Abstract: The invention relates to a sequentially controlled water mixer comprising a valve housing (1) with a cold water inlet connection (2) and a hot water inlet connection (3), and a common outlet (4), said casing defining a mixing chamber (5) between the inlets and outlet with a regulating chamber (6) located on the inlet side for housing an adjustable regulating switching valve (7) of substantially rotationally-symmetrical shape and with regulating apertures (8,9), said valve being adjustable to seal-off the inlet connections (2,3), or to control flow through the connections via said apertures (8,9). According to the invention the said inlet connections define recessed holes of larger dimension than respective hot and cold water pipes to be used therewith, and each hole accommodates a compression spring (27) and a seal (28) loaded by the spring to rest in contact with said switching valve (7) via a sealing surface which follows the contour of said switching valve.

Abstract: Thermostatic sensor for controlling radiator valves either directly or by remote control, comprising a cup-like metallic vessel (1) with a compressible plastic bellows (3) and a means (6) for effecting control movements in response to expansion or contraction of the bellows. The bellows is fabricated by blow-molding from a plastic preferably, an acetal plastic. The space between the vessel and the outside of the bellows is hermetically enclosed and filled with a wax medium (2) with high coefficient of thermal expansion. A sensor of this type is produced in one way by inserting wax in freely-fluid condition into the vessel (1), after which the bellows in compressed or sucked-together condition, preferably having expelled air from between the bellows walls thereof, is dipped down into the fluid medium and is there allowed to expand again, after which the vessel is closed by means of a washer or the like.

Abstract: A flow regulator for controlling the flow of fluid, particularly water, to compensate for changes in pressure. The regulator comprises a fitting having an elastically-deformable membrane providing flow passages through the fitting. Pressure variations deform the membrane to modify the flow area of said passages to automatically compensate for the changes in pressure and thereby reduce or eliminate pressure waves arising in the pipe. The membrane comprises a disc-like base, the downstream surface of which is provided with spacer means leaving a star-like pattern of radial passages for medium flow having their outer ends open upstream for admission of fluid to said passages, the size of which is to be reduced by elastic deformation of said base and said spacer means in response to changes in the pressure in the flow.