Project Name: ECOFUEL INNOVATION PROJECT Year：2017 Introduction: In 2017, we provided a major number ofvalves from regular gate valves to safety relief valves to an environmental project lead byECOFUEL, an emerging Canadian player inclean technology. It is atentative project for sustainable diesel production from solid waste.Dervos is proud to bea part of this fuel innovation actionand offers 136 sets of our reliable and outstanding valves for it. SEGMENT BALL CONTROL VALVE It’s also called V type ball valve, whichhasthebest regulating performance in ball valves. Plus cut-down function between the V-shaped slit and the metal seat, this kind of ball valve is particularly suitable for medium withfibers, solid particles and slurry. KNIFE GATE VALVES As the mediumcontains wooden debris and slurry, knife gate valves are suggestedin this condition for its good cut-down performance. THREE-WAY SPLIT FLOW VALVE Remotely controlled by electric actuators, this valvecan split the flow into twostreams andachieve precise controloverprocess parameters for fluid. SAFETY VALVE Conformed to API520 and API526, thesesafety valves arecustomized according toon-siteworking pressure, temperature and flow capacity for over-pressure protection.

Just like there are different advantages between lug or wafer type butterfly valves, 2 piece type and 3 piece type ball valves also have their edges. What below are some of the important factors when considering choices between the two types.   1. Design 2. End connections 3. Installation 4. Performance 5. Ease of maintenance   Design As their names imply, a 2-piece ball valve has two distinct pieces – one piece is an end connection and the body and a second piece, which has the other end connection as well as the valve trim.   A 3-piece ball valve has three body pieces – 2 ends and a center section that holds the valve trim. The three parts are bolted together around the three sections.   End Connections Because of their designs, two-piece ball valves are limited in the type of end connections they can make. They are usually limited to threaded end connections.   Three-piece ball valves have a swing design that allows for welded end connections, so socket and butt weld ends are often feasible.   Installation Its simple design makes 2-pc ball valve one of the most common types in many industries. Due to this simple design, the 2-pc ball valve is a lightweight solution for manual and automatic fluid or gas control.   If the end connection is threaded, the installation of the 3-pc type is also very straightforward. When it is necessary to weld the end, in order to prevent the valve seat and the sealing ring from being heat damage, the device have to be partially disassembled during the installation.   Performance The simplistic design of 2-pc valve allows itself, generally, a better Cv value. The seats, seals, applications and other parts in performance are more decisive than the design type.   Ease of Maintenance The oscillating design of the 3-piece valve allows the body section to remain in place while the valve section swings up and out of the line for cleaning or servicing. This feature makes the 3-pc stand out from the 2-pc, whose design does not allow for any maintenance. Applications where the media is thick or viscous, or where lines must be cleaned between batches, are almost always the domain of the 3-pc valve.   summary Based on the above information, the consideration of 2-pc or 3-pc must include various factors, including the length of the production line through its medium, flow, weight, and maintenance plan. The good news is that our technical sales staff will be more than happy to discuss these factors so that you can make the right decision.   Xiamen Dervos has served countless industrial, commercial, and municipal clients for over 10 years. We have supplied thousands of common valves, customized products, electric and pneumatic actuators and so on to customers worldwide.   If you would like to know more about our valves, services, or other products, any message or inquiries are welcomed.

A Chinese saying goes that knowledge begins with practice.It is an essential principle that we must combine theory with practice. And, then, as we planned in the mid-year meeting this year, the first group of our sales have arrived factory to launch a 3-week long field study there. This trip is aimed at promoting Dervos sales' acquaintance of valves with gate valve, globe valve and check valve taking the main course of it. And essentially, what's more important is that we hope our sales could be professional and more professional. In this way can they better help you solve your problem and finish your purchase. Our factory prepared well for this factory study. From Inventory management, production line, technique learning to packing and shipping, a wealth of lessons awaits for our sales. During almost a month of field study, in addition to grasping the whole producing process, assembling and packing, our sales spent a great amount of time in the storehouse in where they could learn the properties, differences, uses of each component and the reasons for the selection of different valve accessories. This is just the first group, the rest of our sales, no matter experienced or unskilled, will attend the trip in the next batch. Dervos is well aware of the hard time the whole industry even the whole world is going through. What we can try our best is to trained ourselves harder and provide more thoughtful solutions.

Generally speaking, a plug valve and a ball valve may absolve the same function (fluid shut-off). The main differences are:   Plug valves are more economical than ball valves, generally, due to their simpler design   Plug valves are less prone to contamination by debris, and accumulation of dirt in the interstitial spaces, compared to ball valves (an issue that is frequently faced by ball valves, due to the spaces existing between the sphere and the body of the valve)   Ball valves require more maintenance than plug valves, especially after planned or unplanned plant shut-downs   Plug valves have a full port design, without pressure drops, ball valves may be reduced or full port (a full port ball valve would be heavier and bulkier than a plug valve of the same size)   In general, plug valves are good alternatives to ball valves, even if ball valves are still considered industry standard for shut-off operations at least in the oil & gas industry.

This year the holiday for family reunions, Mid-Autumn Festival, and for the country's founding, National Day, coincide.   As the two special festivals both fall on October 1 this year, Chinese cities, certainly including Xiamen where Dervos lays its root in, are festooned with flowers and lanterns and holding colorful activities to celebrate the joyful occasion.     And here in Xiamen, we have a traditional activity called Bo Bing, or "gambling for cakes", to celebrate the Mid-Autumn Festival. The game requires six dice and a wide mouthed bowl. Players throw the dice in turn and wins a specific prize depending on the dice combination. We divided into three groups. Screams and cheers rose up and fell down as every time dice being tossed. Because the quantity of gifts is limited, whoever tosses the specific number earlier, gets more presents till all are given out.   After the exciting game, we headed towards a beautiful and cozy coastal hotel for the rest of this happy time. In there, the games, the songs and the palatable food all added together to make a memorable occasion.  At the stretching beach and on the pleasant moment, we flew balloons that carry our best wishes and sang our company song --“we are a loving family”. Happiness and group cohesion drew a perfect period of this wonderful night.

The V-ball valves or V-port ball valves are similar to traditional ball in which there is a V-notch on a ball-shaped disc to control flow by a rotating quarter-turn motion. The “V-port" is a particular design that bring about precise flow and the ability to regulate and control flow by V balls of  different degrees. These special valves are used in a wide range of chemical applications, including the most challenging services with many advantages.   Flow Modulating The accuracy of V-ball valves provides equal percentage flow characteristics. As the ball rotates, desired flow rates can be achieved by positioning the ball anywhere between 0° and 90°.   Bubble tight shutoff V-ball valves have the ability to close tightly. Therefore, no other shutoff valves is required when using a V-ball valve on a globe valve.   Lower pressure drop V-ball valves also have a higher coefficient of flow (Cv) than the same size globe valve, which directs the flow and uses a plug to control the flow through the valve. This means that the flow rate achieved by one shut-off valve can be achieved with a smaller V-ball size.   Higher shutoff pressure. A 90°rotation of the ball allows the V-ball to close at a higher operating pressure. This therefore allows the use of lower torque actuators, resulting in cost savings and increased efficiency for the end user.