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Stainless Steel Threaded Check Valve
  • Stainless Steel Threaded Check ValveStainless Steel Threaded Check Valve

Stainless Steel Threaded Check Valve

As an important member of the automatic valve family, the stainless steel threaded check valve produced by our Tanggu Shengshi Huagong plays a key role in preventing the backflow of the medium in various fluid conveying systems, ensuring that the fluid in the system always maintains a unidirectional and stable flow.

This stainless steel threaded check valve has a threaded connection method, that is, the internal or external threads at both ends of the valve are screwed together with the corresponding external or internal threads on the pipe to achieve a tight installation with the pipe. This connection method is not only easy to install, without the need for complex welding or large flange connection tools, but also extremely convenient to disassemble during later maintenance or replacement of the valve, and only requires an ordinary wrench. In the building water supply and drainage, HVAC, small industrial pipelines, and food, beverage, pharmaceutical and other industries with high requirements for hygiene and corrosion resistance, the stainless steel threaded check valve manufactured by Shengshi Huagong has become a core component to ensure the safe and stable operation of the system with its unique advantages.


Product advantages

(I) Excellent corrosion resistance

The stainless steel material gives the threaded check valve excellent corrosion resistance, which enables it to work stably in a variety of harsh media environments. In the chemical industry, various strong acid and alkali media are often transported, such as sulfuric acid, hydrochloric acid, sodium hydroxide and other solutions. Valves made of ordinary materials are easily damaged by corrosion, while stainless steel thread check valves can effectively resist the erosion of these media with their high-quality stainless steel valve bodies and valve discs, ensuring the normal service life of the valves and reducing the frequent replacement and maintenance costs caused by corrosion. In the food and beverage industry, although the corrosiveness of the medium itself is relatively weak, the hygiene requirements are extremely high. The stainless steel thread check valve can not only prevent the backflow of the medium, but its corrosion-resistant stainless steel material can also ensure that the food and beverage being transported will not be contaminated by material corrosion during long-term use, meeting the industry's strict standards for hygiene and safety.

(II) Compact and convenient installation structure

The threaded connection method makes the installation structure of the stainless steel thread check valve extremely compact. Compared with traditional flange-connected valves, it does not require large flanges and long connecting bolts, greatly shortening the overall length of the valve. In places with narrow spaces such as building pipe wells, its compact structural advantages are particularly obvious. It can be easily installed in a limited space, reducing the impact on the surrounding pipelines and equipment layout. Moreover, the installation process of the threaded connection is simple and can be operated with an ordinary wrench. No professional welding equipment or large installation tools are required, which reduces the difficulty and cost of installation. When the valve is maintained or replaced in the later stage, it can also be quickly and conveniently removed from the pipeline, which improves maintenance efficiency and reduces the impact of equipment maintenance on production or life.

(III) Reliable sealing performance

The high-precision fit between the valve disc and the valve seat and the possible auxiliary sealing measures, such as rubber sealing pads, provide reliable sealing performance for the stainless steel threaded check valve. When the valve is closed, the valve disc is tightly pressed against the valve seat under the dual effects of the backflow pressure of the medium and its own gravity, forming a reliable sealing surface to effectively prevent the leakage of the medium. Even under the working conditions of large pressure fluctuations in the pipeline system, the sealing structure between the valve disc and the valve seat can automatically adjust the sealing pressure and always maintain a good sealing effect. For example, in some industrial production processes, the medium pressure in the pipeline may fluctuate frequently due to changes in the production process. The stainless steel thread check valve can stably maintain the seal, prevent medium leakage, ensure the safety and stability of the production process, and avoid environmental pollution and production accidents caused by medium leakage.

(IV) Efficient check performance

The valve disc design of the stainless steel thread check valve has been carefully optimized and the action response is fast. When the flow direction of the medium changes, the valve disc can be closed in a very short time, effectively cutting off the medium reflux channel and preventing a large amount of medium from flowing back. Its fast closing speed can significantly reduce the risk of damage to the equipment in the pipeline system caused by medium backflow. In some industrial production lines that have extremely high requirements for fluid delivery continuity, such as chemical and pharmaceutical industries, once the medium flows back, it may cause serious consequences such as interruption of production process and decline in product quality. The efficient check performance of the stainless steel thread check valve can ensure that the production process is not disturbed by medium backflow, ensure the continuity and stability of production, improve production efficiency, and bring good economic benefits to the enterprise.

 

Technical parameters

Project

Parameter range

Nominal diameter

DN15 - DN50 (larger or smaller diameters can be customized according to special needs)

Nominal pressure

PN1.0MPa - PN1.6MPa (some special models can withstand higher pressures, such as PN2.5MPa, PN4.0MPa, etc.)

Applicable temperature

-10℃ - 120℃ (depending on the different stainless steel materials and sealing materials, the applicable temperature range varies. For example, if 316L stainless steel and high-temperature resistant sealing materials are used, the applicable temperature can be appropriately increased; if ordinary 304 stainless steel and conventional sealing materials are used, the applicable temperature range is relatively narrow)

Applicable media

Water, hot water, cold water, drinking water, food and beverages, some chemical reagents (depending on the stainless steel material, choose to adapt to different corrosive media. For example, 304 Stainless steel is suitable for medium with low corrosiveness, while 316L stainless steel is suitable for medium environment with more corrosiveness), air, etc.

Valve body material

304 stainless steel, 316 stainless steel, 316L stainless steel, etc. (different materials have different corrosion resistance and mechanical properties, and the appropriate material can be selected according to the specific working conditions)

Valve disc material

The same stainless steel material as the valve body

Valve stem material

Stainless steel (usually consistent with the valve body material to ensure overall corrosion resistance and mechanical performance matching)

Sealing form

Rubber seal (suitable for general media, good sealing performance, can effectively prevent media leakage), metal seal (suitable for high temperature, high pressure or special media, high temperature and high pressure resistance, but the sealing surface processing accuracy requirements are higher)

Connection method

Thread (internal or external thread)

Standard

Follow GB (national standard), HG (chemical industry standard) and other domestic relevant standards and some international standards, such as ISO (International Organization for Standardization) standards, are used for design, manufacturing and testing to ensure that product quality and performance meet industry standards

Stainless Steel Threaded Check Valve



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