Abstract

A control valve (1) for regulating a water flow to or from a device in a HVAC system, having a valve body (2), a shaft (15,25) rotatable about a valve axis X, a first ceramic plate (16,26) and a second ceramic plate (17,27) mounted about the shaft (15,15′,15″), the first ceramic plate (16,26) being stationary, while the second ceramic plate (17,27) is coupled to the shaft (15,15′,15″) to rotate with the shaft (15,15′,15″), the first ceramic plate (16,26) having first- and second through-going openings (31,32,41,42), the second ceramic plate (17,27) having one through-going opening or recess (33,43), first-, second- and third, ports (11,21,12,22,13,23), wherein the second ceramic plate (17,27) is rotatable: to a first range of angular positions in which the first port (11, 21) is in fluid communication with the third port (13, 23), and to a second, different range of angular positions in which the second port (12, 22) is in fluid communication with the third port (13, 23).

IPC Classes  ?

• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• F16K 25/00 - Details relating to contact between valve members and seats

Abstract

An adjustable differential pressure control valve has a first housing part with one or more fluid entry openings and one or more fluid exit openings. The valve is provided with a movable throttle member configured for regulating the through flow area of the exit openings in response to a difference in pressure across the throttle member, and a spring arrangement configured for providing a spring force acting on the throttle member in a direction that increases the through flow area of the exit openings. The spring arrangement comprises at least a first and a second spring, and the spring arrangement is adjustable to operate in a low pressure mode with the spring force acting on the throttle member being provided by the first spring only, and to operate in a high pressure mode with the spring force acting on the throttle member being provided by at least both the first and second springs.

IPC Classes  ?

• F16K 31/38 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
• G05D 16/16 - Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid

Abstract

A control valve for controlling liquid flow in a heating and/or cooling installation under command from an actuator within a range defined by a manually preset maximum. The control valve includes differential pressure regulating facilities and flow area regulating facilities. The control valve is provided with means for manually presetting a maximum flow through area and with means for automatically adjusting the flow area through area within the preset maximum.

IPC Classes  ?

• F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
• F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
• F16K 3/32 - Means for additional adjustment of the rate of flow
• F24D 19/10 - Arrangement or mounting of control or safety devices
• G05D 7/01 - Control of flow without auxiliary power

Abstract

A control valve for controlling liquid flow in a heating and/or cooling installation. The control valve includes differential pressure regulating facilities and flow area regulating facilities. The control valve is provided with means for manually presetting a maximum flow through area and with means for automatically adjusting the flow through area within the preset maximum.

IPC Classes  ?

• F16K 39/02 - Devices for relieving the pressure on the sealing faces for lift valves
• G05D 7/01 - Control of flow without auxiliary power

Abstract

A valve with a valve housing for controlling the liquid flow in a plant for central heating is provided. The valve includes an insert part with valve parts for controlling a liquid flow through the valve: a first part and a second part being mutually rotatable. The first and the second parts are provided with complementary through-flow openings that combine to define a common opening area and are configured such that, upon mutual rotation of those valve parts, a larger or a smaller total opening area is provided. The valve includes a closure part which is disposed such that, upon axial displacement, the closure part is capable of completely or partially closing off the total opening area through the through-flow openings.

IPC Classes  ?

• F16K 5/04 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfacesPackings therefor
• F16K 5/10 - Means for additional adjustment of the rate of flow
• F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
• F16K 3/32 - Means for additional adjustment of the rate of flow

Goods & Services

Valves of metal, other than parts of machines; water-pipe valves of metal; tubes, hoses, pipes and valves, all of metal; parts for the afore-mentioned goods provided therewith Valves being machine parts, namely, electric valves, clack valves, valves for machines, actuators for valves, valves for pumps, level controlling valves, pneumatic valves, valves operated automatically by changes in physical conditions, temperature control valves, pressure control valves, thermostatic control valves for machines, valves operated by changes in pressure, mechanical valves for regulating fluid flow; parts for the afore-mentioned goods provided therewith Automatic control valves, namely, thermionic electric valves, thermostatically controlled valves, thermionic valves, electrically controlled valve operators, remote controls for automatically operating valves, electronic controls for automatically operating valves, electric controls for automatically operating valves; parts for the afore-mentioned goods provided therewith Valves for plumbing and heating and cooling installations, namely, temperature limiting valves for central heating radiators, valve apparatus for controlling temperature in central heating radiators, automatic temperature regulators being valves for central heating radiators, thermostatic radiator valves, valves in the nature of plumbing fittings, thermostatic valves being parts of heating installations, temperature sensing apparatus being thermostatic valves for central heating radiators, control devices in the nature of thermostatic valves for heating installations, heat regulating valves being parts of heating installations, temperature control valves being parts of water supply installations, temperature control valves being parts of heating or cooling or ventilation or air conditioning installations, temperature control valves for central heating radiators, temperature sensitive switches in the nature of thermostatic valves for central heating radiators, thermostatic valves being parts of heating installations, namely, heating and ventilating equipment; parts for the afore-mentioned goods provided therewith