The origin and current situation of Fengchi pump valve- pinch valve
Hello everyone, today I will tell you about the history and current situation of this product of the pinch valve.
In 1953, the American Red Valve Company invented and manufactured the pinch valve, using materials provided by world-class suppliers such as DuPont, Firestone, Goodyear, etc., through the perfect combination of Red Valve's own rubber synthesis technology and synthetic fiber technology, began to Market promotion of this highly wear-resistant, zero-failure valve product. American Red Valve has created the only valve that can stably control the slime for the world's first slime pipeline.
American Red Valve
The pinch valve has entered the Chinese market in recent years. From unfamiliar to gradual acceptance, this kind of valve with high cost performance and can withstand harsh environments has been widely used in China. There are not many well-known manufacturers of pinch valves in the world. Today, Redvalve in the United States, Flowrox in Finland (formerly Larox, renamed Flowrox in 2012), AKO in Germany, etc. can be purchased in China, but their high prices and unstable delivery time make everyone daunted
What followed was an attempt by domestic manufacturers to imitate them. At present, there are many large and small manufacturers in China that have launched pinch valve products, which quickly occupied part of the market with ultra-low prices, bringing a lot of misunderstandings to customers who have just come into contact with this kind of valve, for example: the service life of the pinch valve is too long. Short, usually the tube sleeve is broken in a few months, or even a month. The reason is that the mastered rubber technology is not enough to produce high wear resistance, high corrosion resistance and long life. Rubber tube sleeve. Even the most common imported pinch valve has an average service life much longer than that in China. Of course, customers can choose according to the actual situation, after all, the relative price of imported valve products is relatively high. The following is a real shot of the domestic damaged liner:
Damaged inner bladder of pinch valve.
The rubber liner is the most important part in the pinch valve and is the core of the pinch valve, providing corrosion resistance, wear resistance and pressure bearing capacity. The quality of the pinch valve depends on the quality of the liner. The inner tank is squeezed by pneumatic, electric, manual or hydraulic driving methods, so as to achieve the function of switch or adjustment.
The ruber inner tube of the pinch valve is the core component, which is usually composed of inner layer, outer layer and reinforcing fiber. Formed by a primary vulcanization/secondary vulcanization process. Several companies with a long history have their own characteristics. American Red Valve holds many advanced liner patents, Flowrox has many years of mining equipment manufacturing background, AKO adheres to the German industrial standardization and refinement style, etc.
According to the function, the inner bladder of the pinch valve can be divided into: standard inner bladder, thickened inner bladder, high pressure inner bladder, etc. There are many classifications by material. The common rubbers are: natural rubber, fluorine rubber, neoprene, Hypalon, EPDM, nitrile rubber, food-grade rubber, chlorobutyl rubber, etc. About twenty or thirty kinds .
In today's industry, when some solid or liquid products containing abrasive substances such as particles, powders, fibers, and pulp are often transported through pipelines, or some chemical processes contain corrosive media, the pinch valve can be said to be the most best choice. can be use on:
· Sewage treatment plant (sludge treatment, gravel cleaning, raw sewage, lime, charcoal mud)
Power plant (FGD system, ash removal system, coal transportation)
Mining (tailings, flotation control, sludge discharge lines, tailings filling, various other slurries)
Cemical processes (corrosive and abrasive media, powders, granules)
·And many fields such as paper mills, pulp mills, electronics industry, food industry, cement, sand, glass and industrial sewage treatment plants.
Are you surprised that pinch valves can be used in so many industries?
The following advantages will make you more impressed with it.
1. High wear resistance and corrosion resistance: it can withstand various medium concentration acids and alkali salt solutions of any concentration, and can transport ore pulp, dry and wet powders and medium with crystalline objects.
2. Fll-bore: When the pinch valve is in the open state, its overall structure can be completely integrated with the pipeline system, it will not change the inner diameter and structure of the pipeline, and has no effect on the structure of the flowing medium in the pipeline.