Product Information of Nanfang pneumatic cage type control valve machine pipelines Transportation
To better learn about control valve, Nan Fang will provide detailed pictures and detailed information in the following section for your reference.Nan Fang has great production capability and excellent technology. We also have comprehensive production and quality inspection equipment. control valve has fine workmanship, high quality, reasonable price, good appearance, and great practicality.
Nan Fang's valve suppliers can meet the different needs of customers.While providing quality products, Nan Fang is dedicated to providing personalized solutions for customers according to their needs and actual situations.
Company Advantages 1. Moreover, we make required changes in cage type control valve in order to match with the latest development of the industry. 2. Following the trend of fashion, our cage type control valve is designed to be of low pressure control valve and steam pressure control valve . 3. cage type control valve is low pressure control valve in the long run due to its properties. 4. Research shows that this product has strong competition in the overseas market.
Company Features 1. Hangzhou Fuyang Nan Fang Valve Industry Co., Ltd is a cage type control valve manufacturer that specializes in producing high quality products. 2. Our strong technology capability accelerates the production of cage type control valve in large output. 3. We use our global scale and focus where we can make the biggest difference: sustainable manufacturing and reducing the environmental footprint of our operations. We are a firm with a strong corporate philosophy. This philosophy enables us to focus on one thing: to manufacture the best products with high quality. Inquire now! We have a clear target. We endeavor to build long-term business partnerships with clients. By providing clients professional and sincere services, we will work hard to create economic value and manufacture high-value products for them.
In the past, the main consideration for control valve packing selection is the operating temperature of packing. When the temperature is lower than 200℃, use PTFE packing; When the temperature is higher than 200℃, the packing is graphite. Now, when selecting the packing, not only to consider the working temperature, but also to consider the affection of process control by the friction of packing, such as hysteresis, sealing quality, service life, and so on.The principle of choosing packing is to reduce the friction and prolong the service life as far as possible under the premise of ensuring the required level of leakage.For the friction of a graphite packing, it is much greater than that of a PTFE packing, so PTFE packing should be used as long as the temperature permits.Summarize the main points of packing structure design and application:1. Different packing boxes and packing structures are suitable for different applications. The correction selection of the packing box and packing structure, can reduce the friction and prolong the service life under the required sealing performance.2. In the packing structure, the packing layers and length are not the more than better usually packing length is 1.5 times the stem diameter.3. It is very important to improve the surface finish and surface accuracy of the stem and packing box. For PTFE packing, the finish of stem and the packing box is not enough, and it will reduce the sealing performance and cause increasing leakage;4. The design of the packing structure should be able to automatically adjust the compression force and compensate for the reduction of the compression force caused by wear, etc., so as to facilitate on-site maintenance and installation.5. The improper installation of the control valve will cause uneven friction, for example, when the horizontal installation, the stem dead weight will increase pressure on the lower line of packing, increase friction; And for the upper line of the packing, it has poor sealing performance due to the pressing force reduction.
Installation of NPS6 (DN150) soft seated ball valves with pneumatic actuator at a chemical factory.Soft seated ball valve, taking a rotation movement of 90 degrees, maintain a ball as its plug body with a round hole passing through its axis. The Nanfang soft seated ball valves take a main function of distribution, cutting off and transition of medium’s flowing. With a small rotation of 90 degrees and turning torque, soft seated ball valves share a well-performed sealing effect. Recently, the relevant development of soft seated ball valves has been endowed with the characteristics of flow throttling and controlling.Soft seated ball valves share such characteristics with tight configuration, stable sealing, and convenient repairing. The sealing surface of soft seated ball valves maintains a closing position between ball’s surfaces without any flushes by the mediums, employed in the working mediums of water, solvents, acids, gas and etc, as well as mediums under tough working environment such as oxygen, methane, ethylene and etc. The soft seated ball valves can share an integral structure or a combined type.