Regulator basics

The regulating valve is one of the important links in the automation of the production process. It is driven by compressed air or electric power, accepts the signal sent by the regulating instrument, changes the pressure, temperature, flow and other control parameters of the medium to make the production placement requirements and realize the production process. Automation.

The regulating valve is divided into self-operated regulating valves according to the driving mode, that is, the automatic adjustment of pressure, temperature and flow is realized by using the energy of the medium to be adjusted, such as self-operated pressure regulating valve, self-operated temperature regulating valve, self-operated differential pressure regulating valve, Self-operated micro pressure regulating valve, etc. Pneumatic control valve powered by compressed air. Electric control valve, powered by electricity. Electrohydraulic regulating valve, manual regulating valve, intelligent regulating valve. According to the upper bonnet form, it is divided into ordinary type, heat-dissipating type, long-neck type and bellows-sealed type. According to the flow characteristics, it is divided into straight lines, equal percentages, parabola, and quick opening. According to the action mode of the spool, it is divided into straight stroke and angular stroke. According to the adjustment form, it is divided into an adjustment type, a cut type, and a cut type. According to the shape of the valve core, it is divided into flat valve core, plunger type valve core, window type valve core, sleeve type valve core, multi-stage type valve core, slewing type valve core, butterfly valve core and spherical valve core. Commonly used are single seat regulating valve, double seat regulating valve, sleeve regulating valve, angle regulating valve, three-way regulating valve and so on.

The development of regulating valves is fast, and new varieties are constantly being developed according to new process requirements, such as intelligent regulating valves and ultra-small flow regulating valves.