The development of pneumatic film regulating valve has a history of 80 years since the beginning of the 20th century. It has produced ten major categories of regulatory valve products, self -intensive valves and positioners.The pneumatic film regulating valve is referred to as the regulating valve. The regulating valve consists of two parts: electric execution agency or pneumatic execution mechanism and regulating valve.The regulating valve is usually divided into two types: direct single -seat regulatory valve and the direct two -seater regulating valve. The latter has the characteristics of large circulation capacity, small unbalanced handling, and stable operation.There are few occasions.
Performing film regulating valve price
Pneumatic film regulating valve manufacturer
Zhejiang Crown Industrial Co., Ltd.: Crown Industry is the leading brand of the production valve forging industry. The Crown Industry established in 1984 is now 31 years old. It is the heyday of young and strong. The company has been committed to product development and production.Professional production valves, pipes, water meters and other control elements such as sales and services are comprehensive enterprises.The company has strong strength, advanced technology, and excellent equipment.There is also a complete service system, and the quality of the products produced belongs to the quality of the champion.The companys service purpose is "the most talkable person may not do the best, and the person who can serve the best must do the best."Shanghai Chuanhu Valve Co., Ltd.: Chuanhu Co., Ltd. is a company specializing in the production of self -control valves and other general -purpose valves. In many years of development, it has accumulated a lot of experience and created a control valve series with its own companys characteristics. The companyThe pneumatic film regulating valve produced has been affirmed in the industry and the love of users, and sales have always occupied the leading position in the market.The companys philosophy is "technological innovation, energy saving and environmental protection", which is more in line with the theme advocated by todays society.
Pneumatic film regulating valve selection
1. In terms of usage requirements, the pneumatic film regulating valve is divided into three structures: direct single -seat regulating valve, double -seat regulating valve and high -pressure angle regulating valve. Each structure meets different use requirements.Strive of the single -seat regulating valve: It is suitable for occasions with low pressure differences in the tube diameter and the front and rear pressure differences in the regulating valve. Because the fluid in the valve is unbalanced on the thrust of the direct single -seat regulating valve core, the leakage is required.Double -seater regulating valve: Like the direct single -seat valve, the two -seater regulating valve is not suitable for occasions with high pressure differences in front and back of the valve.At the same time, because the two valve ports of the double -handed valve are not easy to close at the same time, in order to prevent the occurrence of leakage accidents, it is not suitable for high -temperature and high pressure environments.In addition, if the fluid in the valve contains suspended particles, fibers, or viscosity, it will cause severe erosion damage to the valve body. Therefore, when the fluid has the above characteristics, the double -seat regulating valve cannot be used.
Principle of pneumatic film regulating valve
When the gas source signal enters the air chamber B, the force acts on the component 2, compares with the force of spring 1.In normal state, the thrust of the film comparative part is greater than the given spring force. At this time, the tablet valve core 3 is lifted, the nozzle 4 is opened, and the channel is in normal working state.When the gas source fails and the gas is broken, the pressure of the gas chamber B decreases. Under the action of spring force, the tablet valve core 3 covers the nozzle and cuts off the channel A and the output port.That is, the gas chamber of the pneumatic mechanism is sealed so that the working position of the regulating valve is kept in the original position, and it plays a role in maintaining the valve position.

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