Valve Lockout supplier introduces you: the defects and solutions of valve latching:
1. The valve is a control system in the fluid mechanics transportation system software, which has the functions of closing, adjusting, separating, preventing backflow, pressure regulator, separating or overflowing pressure relief.
2. Valves used in fluid dynamics automatic control systems range from very simple shut-off valves to extremely complicated process control systems. There are many types of valves with different specifications and models. Valves can be used to manipulate the total flow of gases, water, steam, various corrosive substances, mortars, oils, shape memory alloys, radioactive material substances, and other types of fluid mechanics.
Valves are also divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, dual-phase steel valves, plastic valves, non-standard customized valve raw materials, etc.
Valve lockouts that contain locks on water pipes, heating networks or natural gas pipelines are commonly used. Although the construction of lock valves is different, most valves should be locked with a valve and opened with a key. Although the relativeness of this method can be trusted, when many valve locks are installed and the key is stored by professional staff, because the key applied to each valve cannot be used universally, it is standardized for management. inconvenient.
Therefore, everyone has made various improvements. For example, a national invention patent document discloses a valve lock including an oil circuit board, a valve core and a valve seat set on the valve body, and an unlocking tool used to open and close the oil circuit board and separate it from the oil circuit board. A lock post is set up and down on the oil circuit board where the valve seat is widened. The valve seat passes over the lock post, the toe of the valve seat extends out of the lock post, and the inner end is connected with the valve core. A magnetic locking device is provided under the middle of the cover and the lock post to limit the relative rotation of the two. The top management center of the valve seat is punched with a non-circular keyhole. The unlocking tool is marked with an opening body consistent with the cross section of the keyhole. The unlocking tool is equipped with a permanent magnet that can be operated with a magnetic locking device. The valve seat and lock The cover is one.
Using the basic principle that permanent magnets conflict with each other on the same level surface, all lock control valves can be opened according to an unlocking tool, and the adaptability is strong; it is not known that universal valve lockout with this kind of structure can only be used for The seat valve is limited to a 90-degree gate valve and has a small application range.