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2020/5/28
German standard bellows globe valve

As a new type of globe valve, the German standard bellows globe valve has developed rapidly in the industry in recent years due to its double sealing characteristics of bellows and packing. Especially under the implementation of energy conservation and environmental protection policies, more and more industries are turning their attention to such products, which are widely used in various industries such as petroleum, chemical industry, steam system, thermal oil system, pharmaceutical, natural gas, hot and cold water, etc. .
Our company, as a professional OEM bellows valve manufacturing enterprise with its own coated sand foundry and fully automated finishing production line, with strong technical research and development capabilities, perfect production and quality control system and short delivery time, low price, The advantage of high cost performance provides the best and most complete OEM service for the bellows valve industry.


Product advantages
1. The new valve body structure adopts German coated sand casting technology, which greatly improves the surface finish and mechanical properties of the valve body, reduces the appearance of air holes, sand holes and cracks, and enhances the tensile strength of the casting.


2. When the valve is closed, the conical sealing surface with "scraping effect" can automatically remove surface impurities, which can ensure reliable sealing and longer service life of the valve flap.


3. The combination of bellows + filler, static seal and dynamic seal double seal design fully realizes the sealing performance requirements of the valve during use, enhances the service life, and makes up for and solves the problem that the traditional filler globe valve is easy to wear, resulting in the valve The problem of seal leakage is in line with international and domestic sealing standards.


4. All bellows pass 100% helium test, and all valves pass 100% intelligent test equipment according to standard test to ensure zero leakage of products.


5. Products with DN150 and above are equipped with special devices, which can adapt to various installation angles, and can effectively prevent the valve from shaking during use, and play a role in protection and noise reduction. Especially installed on the outlet of the heat transfer oil pump or the steam pipe with high flow rate, the internal noise damage caused by the strong noise and strong vibration effectively increases the service life by more than 2 times.


6. Various flap designs can be provided according to working conditions and media requirements, such as throttle flaps, flat soft seal flaps, cut-off check flaps, etc.

2020/3/3
What are the advantages of bellows valves in use?

It is often used in places with strict requirements on valve stem sealing, such as high vacuum applications and nuclear industry. Use bellows instead of or in combination with stuffing boxes on ordinary valves.
It completely eliminates the shortcomings of the common valve stem packing seal aging fast and easy to leak, not only improves the use of energy efficiency, increases the safety of production equipment, reduces maintenance costs and frequent maintenance, but also provides a clean and safe working environment. The bellows valve is because of its simple structure and its low price, which makes it so far that it has few "competitors". The only thing that can compete with the diaphragm valve is the so-called bellows valve, also known as a bellows valve.

2020/3/3
Zhejiang AIV Fluid Technology Co., Ltd.

Mainly engaged in the design, development, manufacturing, and sales of castings, forgings, valves, pumps, machinery, actuators, and intelligent robots; manufacturing and sales of pipe fittings, plastic products, hardware products, and electronic components; free import and export of goods and technologies permitted by the state trading. (Projects that are subject to approval according to law can be operated only after approval by relevant departments). We always adhere to the principle of customer first, serve our customers with heart, and insist on using our services to impress our customers. "Business philosophy, adhere to the" customer first "principle to provide our customers with quality services. Mainly engaged in the design, development, manufacturing, and sales of castings, forgings, valves, pumps, mechanical equipment, actuators, intelligent robots; pipe fittings, plastics Manufacturing, sales of products, hardware products, and electronic components; free import and export trade of goods and technologies permitted by the state. (Projects subject to approval in accordance with the law can only be operated after approval by relevant departments). We always adhere to the principle of customer first, serve customers with heart, and insist on using our services to impress customers. "Business philosophy, adhere to the" customer first "principle to provide our customers with quality services

2020/3/3
Why does the check valve not work?

Checks are also called check valves and check valves. However, in actual use, many users found that it was obvious that the check valve was installed and did not start the check valve effect. Today, we will analyze the related problems of the check valve check function failure:
Since the non-return valve is the unidirectional flow of the medium, you must pay attention to the installation direction of the valve, and install it according to the direction of the medium flow arrow on the valve, or determine the installation direction of the valve according to the starting direction of the valve disc. Without the effect of the check valve, the high-pressure water will flow back to the water pump, and the pump impeller will reverse under the impact of the high-pressure water. Because the impeller is subjected to the impact load of high pressure water, the impeller or other parts may become loose or damaged in severe cases.
Select different types of check valves according to different installation positions. Swing check valves, wafer check valves, silent check valves, muffler check valves, shuttle check valves, etc. can be installed in horizontal positions. Can also be installed on vertical pipes