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In some chemical, chlor-alkali, polysilicon, electroplating, and other industries, the media in pipelines usually have acid and alkali resistance. Metal valves generally have poorer acid and alkali resistance than plastic valves, due to the chemical reaction between metal elements and carbon elements contained in metal valves and acid and alkali substances, while plastic valves, whose organic element bodies are not easy to react with acid and alkali substances, Plastic valves have a tendency to replace metal valves, but metal valves have their unique strength characteristics and have irreplaceable roles in the current industrial and civil fields.
Generally, plastic valves have poor rigidity and temperature resistance compared to metal valves. In some high temperature and high pressure situations, even medium temperature and medium pressure situations, metal valves are still the design choice.
When the temperature is above 80 degrees Celsius, plastic valves are prone to deformation, and even good PVDF valves cannot be used for long periods in piping systems above 80 degrees Celsius. CPVC is typically used in 60 degree environments, while UPVC is more commonly used in environments below 45 degrees.
In addition, plastic valves are not resistant to some aromatic stems. In the chlor-alkali industry, wet chlorine gas can also cause PVDF valves to corrode. Soft sealing valves generally use PTFE NBR FPT EPDM SI and other seals. These seals have their own unique properties. Generally speaking, PTFE is one of the seals with good performance. However, due to its high hardness, it is not suitable for sealing valves in low-pressure pipelines due to its easy cracking and leakage. F46 is a compromise product, which overcomes its hard characteristics, but also loses its corrosion resistance and temperature resistance.
In humid chlorine, SUS316 hard sealed metal valves are still irreplaceable products, although their service life is also relatively short. In some domestic chemical industries, many units have crystallized on the valve body after using PVDF valves.
Under special working conditions and harsh conditions, Fushan Valves always grasp the lifeline of quality, make breakthroughs in processing technology, and pay attention to details. Under the condition of ensuring the purity of raw materials, the precision of various components, and at various nodes that are prone to leakage, preventive measures are taken to select appropriate sealing units, and basic processing such as bore, throwing, milling, and turning is even more achieved, It has built a reputation in the field of special pipelines and equipment.
Its important cited customers, such as: Indonesia Jinguang Paper High Corrosion Pipeline Control Valve in the chemical industry, Wuxi Suntech Photovoltaic, Nantong Zhonggu Photovoltaic Plant, Shanghai Japan Lingyou Chemical, are even more numerous
In the field of high-pressure pipelines, metal valves are used in high-rise fire protection pipeline systems such as Guizhou Power Plant, Universal Wood Steam Pipeline System, and Wuhan New World Building.
Every product of Fushan is meticulously crafted, and in the company's more than 30 years of historical development, there has never been a serious quality accident.
Fushan Valve Technology Division www.szfushan.com
Fushan Valve You Can Trust
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