Why is such a new valve still tightened with an F wrench?
Thread Content
Some very new valves, which are not large, cannot be turned by hand. In chemical plants, valves of all sizes are turned using F wrenches. Could this have an impact on the valve’s sealing performance and lifespan? Is it due to poor quality in valve production? Are foreign valves also turned using F wrenches?
New valves with a smaller diameter cannot be turned by hand; this is due not only to the manufacturing precision of the valve itself but also to the operating conditions, such as pressure and the type of medium used. However, the quality of the valves has the greatest impact; in the end, it’s simply a matter of poor quality. I watched a video of a foreign refinery where all the valves, large and small, were turned by hand; there weren’t any F-ratchets to be seen at all.
Operating most valves manually is actually quite difficult, as the vast majority of companies in China use valves equipped with differential gearboxes very rarely; therefore, using an F wrench makes the operation easier. When purchasing manual valves, differential gearboxes are not included in order to save costs, as this component acts as a type of assist mechanism. Not all foreign companies use differential gearboxes; some use F wrenches as well, though this is less common. Many companies in our country still fall far short when it comes to showing care for their workers.
That’s excellent; it is closely related to the machining precision of the valve, especially the smoothness of the valve stem. The type and structure of the packing are also very important.
To get in shape, go and turn on and off a hundred valves every day. :lol
Apart from needle valves, I’ve never seen any that don’t require a wrench to operate
Let him come to China Ning – if the ox doesn’t die, then he won’t either!
It’s still a problem with the technology and quality of the valves. Domestic valve manufacturers have a lot of room for improvement.
Which valve do we need to distinguish? Most valves in China do not come with differential gearboxes, so they are difficult to operate; the difficulty increases even more if proper maintenance and lubrication are not carried out