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The flange type ball valve is a new type of valve and that is widely used. This ball valve full bore has the following advantages: 1. The fluid resistance is small, and its resistance coefficient is equal to that of the same length pipe. 2. Sealing performance is good, flange type ball valve's seat widely uses plastics, such as PTFE, RPTFE, NYLON, PEEK. and flange type ball valve has been widely used in vacuum systems. 3. It is easy to operate and can open and close quickly. It only needs to rotate 90° from fully open to fully closed, which is convenient for long-distance control. 4. It is easy to maintain, the structure of flanged type ball valve is simple, Sealing ring generally is movable, easy to disassemble and replace

Bihu is a festival celebrated primarily in the Indian state of Assam, which marks the beginning of the Assamese New Year and the arrival of spring. The festival is celebrated three times a year: Rongali or Bohag Bihu in mid-April, Kongali or Kati Bihu in mid-October, and Bhogali or Magh Bihu in mid-January. Rongali Bihu, also known as Bohag Bihu, is the most important of the three Bihu festivals and is celebrated with great enthusiasm and fervor. The festival typically lasts for seven days and involves various traditional rituals, cultural programs, and feasting. During Rongali Bihu, people clean and decorate their homes, wear new clothes, and prepare traditional delicacies such as pitha (rice cakes), laru (sweet balls made of rice flour), and fish curry. They also perform traditional folk dances such as the Bihu dance, which is performed by both men and women in groups. The festival of Bihu 2023 is a time of joy and celebration, and people come together to share their happiness and strengthen their bonds. It is a significant cultural event in Assam and is celebrated by people from all walks of life, irrespective of their caste, religion, or creed. Three Types of Bihu There are three types of Bihu festivals celebrated in the Indian state of Assam: Rongali or Bohag Bihu: It is the most popular and significant of the three Bihu festivals and is celebrated in mid-April. Rongali Bihu marks the onset of the Assamese New Year and the arrival of spring. It is a seven-day festival that is celebrated with great enthusiasm and involves traditional rituals, cultural programs, and feasting. Kongali or Kati Bihu: It is celebrated in mid-October, which is the time when the fields are empty as the paddy is not yet ripe. This festival is more somber and subdued compared to Rongali Bihu and is focused on prayers and rituals to seek blessings for a good harvest. Bhogali or Magh Bihu: It is celebrated in mid-January, which is the time when the harvest is over, and the granaries are