SALVADOR INDUSTRIAL

China Globe Valves Manufacturer

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Plastic Globe Valve(PVC /CPVC /PPH/PVDF)

Size: DN15(1/2″)-DN150(6″)

Standards:DIN、ANSI

Lead time: 30 days around

MOQ: 10ctns                       

Delivery: Ocean or Express   

Port: Ningbo or Shanghai

Place of origin: China

All You Need To Know About Globe Valve

Plastic globe valves are specifically designed for controlling the flow of fluids in systems where corrosion resistance and lightweight materials are of paramount importance. They are often utilized in chemical, water treatment, and other industrial applications. This article provides guidance on shut-off valves. It discusses applications, mechanisms, factors to consider when purchasing, and the different types of globe valves available in the market. Finally, this guide will help you compare globe valves with other types of industrial valves.

What Are Globe Valves Used For?

Globe valves are versatile flow control devices with a variety of applications across different industries. Their primary function is to regulate, start, or stop the flow of fluids. Here is an industry-specific overview of the common uses for globe valves:

Oil and Gas Industry

Chemical Industry

Pharmaceutical Manufacturing

Pulp and Paper Industry

Power Generation

Mining Industry

Water Treatment Plants

 

How Glob Valve Work

Plastic globe valves control the fluid by controlling the rise and fall of the valve core, thereby opening or closing the valve. This design makes it suitable for applications that require controlled fluid flow, especially when corrosion resistance and low cost are required.

Valve body structure: Plastic stop valves usually consist of an outer valve body and an inner valve core (valve disc). The valve body and valve core are made of corrosion-resistant plastic materials to adapt to different working environments.
Valve core lifting: The valve core is usually located inside the valve body and is connected to the operating device (handle, electric motor, pneumatic device, etc.) through the valve stem. By rotating the operating device, the valve stem is raised or lowered.
Spool position: When the spool is lifted to its highest position, the valve is open, allowing fluid to pass. Conversely, when the spool is lowered to its lowest position, the valve closes, preventing fluid flow.
Fluid flow control: By controlling the position of the valve stem, the valve can be partially opened or closed to regulate fluid flow. The opening and closing degrees of the valve can be adjusted as needed to control the flow of fluid.
Sealing performance: Plastic stop valves usually have good sealing performance to ensure that fluid leakage is prevented in the closed state. There is usually a sealing surface between the valve core and the valve body to ensure effective sealing.

Plastic globe valves control the fluid by controlling the rise and fall of the valve core, thereby opening or closing the valve. This design makes it suitable for applications that require controlled fluid flow, especially when corrosion resistance and low cost are required.

Working video of plastic globe valve

Names and materials of Plastic Globe valve components

Design and Operating Principle:
No. Part Name Material
1 Hand whell Alloy material
2 Seal nut FRPP,PVDF,CPVC,UPVC,PPH
3 Yoke seal PTFE
4 Cap nut FRPP
5 Hex nuts Steel
6 Filling plece Steel
7 Bonnet FRPP,PVDF,CPVC,UPVC,PPH
8 Double headed stud Steel
9 Stem Steel+Plastic
10 Capping FRPP,PVDF,CPVC,UPVC,PPH
11 Body FRPP,PVDF,CPVC,UPVC,PPH
12 Rubber washer EPDM,FPM
13 Hex nuts Steel
14 Cap nut FRPP

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Why choose Plastic Globe Valves

Corrosion Resistance

Plastic materials like PVC, CPVC, and PP are highly resistant to corrosion, making them ideal for chemical, saltwater, and other corrosive environments.

Cost-Effectiveness

Plastic globe valves are generally less expensive than metal valves, both in terms of initial investment and long-term maintenance.

Chemical Compatibility

Plastic globe valves are often compatible with a wide range of chemicals, making them suitable for specialized industrial applications.

Environmentally Friendly

Some plastic materials are recyclable, making them a more environmentally sustainable option.

Globe Valves vs. Ball Valves:

Making the Right Choice for Your Industrial Needs

Globe valves and ball valves are prevalent valve types, extensively used across various industries. However, selecting the right valve often leads to the dilemma of choosing between the two. This article aims to clarify their features, applications, and pros and cons to assist in making an informed decision.

Ball valves use a spherical closing element and control flow by rotating the sphere. They are known for their simplicity, reliable sealing, high-pressure tolerance, and corrosion resistance. Their key advantages include quick actuation, low fluid resistance, and the ability to handle high-pressure and temperature conditions. They are ideal for applications requiring rapid fluid shutoff, reliable sealing, and high-pressure and high-temperature resistance. However, their larger sealing surface may lead to leaks under low-pressure conditions.

In contrast, globe valves offer excellent sealing performance, lower actuation force, and high reliability. Their downsides include longer actuation time and relatively higher fluid resistance.

When choosing between ball and globe valves, it’s crucial to assess specific application needs. If rapid actuation, high temperature, high pressure, and corrosion resistance are priorities, ball valves are the better choice. If sealing integrity and reliability are more critical, globe valves may be more appropriate. Other factors like cost, maintenance expenses, and ease of operation should also be considered for the most suitable selection.

The difference between gate valve and globe valve

Different structural designs determine the different functions of the two valves

1. Gate valves cannot be used for adjustment, globe valves can be used for adjustment.

2. When the gate valve is running, it can only be fully opened or fully closed, with small pressure loss and high flow resistance throughout the entire stroke of the globe valve.

3. The maintenance of gate valves is not suitable for on-site pipelines, and the valve seats and discs of most globe valves can be replaced online without the need to remove the entire valve from the pipeline. This is very suitable for situations where the valve and pipeline are welded together.

Cutaway view of Globe valve

Procurement Guidelines for Globe Valves

#Material Compatibility

Choose a valve material that is compatible with the fluids or gases you’ll be handling to avoid corrosion and ensure durability.

#Pressure and Temperature Ratings

Check the valve’s pressure and temperature limits to ensure compatibility with your system’s operational conditions.

#Type of Globe Valve

Select the appropriate type of globe valve (straight-through, angle, or Y-type) based on your specific application needs.

#Certification and Standards

Make sure the valve adheres to industry standards and certifications such as ISO Or other industry standards

#Vendor Evaluation

Assess the reliability and reputation of the supplier. Look for customer reviews, case studies, and quality certifications.

#Customization Options

If your application has unique requirements, check whether the vendor offers customization options like special seals, materials, or actuation methods.

#Lead Time

Confirm the delivery timelines to ensure they align with your project schedules.

#Warranty and After-Sales Support

Understand the warranty terms and the level of after-sales support provided by the vendor, including the availability of replacement parts.
By taking these factors into account, you’ll be better equipped to make a purchase decision that not only meets your immediate needs but also offers long-term reliability and value.

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