GLOBE VALVES

GLOBE VALVES

MstnLand is a reliable globe valve supplier. We provide high-quality industrial globe valve products, including API globe valve, DIN globe valve, ANSI bellow seal globe valve, Angle globe valve, Y type globe valve, and Pressure seal globe valve etc. Our globe valve factory has the capability to manufacture various electric globe valvestypes you need.

The globe valve is high quality valve and only allows one-way medium flow and it relies on valve rod pressure to make both the sealing surface of valve disc and the valve seat tightly fit and then prevent medium flow. As an experienced and tested globe valve manufacturer, Mstnland offers globe valves that are featured by elbow saving and easy operation and can be installed in the bend of the pipeline system.

Types Of Globe Valve For Sale

Cast Iron Globe Valves

As a professional cast iron globe valve factory, Mstnland provides high-quality cast iron globe valves for customers to choose from.

Cast Steel Globe Valves

As a cast steel globe valves manufacturer, Mstnland provides different types of high-quality cast steel globe valves for customers to choose from.

Forged Steel Globe Valves

As a globe valves manufacturer, Mstnland provides different types of high-quality forged steel globe valves for customers to choose from.

Stainless Steel Globe Valves

As a superior stainless steel globe valves manufacturer, Mstnland provides different types of high-quality stainless steel globe valves for customers to choose from.

Brass Globe Valves

As a superior brass globe valve manufacturer, Mstnland provides different types of high-quality brass globe valves for customers to choose from.

Globe Valve Working Principle

Globe valve, also called cut-off valve, is one of the most widely used valves. The reason why it is so popular is that the friction between the sealing surfaces during the opening and closing process is small, and it is relatively durable. With its relatively small opening height, the globe valve is easy to manufacture and convenient to maintain, which is not only suitable for medium and low pressure but also suitable for high pressure. The closing principle of the globe valve is to rely on the pressure of the valve stem to make the sealing surface of the disc and the sealing surface of the valve seat closely fit, preventing the flow of the medium. The structural length of the globe valve is longer than that of the gate valve. At the same time, the fluid resistance is large, and the sealing reliability is not strong during long-term operation.

As one of the most important cut-off valves, the globe valve plays an important role in the aerospace field. As an important component of aerospace equipment, the globe valve realizes the functions of medium delivery, cut-off, and adjustment, and its sealing performance directly affects the safe and reliable operation of aerospace equipment. Studying the influencing factors and rules of the sealing characteristics of typical globe valves has guiding significance for the structural design of the valve sealing pair, so as to improve the sealing performance and reliability of the valve.

Globe Valve Maintenance

Globe Valve Operation

Not only should we learn to install and maintain the globe valve, but also we must be able to operate it.

When opening and closing the globe valve, the force should be steady without impact. When the globe valve is fully opened, the handwheel should be turned upside down to tighten the threads to avoid loosening and damage. When the pipeline is first used, there is a lot of internal dirt. You can open the globe valve slightly, use the high-speed flow of the medium to wash it away, and then close it gently (not fast or violently to prevent residual impurities from trapping the sealing surface). Turn it on again, repeat this many times, flush out the dirt, and then put it into normal work.

If the globe valve is opening for a long time, there may be dirt on the sealing surface. When it is closed, use the above method to flush it, and then formally close it tightly. If the handwheel and handle are damaged or lost, they should be provided immediately, and can not be replaced with a flexible wrench, so as to avoid damage to the valve stem and failure of opening and closing, which may cause accidents in production.

Some medium cools down after the globe valve is closed, causing the valve to shrink. The operator should close it again at an appropriate time so that there are no crevices on the sealing surface. Otherwise, the medium will flow through the crevices at high speed and it will easily erode the seal.

During operation, if the operation is found to be too laborious, the reason should be analyzed. If the packing is too tight, it can be properly loosened. If the valve stem is skewed, personnel should be notified to repair it. In some globe valves, when closed, the closing part is heated and expanded, which makes it difficult to open; if it must be opened at this time, the valve cover can be loosened half a turn to one turn to eliminate the stress on the valve stem, and then move the handwheel.

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