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How to choose valve plasma welding equipment? Background of valve overlay welding Scratches, erosion, and corrosion can all damage the valve sealing surface. The composition and metal structure of sealing materials, surface treatment process, hardness and hardness difference, specific pressure and conformity, and many other factors can all affect the quality of valve sealing surfaces. Each type of...
At present, the commonly used hardening processes for the surface of metal hard sealed ball valves mainly include the following: (1) Surface welding (or spray welding) of hard alloy on the sphere can achieve a hardness of over 40HRC. The process of surface welding of hard alloy on the sphere is complex, with low production efficiency, and large area welding can easily cause deformation of the part...
Maintaining the worm gear ball valve can extend its service life and ensure its normal operation. The following is the correct maintenance method for worm gear ball valves: 1、 Regular inspections: Regularly inspect the appearance and working condition of the ball valve, and promptly handle any damage or abnormal situations. Meanwhile, check if the fastening bolts of the valve are loose and if ther...
Principles for selecting globe valves A globe valve refers to a valve in which the closing element (disc) moves along the centerline of the valve seat. According to the movement of the valve disc, the change in the valve seat opening is directly proportional to the valve disc stroke. Due to the relatively short opening or closing stroke of the valve stem and the highly reliable cut-off function, a...
In pipeline systems, globe valves and gate valves are two common types of valves. They have some differences in structure, flow direction, sealing surface, opening and closing components, and flow direction. This article will provide a detailed introduction to the differences and advantages and disadvantages of globe valves and gate valves, helping you better understand the differences and applica...
The correct selection of valve accessories is of great significance for the reliable and stable operation of pneumatic valves. The control loop of the valve is composed of each accessory. Improper selection or failure of valve accessories can lead to abnormal or refusal of valve operation, posing a huge safety hazard to the process. The compressed air output from the air compressor contains a larg...
(1) The installation position of the regulating valve should meet the requirements of the process flow design, and should be close to the primary indicating instrument related to it, so that the primary instrument can be observed when manually operating the bypass valve; (2) The regulating valve should be arranged on the ground or platform and easy to operate and maintain; (3) The regulating valve...
Metal materials require not only sufficient strength and plasticity, but also sufficient toughness during use. Toughness is the ability of a metal to absorb deformation energy before fracture. The toughness of metals usually decreases with increasing loading speed, decreasing temperature, and increasing stress concentration. Toughness is a mechanical performance indicator that measures the sensiti...
Drain, block steam, and exhaust air, therefore, in steam systems, drain valves are very important as they can maximize the utilization of heat energy and are the most important link between steam and condensate systems. 1. The essence of steam is water, which is a gaseous water containing a lot of heat. In the production process of using steam, when steam passes through heat exchange equipment, th...
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