Differential pressure valve assembly

Abstract

The invention relates to a pressure control valve. The pressure control valve comprises: a gate located in a valve chamber between one fluid inlet and one fluid outlet, wherein the gate is movable relative to valve seat defining first opening degree of pressure control valve; and a diaphragm connected with the gate, wherein the membrane deflects when changes in differential pressure on the membrane, and then the position of the gate relative to the pressure-sensitive valve seat is changed. The gate guide inside the valve chamber comprises a plurality of contact parts in contact with the outerwall of the gate and arranged on the circumference of the gate.

Description

technical field [0001] The invention relates to a valve arrangement, such as in particular a heat exchanger valve arrangement, having a pressure control valve comprising a valve element cooperating with a throttle element and controlling a pressure difference. Background technique [0002] In heating systems, the flow rate may be controlled by flow controllers such as valves, where these flow controllers may be pressure independent valves that increase system efficiency. [0003] However, the operation of these valves may be affected by various causes such as debris in the working fluid that has deposited on the closing or valve elements adapted to respond to pressure changes. This will result in reduced efficiency, but also in an unpredictable valve where actual operation does not match expectations and where the unpredictable valve may be limited in its operating range. [0004] The object of the invention is to prevent, by fouling etc., the closure element from being res...

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Problems solved by technology

[0003] However, the operation of these valves can be affected by various causes such as debris in the working fluid that has deposited on the closing or valve elements adapted to respond to pressure changes, etc.

This will result in reduced efficiency but also unpredictable valves where actual operation does not match expectations and where unpredictable valves may be limited in their operating range

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