The jacket valve has good heat preservation and cold preservation characteristics, and the diameter of the valve is consistent with the diameter of the pipe, and at the same time, the heat loss of the medium in the pipeline can be effectively reduced. It has good thermal insulation properties and can effectively reduce the heat loss of the medium in the pipeline. Insulation valves are widely used in various systems such as petroleum, chemical, metallurgy, and pharmaceuticals, effectively reducing the loss of heat in the pipeline and preventing the appearance of crystals and solidification of the medium. The function of the heat preservation valve is that when the valve passes through the valve at a high or low temperature, the material in the heat preservation valve has a heat insulation effect on the medium, so that the medium does not condense or stick to the inside of the valve body, so that the opening and closing of the valve can operate normally.

Mid-Autumn Festival fell on Sep 13th, 2019 this year. On the previous day Sep 12th, our company held a celebration activity by having moon cake gambling and dinner together. On this day in China, family gets reunion to have dinner, eat moon cake and enjoy the glorious full moon. And people in different districts have different ways to celebrate this festival.  In Xiamen, we have a special custom, moon cake gambling. Money or various daily necessities can be regarded as the prize for those gambling winners. Likewise, we held a moon cake gambling games in Dervos. The prizes are of variety and attracting, including floor mopping robot, mountain bike, electric cooker, humidifier and etc. The day ended with a terrific dinner party. Delicious food, beautiful songs, pictures and Dervos people....

Plug valves are commonly applied in different areas, but how to choose the right type of it?  In this article, we will introduce briefly about it. 1. Lubricated Plug Valves This type of plug valves uses a lubricant injected under pressure between plug face and body seat, in this way, it can reduce friction and seal ports. And they perform well for the fluids including abrasive particles like dirty upstream applications, gas pipeline system with bypass valves. 2. Non-Lubricated Plug Valves Non-lubricated plug valves are equipped by a sleeve for the seat part, which can reduce friction between the plug and body, it is more commonly used in applications that don’t need much maintenance like sulphur, hydrogen fluoride. However, it has limitations on temperature and pressure due to the non-metallic material of sleeve. 3. Eccentric Plug Valves There is only a half plug in eccentric plug valves, when you are needing a higher seating force with minimal friction from open to close position, you could consider eccentric plug valves.

How to maintain the valve to make it better service for us? 1. The valve should be stored in a dry and ventilated room and blocked at both ends of the access. 2. The valve installed and in use should be inspected regularly to ensure its normal operation. 3. Check whether the sealing surface of valve is worn, and repair or replace it according to the situation. 4. Check the valve stem and stem nut. If the packing is outdated, and replacement should be carried out. 5. The sealing performance of the valve shall be tested to ensure its performance. 6. The valve in operation should be in good condition, flange and bracket bolts are complete, threads are not damaged, no loosening phenomenon. 7. If the valve is used in a poor environment, vulnerable to rain, snow, dust, sand and other contaminants, it should be installed for the valve stem protective cover.

Nowadays, we have distributed our products to 5 continents around the world, with 42% in Europe, 23% in Asia, and 20% in America. Keep expanding our market is always our aim. Last week, one of our clients came to visit us before order. It’s really a good beginning before cooperation. We went to Wenzhou office in the morning, introduced our company briefly. After that, we visited the casting factory which we cooperate often to show clients the whole process of controlling casting. Here in the casting factory, we have complete equipments to do the chemical composition analysis, tensile test, impact test, RT, PT, etc. This is to make all castings are of good quality and all raw materials are traceable. In the afternoon, we visit factory. To show clients the products we are manufacturing and the equipments and workers we have. Clients are happy about this trip; hope it is the very good beginning between you and me.

Floating ball valve The sphere of the ball valve is floating, under the action of medium pressure, the sphere can produce a certain displacement and press on the seal surface at the exit end, ensuring that the outlet seal. The structure of the floating ball valve is simple and sealed well, but the load of the ball under the working medium is passed to the outlet seal ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the sphere medium, and the sphere may be offset when it is affected by higher pressure. This structure is commonly used for medium and low pressure ball valves. Trunnion Ball Valve The sphere of the ball valve is fixed and does not move after pressure. Fixed ball valves are equipped with floating seat, subject to media pressure and the seat is generated to move, so that the seal ring is pressed on the sphere to ensure the seal. Bearings are usually installed on the upper and lower shafts with spheres. Small torque for operation leads to its suitability for high pressure and large size valves. Elastic Ball Valve The sphere of the ball valve is elastic. The sphere and seat seal ring are made of metal material. This valve is suitable for high-temperature and high-pressure media. An elastic sphere is an elastic slot at the lower end of the wall inside the sphere, which obtains elasticity. When closing the channel, use the wedge head of the stem to make the sphere rise and hold to tighten to seal. Release the wedge head before turning the sphere, and the sphere reverts to its original shape, allowing for a small gap between the sphere and the seat, reducing friction and operating torque of the sealing surface. V Type Ball Valve The V-shaped regulating ball valve has a shear effect on the seat because the core has a V-shaped structure. Therefore, it is suitable for paper, chemical, metallurgy and other industrial enterprises containing fiber or tiny solid particles in the suspension fluid medium of the relevant process parameters control. V-ball valve belongs to the fixed ball valve and has a single seat. Its adjustment performance is the best ball valve. Plus, its flow characteristics are equal percentage, adjustable ratio of up to 100:1. Three-way Ball Valve The tee ball valves are T-type and L-type. The T-type can connect three orthogonal pipes to each other and cut off the third channel, which acts as a diversion and convection. The L-type can only connect two orthogonal pipes to each other, and cannot maintain the interconnection of the third pipe at the same time, only for distribution.