formed. Fluid pressure in the chamber causes one compartment to collapse and the flexible wall of the other to expand. The expanding wall, and capturing fluid flow, moves the ball to the seat to halt flow through the chamber, after an initial period of free flow. The method comprises providing the chambered housing, disposing the ball in the chamber, communicating the inlet with a pump outlet, and confining the flexible-walled compartments in the chamber.

Method for automatically circulating and then halting circulation of

Valve

The centrifugal pump having a closed type impeller with two cover discs and vanes therebetween. The inner parts of the vanes cooperate with a non-rotating insert part for cutting within the pump inlet. The lower cover disc together with the non-rotating insert part in the pump inlet creates a radial seal.

Growing community of inventors

Vasby, Sweden

Bengt Sodergard