Self-reliance type regulator on within the medium flows through the valve's own pressure, temperature, as energy drive valve work automatically, do not need the power converter and secondary instrument. Also called self-reliance type control Industrial Valves. Self-reliance type regulator is using valve the output feedback signal ( Pressure, differential pressure, temperature) Through signal to the actuator driven disc change of valve opening, to achieve the purpose of regulating pressure, flow, temperature.

self-reliance type regulator is a new regulator type. Compared with the manual control Industrial Valves, its advantage is able to automatically adjust; Relative to the electric control valve, its advantage is not need external motivation. The application practice proved that the closed water circulation system ( Such as hot water heating system, air conditioning chilled water system) The proper use of the valve, the flow distribution can be easily implemented system; Can realize the dynamic equilibrium of system; Can greatly simplify the system debugging work; Fix the pump working condition, etc.

self-reliance type regulator in the course of everyday use, can appear the problems such as mountains, however, these problems and can lead to performance degradation, self-help type regulator and self-reliance type regulator which how to defend against the card? Self-reliance type regulator to collect CARDS, there are mainly six ways to solve and avoid:

1, the affection washing method: pipeline welding slag, rust, pulp are under the throttle mouth, guiding parts, valve cover balance hole blockage or stuck valve core surface, surface strain and scratch etc. Encounter this situation, it is necessary to remove for cleaning, remove the slag content, such as the sealing surface damage should also grinding; At the same time open the bottom plug to flush out from under the balance hole fall into the residue inside the valve cover, and the pipeline to wash. Before put into operation, let the valve fully open, the medium flows into normal operation again after a period of time.

2, external flushing method: for some easy to precipitate, medium containing solid particles using ordinary valve adjustment, often at the throttle mouth jam, guide, can the cover bottom plug in an external erosion gas and steam. When the regulator blocked or jammed, open an external gas or steam valve, can be completed in under the condition of fixed regulator flush work, make the normal operation of Industrial Valves.

3, pipeline filter installation method: for small diameter regulator, especially ultra-small flow regulating valve, the throttling clearance, small, even a little residue in the medium is blocked, had better install a strainer before the valve in the line, to ensure that the media to go through. Take use of regulating valve locator, locator is not normal work, the pneumatic throttle mouth blockage is the most common fault.

4, increase the throttle clearance method: medium solid particles or washed off in pipe welding slag and rust due to pass the throttle mouth such as jam, jam, such as fault, can convert the throttle gap bigger throttle piece - Throttling area of a window, open the valve core and the sleeve, rather than the circumference of a circle because of the throttling area of concentration distribution, fault can easily be ruled out. If you are single, two-seat valves can change the plunger valve core form to 'V' shape of valve core, or into a sleeve valve, etc.

5, medium washed method USES the scouring of medium energy, wash and take things easy to precipitate, easy to jam, thus improve the function of valve stem. Common methods include: (1) flow into closed type use; (2) adopts streamlined body; (3) puts throttling mouth wash the worst place, using this method to pay attention to improve the resistance to erosion ability of throttling parts.

6, leading to the Angle: the pass-through for S flow, flow complex, upper and lower chamber should dead zone, provides the medium of precipitation. Angle connection, flows through 90 ℃ medium like elbow, washing performance is good, dead zone is small, easy, designed to streamline.

network (Chinese pump valve Regulating valve manufacturers recommended) :http://www。 zgbfw。 com/search/supplysea。 aspx吗? key=%b5%f7%bd%da%b7%a7& Type = 1

keywords: self-reliance type regulator, the solution prevent preventing self-help type control valve, self-reliance type regulator which how to defend against the card
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