Main purpose of the product
1.General valve for urban heat supply: Be suitable for occasions with strict requirements, such as sewage treatment and paper pulp.
2.Special valve for oil chemical engineering: Be suitable for crude oil, heavy oil and other kinds of oil, as well as corrosion resistant, two-phase mixed flow media in chemical industry. Temperature resistance is up to 425 °C
3.Special valve for gas: Be suitable for the transmission control of gas, natural gas and liquefied gas. The product structure is characterized by different chromium alloys, tight sealing and corrosion resistance of the seal ring surfacing valve.
4.Special valve for slurry: Be suitable for industrial pipeline transportation with separation by crystallization or scaling due to chemical reaction in liquid or solid two-phase mixed flow or liquid transportation. The product structure features are different based on different media and temperature required by customers. The ball is surfaced with Cr-Mo and vanadium alloys. The seat is surfaced with Cr-Mo alloy, chromium alloy and stainless steel alloy welding rods, which meet the transportation needs of different slurry.
5.Special valve for pulverized coal and ash: Be suitable for the control of power plant, aluminum oxide, hydraulic slag removal or gas conveying pipeline. The product requires wear-resistant performance. The ball adopts composite ball bimetal with relatively high rigidity and very high wear-resistance. The seat adopts surfacing wear-resistant alloy.
Performance features
1.No leakage: On account of that the valve body adopts in-block cast, the processing of the ball is detected with advanced computer detector, and the processing accuracy is very high. The seat adopts floating structure which can automatically guarantee the best sealing position. Therefore, it is highly adaptable to changes in pressure and temperature without any leakage in the marked pressure and temperature range.
2.Save installation cost and time: Directly buried welded semi-ball valve can be directly buried underground. The length of the valve body and the height of the valve rod can be adjusted based on the construction and design requirements of pipelines. It only needs to build a small shallow well on the ground rather than building a large valve well, which greatly saves the construction cost and engineering time.
3.Flexible operation: Due to the adoption of the eccentric structure, the ball gradually approaches the valve seat during the closing process, and they completely contact at the closed position: when opening, the ball is completely disengaged from the sealing position, there is no friction, and the torque is small.
4.The sealing surface can realize self-cleaning: When the ball leaves the seat, the media can flush away the accumulation on the sealing surface. For the easy-to-crystallize media, the ball can remove the medium crystallization in the closing process to achieve the sealing purpose, avoiding the disadvantage that other valves cannot be opened and closed.
5.Small flow resistance: Due to the adoption of the straight-through structure, the fluid resistance is reduced, energy-efficient. The eccentric structure makes the ball separate from the valve body when opening. The channel is straight without blocking.
6.Long service life: The ball and seat are surfaced with corrosion-resistant and wear-resistant hard alloy. The eccentric structure of the sealing surface enables the spherical surface to automatically compensate for the wear and maintain the sealing of the valve: the valve body material is the same as the pipe material, and the direct welding will not cause uneven stress, nor will it be deformed due to earthquakes and vehicles passing through the ground. Therefore, it has a long service life, up to more than 30 years.
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