What is a block valve?

Block valve is technically any valve that has the ability to block movement in one or more directions. In practice, most people refer to the block valve as a valve that can prevent movement or allow movement without restrictions. This means that the valve must not have any effect on the movement in the OFF position and completely blocks the movement in the ON position. This definition separates it from some standard valve types and completely removes one -way valves from the group. The most common type of block valve is a simple gate valve, although there are hundreds of different variations.

The gate valve has covers slightly larger than the tube to which it is connected, and the control stem that sticks from the side. A gateway is built into the valve, which can be increased and reduced through the external control source. This type of valve is common in many different types of machines and can be operated by manually or an automated system connected directly to the valve.

Innejširchrder, almost any type of valve can be a block valve. All inNTIL must be done, it is to prevent movement from at least one direction and qualify. Because it is basically any valve, there is a tendency to narrow the term down to more selected groupings.

With a more restrictive meaning, the block valve must do two things. When the valve is open, there must be no effect on the movement of the flowing material. When it is closed, it must completely prevent the material from moving the valve.

Allows certain common valve types from the group without checking through the open block valve. For example, the Globe valve usually has two chambers and the material flows. Although open, the flowing substances are disrupted by the transition process from one chamber to another. The second restriction deletes the controls and other one -way valves from the list because the material is blocked from only one direction.

This definition is the rule rather than actual specification.Since the true meaning of the block valve is so wide, they have different industries and processes for their own specific meanings. The result is not unusual that one industry calls a specific valve of the valve type, while the other does not.