Valve for a water-supply system
AssigneeFranz Kaldewei GmbH & Co. KG
InventorsThomas Schmidt, Tobias Meyer
Life of this patent
Estimating the term…
Abstract
A valve for a plumbing system has a housing with an inlet and an outlet and a valve body movable in the housing between a throttle position with a decreased a flow cross section and reduced flow between the inlet and outlet and an open position with a large flow cross section and free flow between the inlet and outlet. Structure in the valve body applies hydraulic pressure from the inlet or outlet to the valve body to shift same into the throttle position when a pressure differential between the inlet and the outlet exceeds a specified value and into the open position in the absence of a pressure differential between the inlet and the outlet.
Claims10
A valve for a plumbing system, the valve comprising:
- a housing with an inlet and an outlet;
- a valve body movable along an axis in the housing between a throttle position with a decreased flow cross section and reduced flow between the inlet and outlet and an open position with a large flow cross section and free flow between the inlet and outlet, the valve body having a front end face directed in one axial direction and exposed to a pressure of the inlet or the outlet and a rear end face directed axially oppositely and of larger surface than the front face;
- a spring urging the piston into the open position;
- and
- a bypass conduit for applying hydraulic pressure from the one face to the other face of the valve body to shift same into the throttle position when a pressure differential between the inlet and the outlet exceeds a specified value and into the open position in the absence of a pressure differential between the inlet and the outlet, the valve body and housing defining a compensation chamber surrounding the valve body between the faces and a passage connecting the compensation chamber to the outlet.
A valve for a plumbing system, the valve comprising:
- a housing with an inlet and an outlet;
- a valve body movable along an axis in the housing between a throttle position with a decreased flow cross section and reduced flow between the inlet and outlet and an open position with a large flow cross section and free flow between the inlet and outlet, the valve body having a front end face directed in one axial direction and exposed to a pressure of the inlet or the outlet and a rear end face directed axially oppositely and of larger surface than the front face;
- a spring braced between the valve body and the housing and urging the valve body into the open position;
- and
- a bypass conduit in the valve body for applying hydraulic pressure from the one face to the other face of the valve body to shift same into the throttle position when a pressure differential between the inlet and the outlet exceeds a specified value and into the open position in the absence of a pressure differential between the inlet and the outlet.
Dependencies are inferred from the claim text.