General parameters of pneumatic valves

by:Lianke Valve     2022-08-08
With the development of the modern manufacturing industry, more and more enterprises have realized the integration of intelligence. For example, pneumatic and electric series are remotely controlled by valve actuators or valve devices, which reduce the burden of human resources and are favored by the majority of users. Here is a brief description of the requirements and conditions for the use of pneumatic valve devices, hoping to help. First of all, we need to know why the near-pneumatic valve ball valve is so popular, because the price of the pneumatic and electric valve is generally higher than that of the pneumatic actuator, but the pneumatic device is limited by the air source conditions, so if the air source conditions allow, it is still Very recommendable. Secondly, the pneumatic valve should be understood clearly. It is a valve actuated by means of compressed air. When purchasing pneumatic valves, it is only necessary to specify the specifications, types, and working pressures to meet the purchasing requirements. flow. It is not perfect in the current market economy environment. Because the pneumatic valve manufacturers have carried out different innovations under the concept of unified design of pneumatic valves for product competition, they have formed their own corporate standards and product personality. Therefore, it is very necessary to put forward technical requirements in detail when purchasing pneumatic valves, and coordinate with manufacturers to reach a consensus as an accessory of the pneumatic valve purchase contract. This type of valve should generally be installed horizontally in the pipeline. Then there are the general requirements for valves 1. The specifications and categories of pneumatic valves produced should meet the requirements of pipeline design documents. 2. The model of the pneumatic valve should be marked with the requirements of the national standard number. If it is an enterprise standard, the relevant description of the model should be indicated. 3. The working pressure of the pneumatic valve is required to be greater than or equal to the working pressure of the pipeline. On the premise of not affecting the price, the working pressure that the valve can withstand should be greater than the actual working pressure of the pipeline; any side of the pneumatic valve should be able to withstand 1.1 times when the valve is closed. Valve working pressure value without leakage; when the valve is open, the valve body should be able to withstand twice the valve working pressure requirement. 4. For the manufacturing standard of pneumatic valve, the national standard number should be stated. If it is an enterprise standard, the enterprise document should be attached to the purchase contract. Installation and use (1) Before the pneumatic valve is installed and used, the valve must be inspected and tested for switch operation. It can only be installed and used under normal operating conditions. (2) The installation of the pneumatic valve should make the valve concentric with the pipeline flange as much as possible, and support it. The ball valve cannot be subjected to other external forces, so as to avoid damage to the middle seal of the valve and deformation of the valve. The valve switch is ineffective and the valve is damaged and cannot be used. (3) To ensure that the power source provided by the balloon valve and pneumatic components must be clean and free from oil and water as much as possible. Cleanliness should be less than 0.4 microns. (4) Before connecting to the air source, the air supply pipeline, air source interface and switch and other devices must be cleaned to prevent malfunctions caused by the unclean pipeline and the dirt and sediment rushing into the pneumatic actuator unit. (5) For the connection of pneumatic actuators, solenoid valves, positioners, filters, pressure reducing valves, etc., copper pipes or nylon pipes can be used. In order to prevent dust and reduce noise, mufflers or mufflers should be installed at the exhaust port. flow valve. (6) After installation, the pneumatic valve should be tested, the pneumatic actuator should be pressurized to the rated value, the pressure is 0.4 ~ 0.7mpa, the switching test of the pneumatic ball valve should be carried out, and the opening and closing of the valve should be observed. It should rotate flexibly without jamming. If the switch is blocked, the air pressure can be increased, and the valve can be adjusted to the flexible switch by repeating the switch. (7) When installing and debugging the switch-type pneumatic valve, first use the manual device (manual button on the solenoid valve) to debug, and then debug after the operation is normal. (8) The pneumatic valve should be regularly maintained at the rotating part of the valve stem, and oil (oil) should be refueled once every three months. Regularly discharge water and sewage to the pneumatic actuating unit and the air filter used in conjunction with it. Under normal circumstances, check every six months and overhaul every year
These valve application types of industrial valves are meant to serve as a guide for business owners on how to both identify potential opportunities for transformative innovation and how to adapt to the constantly changing technologies of today.
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