The primary advantages of a ball valve are its extreme ease of use and flexibility. The China ball valve is one of the most reliable and wanted amongst various other countries of origin. It is also very comfortable to use and this is because these valves not only provide the benefits of a regular but are very inexpensive and are available readily in the market. Most provide for easy maintenance also because they do not require frequent lubrication like other valves.
A China ball valve works perfectly in situations where it is needed to regulate and maintain high pressure, high volume and high temperature flow. In order to purchase a particular type of China; you should keep in mind certain things. The method of control should be the first thing you need to look for. The valve function also must be considered. Normally a including a China is a quick to use device at it does not need to be rotated completely and a 90 degrees turn of handle is enough. This means that you can maximize on operation time and even the amount of wear associated with long term usage diminishes.
There are two broad categories in a China. One is the floating ball type which is of course the most commonly used. In this, since the ball is not fixed to the stem there is plenty of freedom and the upward directed pressure helps maintain the seal by constantly pushing the ball back against the downstream seat.
The second is the Trunnion valve. Here a pin secures the ball. This is great in high velocity systems. The Trunnion China uses a specified segmented ball. These types of valves provide the least friction between ball and seal.
The China valve is available in a variety of materials. The material is chosen based on the usage and the industry. The common materials are stainless steel, brass, copper, cast iron, metal alloys, plastic and some other types of steel. In order to choose the best material for your use, it is advisable to discuss with the manufacturer your needs so that you do not make the wrong decision yourself. You must be aware of the temperature and the type of media that the will be exposed to.
Ball valves are the most suitable device in situations where a complete shut off becomes necessary. These provide a number of advantages that other types of valves do not offer.
