Non-Sparking Tools Explosion proof F wrench

There are various names for explosion-proof F wrenches, some of which are called valve wrenches, cock wrenches, valve hooks, valve F wrenches, etc. They are mainly used to open and close various manual valves, and are generally divided into two types: anti slip F wrenches and ordinary F wrenches. Its usage characteristics: convenient, lightweight, and versatile. The following points must be paid attention to when opening and closing valves with explosion-proof F wrenches in daily operations: A. Before operating explosion-proof F wrenches, appropriate F hook wrenches should be selected according to regulations for valves of different sizes. It is strictly prohibited to use extended levers or long wrenches to pull small size valves, as the design of manual valves is mainly designed by ordinary manpower, Before operation, consideration should be given to the strength of the valve sealing surface and the magnitude of the valve closing force. B. The opening and closing of valves should be smooth with force, and strong or fast force should not be used, especially for the closing and opening of certain high-pressure valves. C. When opening the steam valve, it is also important to pay attention: first, heat it up in advance and drain the condensate before opening. When opening, it is also important to use an F wrench to slowly open it to avoid water hammer. D. After the valve is fully opened, an F wrench should be used to rotate the handwheel slightly to tighten the threads to avoid loosening and damage. E. For rising stem valves, it is necessary to remember the position of the valve stem when opening and closing. It is strictly prohibited to have a full start impact dead center, and attention should be paid to checking whether it is false closed when fully closed. F. When the pipeline is in initial use and there is a lot of dirt or dirt on the normally open valve, the operator should use the valve hook to slowly open the valve, which is also a slight opening. The high-speed flow of the medium should be used to flush away the dirt, then gently close it, and then open it again multiple times. G. When using an explosion-proof F wrench for operation, if excessive effort is found, the cause should be immediately analyzed and reckless behavior should be avoided.