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An Introduction of Connection Types and Maintenance of Valves

Valves are widely used in daily life, so I would like to introduce connection types and maintenance of Ball valve with vertical mounting pad so that we can know them better.

Valves mainly have three connection types, including flange connection, welded connection and threaded connection.

Flange connection is easy and convenient to install and dismantle, but valves with flange connection are heavy, and the prices are relatively high, so flange connection is suitable for pipes with all kinds of drift diameter and pressure. In order to improve flange connection, now most of valve manufacturing industries take stainless steel flanges, so we can see 2PC Ball Valve on the market.

Valves usually take welded connection when the nominal diameter is a littler larger and the condition is harsh and the temperature is high. Welded connection is suitable for all kinds of pressures and temperature, and they are more reliable than flange connection under harsh condition. However, the valve with welded connection is difficult to dismantle and reinstall, so it is usually used for those harsh conditions with high temperature such as pipes at heat power station, nuclear energy and ethylene project.

Threaded connection is mainly used for valves with nominal diameter below 50mm. if the nominal diameter is too big, it will be difficult to install and seal the connector.

In order to make 3-Way Vertical Ball Valve with Mounting Pad play good functions and have long service life, we must pay much attention to the maintenance of valves. Though the maintenance of valves seems simple, we still need to be careful at following points:

First, we should pay attention to the grease capacity. As we know, if the grease capacity is not enough, the sealing side will wear down quickly because of lack of lubrication, and if the grease capacity is too much, the waste will be produced. Therefore, we must inject grease at a proper amount.

Second, we should pay attention to the pressure. When injecting grease, the injecting pressure will change regularly, and when the pressure is too low, the seal will leak or lose effect, but when the pressure is too high, the injecting mouth will be blocked.

Third, we should also pay attention to the switches of the 2PC Ball Valve MF supplier. Generally speaking, when we are maintaining ball valves, the valve is at open condition, but we can also choose to shut the valve for maintenance at special condition, but not all valves are maintained at open condition. For example, according to the gate valves manufacturer, gate valves should be maintained at close condition to make sure that lubrication can fill the sealing groove along the sealing ring.

Anyway, valve products must be maintained well, and then they can work well later.