Structure: 1 stands for floating ball straight channel -Seal surface and lining material : F stands for fluoroplastic. Connection mode: 4 stands for flange connection. Drive mode: handle operation can be omitted. Q: What is the Q41F ball valve and what do the letters on the Q41F-16C ball valve model number mean? Dervos: According to the 'valve type composing method', we can disassemble and analyze the Q41F-16C ball valve letter by letter. We sincerely wish you a happy holiday season and a best new year. In the end of this article, Dervos is honored to spend another year with our customers and friends. And unarguably the best play went to West Lin who led his team to runner-up when the situation was not optimistic for him. Though every team was brilliant no matter the result. Because infrequently we took it so seriously that everyone practiced and performed hard, longing for the laurel of the team.

That was a funny and stressful afternoon, you have to say. And what was surprising was that we really prepared trophies, a ribbon-cutting and a banner for the opening ceremony. We, divided into 4 teams, had to go through a series of sessions-singles, doubles and mixed doubles, to determine who will have the last laugh. When Christmas holiday met ping-pong, we decided to hold a special, Chinese-featured game this time-a ping-pong competition. Ping pong, as the most popular sports game in China, has become a fad in Dervos for the past few months. The tradition came about because the Chinese word for apple sounds similar to the word for Christmas Eve, and it sands for best wishes. Apart from candies, there was also an apple for everyone, which is an unusual popular tradition on Christmas Eve in China. In the morning of Christmas, our secretary prepared a bag full of candies for every one of us. At the intersection between two years, Dervos of course will have celebrating activities to mark the important moment. It comes to Christmas again where 2021 is about to arrive its destination.

Swing check valve as per bs 1868