Gongyi Huitong Expansion Joint Professional Manufacturing Factory

Single flange loose sleeve limit expansion joint
Single flange loose sleeve limit expansion joint is suitable for connecting to the flange on one side and welding to the pipe on the other side. During installation, adjust both ends of the product to the pipe or flange. According to the installation length, tighten the gland bolts evenly diagonally, and then adjust the limit nut, so that the pipeline can freely expand and contract within the expansion range, lock the expansion amount, and ensure the safe operation of the pipeline.
The connection dimensions and sealing surfaces of the flange used in the single flange loose sleeve limit expansion joint shall comply with the national standard marine connection dimensions and sealing surface. If flanges with other connection sizes are required, please indicate this when ordering.
The loose sleeve expansion joint is a device for connecting pipes with a loose sleeve, which is composed of a body, a sealing ring and a compression member. It is mainly used for compensation joints that absorb axial displacement but cannot withstand pressure thrust.
The loose tube limit expansion joint is composed of loose tube expansion joints, limit short tubes and other components. It can prevent the leakage or damage of the compensation joint due to excessive displacement of the pipeline. It is mainly used for loose-tube connections of pipelines that absorb axial displacement and bear pressure thrust within the allowable displacement range.
The use of non-metallic expansion joints in smoke ducts
Henan Huitong is a professional manufacturing company specializing in the production of expansion joints. Our company has been engaged in the production and research of expansion joints for more than 25 years. Due to different working conditions of smoke and air ducts, it is impossible to fix which type of expansion joint to install. So which type of expansion joint is most suitable for use in smoke and air ducts?
The most commonly used expansion joints in smoke and air ducts are made of non-metallic materials, because non-metallic expansion joints can compensate for the axial and transverse angular displacement of the medium in the pipe due to temperature changes, and have no thrust and simplified supports. Design, corrosion resistance, high temperature resistance, noise reduction and shock absorption, etc., and the price is much lower than that of metal expansion joints. Moreover, since the non-metallic expansion joint is composed of one layer of silicone cloth, two layers of alkali-free glass fiber cloth and one layer of PTFE cloth, it is not necessary to replace the entire non-metallic expansion joint when the covering cloth is damaged after environmental corrosion and reaching the end of its service life. Metal expansion joints can work normally by directly removing the corroded covering cloth and reinstalling new ones. From this point, it can also be seen that non-metallic smoke pipes are used