Vacuum valve model

The vacuum valve is equipped with a pre-vacuum pipeline valve (called low vacuum valve) on the pre-vacuum pipeline. The high-vacuum valve on the main pump usually cannot be in a vacuum state under the valve cover, and the valve cover is opened under atmospheric pressure. This must be passed Electrical interlocking ensures safety. Foreline valve and pre-vacuum pipeline valve should be considered to be able to open the valve at atmospheric pressure. For vacuum system with steam flow pump as the main pump, the main valve should cover the main pump and foreline valve. Also cover the main pump and the valve cover of the pre-vacuum pipeline to the vacuum chamber.

New technology should be used in the design of vacuum valve vacuum system to achieve automatic control and interlock protection. With the development of vacuum technology, automatic operation is required during the entire pumping process, such as the use of vacuum relay to control the Roots pump at 1333Pa pressure When the water pressure is insufficient or the water is cut off, the power can be cut off immediately and an alarm will be issued. Equipment with strict requirements for complex vacuum systems, technological processes and parameters is used to control the water pressure of the steam flow pump at a certain pressure. Microcomputer program control should be adopted, which is more safe and reliable.

Beipiao Vacuum Equipment Co., Ltd. has a technical team with rich practical experience and specializing in the research and development of vacuum equipment. Over the years, through the continuous exploration and innovation of several generations of Beipiao people, the company can design and manufacture high vacuum oil diffusion pumps. , Oil diffusion jet vacuum pumps, various series of vacuum valves and vacuum units, etc., including more than 20 series of vacuum application equipment, more than 100 varieties of products.

Valve vacuum diaphragm valve, due to its simple structure, small size, light weight, good sealing performance, suitable for pre-pumping and pre-pumping pipelines and non-corrosive gases with a temperature of -25℃～80℃, glass vacuum piston, (also known as Cork ) It is mostly used for the calibration system and glass vacuum system of vacuum measurement. For the same vacuum valve, the valve model should be selected after comparing the structure, performance, parameters, scope of application, leakage rate, sealing material, use method and other comprehensive factors.

High vacuum valve When the vacuum valve is used in the device, the shut-off valve on the bypass pipeline should be opened first to remove the condensate and steam-water mixture in the pipeline to prevent water hammer from damaging the pressure reducing valve when the pressure reducing valve is opened. When there is no abnormal phenomenon, slowly rotate the screw clockwise to adjust the outlet pressure to the required pressure (according to the gauge pressure behind the valve). After adjustment, lock the lock nut, screw on the protective cover, and reduce The pressure valve should be stored in a dry room, and the two ends of the passage must be blocked with blind plates. Stacking storage is prohibited.

Since its transformation in 2000, Beipiao Vacuum Equipment Co., Ltd. has injected new vitality and vitality into the enterprise. It has successively developed large-caliber and special-shaped electric and pneumatic high-vacuum flapper valves. It has also developed rapid development for national defense and scientific research departments. Closed high-temperature water-cooled large flapper valve has become a domestic manufacturer of oversized valves.

Vacuum valve model

After the high-vacuum valve test, the joint and the sealing part of the valve body are deformed at the same time, and the sealing surface of the valve body will produce indentation, which is not conducive to multiple sealing. If the joint and the outer nut are rotated together during the tightening process, the product will be damaged. On the sealing surface of the valve body, foreign objects of the vacuum valve are embedded between the diaphragm and the valve seat, compressing or wearing the diaphragm; prevention and elimination methods: do not forcibly close during operation, and open and close repeatedly up and down several times. After washing away the foreign objects, formally close the valve; Replace it in time after damage.

The type of high vacuum valve medium changes, especially when the accumulation state of the medium is different (for example, from liquid phase to gas phase), the opening pressure often changes. When the working temperature rises, the opening pressure generally decreases, so adjust it at room temperature. When used in high temperature, the set pressure value at room temperature should be slightly higher than the required opening pressure value. The high degree is related to the valve structure and material selection. It should be based on the manufacturer's instructions. Vacuum valve stainless steel joint material Generally 1Cr18Ni9Ti or 0Cr18Ni9, its hardness is close to the valve body.

The products and services of Beipiao Vacuum Equipment Co., Ltd. are spread all over the country and have been well received by users. Our tenet is: "Customer needs are the goal we are constantly pursuing." Honesty, dedication, pioneering, and innovation are the company's spirit. We will provide high-tech products and various forms of services for domestic and foreign users. We look forward to sincere cooperation with colleagues from all walks of life. , Go hand in hand, create brilliant together!