Tour & Andersson Ab

Imi Hydronic Engineering International Sa

Flow Design, Inc.

Ta Hydronics Ab

Leif Marstorp

Björn Holmgren

Leif Glansk

John M Trantham

Andreas Jonsson

The invention relates to a valve handwheel, comprising a first handwheel part comprising a first position-indicating window, a second handwheel part comprising a second position-indicating window, and a geometrical centre axis extending through the first and second handwheel parts. The first handwheel part is rotatably connected to the second handwheel part. When a user turns the first handwheel part around said geometrical centre axis, the first position-indicating window rotates with the first handwheel part while the second position-indicating window remains stationary with the second handwheel part. The invention also relates to a valve arrangement comprising such a valve handwheel.

Valve handwheel and a valve arrangement comprising such a valve handwheel

A valve arrangement including: a valve inlet, a valve outlet arranged downstream of the valve inlet, a first chamber arranged directly downstream of the inlet, and a second chamber arranged between the first chamber and the valve outlet. The valve arrangement further includes a measuring nipple comprising a measuring channel for receiving a measuring device, and a closing arrangement having open positions and a closed position, wherein the closing arrangement in its closed position is configured to prevent fluid communication between the first chamber and the second chamber via the closing arrangement, and wherein the closing arrangement in its open positions is configured to allow for fluid communication between the first chamber and the second chamber via the closing arrangement.

Valve arrangement

The description relates to a device for the regulation of the amount of a medium in a heating or cooling system, comprising a combined valve, which in one and the same valve housing includes one part for pressure difference regulation () and one part for flow limitation (), the flow being limited in a stepless, adjustable way, i.e. the device obtaining an adjustable Kvs-value. Also, the chosen Kvs-value can be limited by a plunger, which always can operate with its complete stroke length.

Apparatus for regulating flow of a medium in a heating and cooling system

According to one embodiment of the invention, a system for regulating a temperature of a fluid through a conduit comprises a conduit, a moveable obstruction, an actuator, and a pressure generator. The conduit has an inlet, an outlet, and an opening between the inlet and the outlet. The inlet is operable to receive fluid into the conduit and the outlet is operable to dispense of fluid out of the conduit. The moveable obstruction is operable to at least partially cover the opening and thereby resist flow of fluid through the opening. The actuator has a chamber with a heat sensitive substance. The heat sensitive substance is operable to change a characteristic upon receipt of thermal energy from fluid traveling through the conduit. The actuator is additionally operable to move the obstruction upon the change in characteristic of the heat sensitive substance. The pressure generator is operable to apply pressure to the chamber to change a property of the heat sensitive substance. The change in property of the heat sensitive substance changes the movement of the obstruction by the actuator.

System and method for regulating heat transfer on a fluid by regulating the flow of the fluid

Multifunctional valve

A combined control and regulating valve (1) having a housing (2) with an inlet (3) and an outlet (4) as well as a partition (5) between said inlet and outlet and having a seat (6) designed for an interaction with a main valve body (7), which is adjustable from outside. To said inlet and said outlet are connected a measuring nipple each (50 and 74, respectively) via a bore (30, 31 and 40, 41 respectively) for the measurement and the control of temperature and/or pressure. One of the measuring nipples is designed as a multiple function nipple (50) having a cut-off-valve permitting tapping and filling of the medium, which is to be controlled/regulated. In order to enhance reliability in operation, to provide even more precise and reliable measuring results, to reduce the risk of clogging of the cavities leading to the measuring nipples, to reduce costs for manufacturing and/or fitting, to provide preconditions for various conditions of operation and for partial changes as well as for being able to affect other valve properties, like sealing properties and use of differently designed or dimensioned valve bodies, at least one bore (30, 31) is extended axially to communicate with a so extended portion (110) with a zone of the medium channel (73) downstream of said seat (6) via an area immediately above said valve body (7) or around said seat (6) by means of a casing provided with a groove.

Growing community of inventors

Ljung, Sweden

Leif Marstorp