Abstract: A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve is operatively connected to the float. The snap acting valve has a rotatable port member that moves so as to switch to exhaust porting when the float falls to the low level position. The port member further switches to motive porting when the float rises to the high level position. As a result, fluid filling the pump tank causes the float to rise from the low level position to the high level position during exhaust porting. Fluid exiting the pump tank causes the float to fall from the high level position to the low level position due to introduction of motive gas during motive porting.

Abstract: A gas pressure driven fluid pump having an electronic cycle counter. The pump has a pump tank with a liquid inlet and a liquid outlet. A switching mechanism is operative within the pump tank for switching to exhaust porting when the fluid level within the pump tank falls to a low level position and switching to motive porting when the fluid level within the pump tank rises to a high level position. An electrical counter circuit is operatively connected to the pump tank for incrementing a stored count in response to the fluid level within the pump tank rising to a predetermined level.

Abstract: A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve control mechanism uses magnetic interaction to switch between exhaust porting and motive porting. Fluid exiting the pump tank causes the float to fall from the high level position to the low level position due to introduction of motive gas during motive porting. Exhaust porting begins when the float falls to the low level position.

Abstract: A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve is operatively connected to the float. The snap acting valve has a rotatable port member that moves so as to switch to exhaust porting when the float falls to the low level position. The port member further switches to motive porting when the float rises to the high level position. As a result, fluid filling the pump tank causes the float to rise from the low level position to the high level position during exhaust porting. Fluid exiting the pump tank causes the float to fall from the high level position to the low level position due to introduction of motive gas during motive porting.

Abstract: A fluid flow distributor, to be used with a steam trap, has a single valve body which includes a steam inlet operatively connected to a steam feeding pipe, a steam outlet operatively connected to the steam trap inlet and in selective fluid communication with the steam inlet through a first valve element provided in this fluid communication, and which selectively allows and blocks said fluid communication, a condensate inlet operatively connected to the steam trap outlet, and a condensate outlet which is open to the outside of the single valve body and provided with fluid communication with the condensate inlet thereof.

Abstract: A thermodynamic condensate trap comprises a body 2 and a cap 18 which define a chamber 24. Inlet and outlet passage 8, 10 emerge into the trap chamber 24 at a seating face 12. A valve element in the form of a disc 26 is movable within the chamber 24 to open and close a flow path through the chamber 24 between the inlet passage 8 and the outlet passage 10. The cap 18 has thermal insulating means, for example in the form of air spaces 30, 32 to reduce heat transfer between the trap chamber 24 and the ambient surroundings. This reduces the cycle time of the trap, and consequently, extends the useful life of its components.