What is the function of the flanged gate valve?

Kinvalve One Stop Solution of Flanged Gate Valve

At Kinvalve, there are three types of flange standard gate valves you can choose from, they are ANSI flanged gate valve, DIN flanged gate valve and JIS flanged gate valve.

Please visit our website for more information on this topic.

Kinvalve ANSI gate valve flange type is the most common flanged gate valve. All of our ANSI flanged gate valve connections are designed to follow the standards of ASME/ANSI B16.5, B16.47 as well as B16.25.

In the case of ANSI flange type gate valves, standard defines the number of bolt holes on the flange and the center distance between bolt holes and flange center hole.

At Kinvlave, We can offer you 4 pressure ratings from Class 150 to Class 600. These standard flange type gate valves are available in sizes from 1/4&#; to 12&#;.

Class 150: 1/2&#; to 12&#;

Class 300: 1/2&#; to 12&#;

Class 400: 1/2&#; to 10&#;

Class 600: 1/2&#; to 10&#;

When we talk about an ANSI gate valve flange type, it will be described as &#;flanged gate valve Class 150&#; or &#;flanged gate valve 150#&#;.

Refer to the DIN flanged gate valve, the diameter of the flange end is described with &#;DN&#; in mm unit, and the pressure rating is defined with &#;PN&#; with &#;bar&#; unit. Kinvalve can supply 15 sizes from 10 to 300 and XX pressure Classes from 2.5 to 16 bar:

Example: DN 100 PN 16

For JIS gate valve flange type, the flanged gate valve dimensions are described in inches with pressure rating 10K and 20K. Kinvalve JIS standard flanged gate valves are available in size range from 1/2&#; to 12&#;.

According to the above description, each standard flange gate valve is equipped with flange size according to its standard definition. You can easily fix the flange end to the matching flange of the pipe.

At Kinvalve, you can select many types of flange faces from every international standard flange type gate valves. Usually, these flange face types meet different interface and pressure rating requirements.

When your applications require a relatively lower pressure rating, RF for raised face or FF for flat face is recommended for your better choice.

As a leading flanged gate valve manufacturer in China, Kinvalve has been manufacturing flanged gate valves available in different materials for clients all over the world in the past 18 years.

As our customer, Kinvalve is able to provide you with the privilege to select the material, stem configuration, size, design standard as well as pressure rating, operating mode and personalized packing design.

No matter the flanged gate valve you want is in the screwed bonnet or bolted bonnet or comes with a handwheel, gearbox, electric actuator, or pneumatic actuator, you can take advantage from Kinvalve&#;s high design and manufacturing capabilities as well as full supply chain controlling capacity.

If you need to make a decision, please contact us!

Flanged Gate Valve: The Ultimate FAQ Guide

This comprehensive guide will answer all questions you have about flanged gate valve.

It has all the useful information you need including applications, function, installation, working principle and many other critical concepts.

So, if you want to be an expert in flanged gate valves, read this guide.

What is a Flanged Gate Valve?

Flanged gate valve

This refers to a linear motion valve with a flat closure element sliding into the flow stream to offer shut-off.

This type of valve uses a rectangular gate inserted into the path of the flowing fluid.

A flanged gate valve requires little space along the pipe axis.

It restricts flow of medium when fully opened hence allowing the valves to offer direct flow with minimum pressure drop.

Flanged gate valves are common in applications with relatively large pipe diameters because they are simpler to construct.

In service, this valve is either fully opened or fully closed.

Moreover, flanged gate valves come in a variety of designs hence broadening choice options for different types of applications.

What is the Function of a Flanged Gate Valve?

This design of this device is to enable it to turn the flow of fluid through pipes on and off.

It is also vital in controlling flow pressure through the valves and pipes.

Generally, a flanged gate valve is used to completely shut off fluid flow when closed or provide full flow when opened.

What are the Components of a Flanged Gate Valve?

Parts of flanged gate valve

Ideally, a flanged gate valve consists of a wide range of components.

All the components play different critical roles in ensuring the efficiency and performance of the device.

The main parts of this device include;

• Valve body
• Seat
• Disc
• Spindle
• Wheel

Nevertheless, this mechanical device also consists of the parts equally essential in guaranteeing its effectiveness.

These other parts include the following;

• Bonnet
• Stem
• Gland flange
• Gland follower
• Hand-wheel
• Bonnet gasket
• Packing
• Stuffing box
• Yoke

How does a Flanged Gate Valve Work?

Flanged gate valve is designed for on/off services.

Technically, a flanged gate valve consists of three main parts; body, bonnet, and trim.

Generally, the body is connected to the piping system by a flanged or welded connection.

The bonnet, which contains the moving parts, is joined to the body with bolts to allow easy cleaning and maintenance.

The valve trim consists of the stem, disc, gate, and seat rings.

Ideally, the main operation mechanism is relatively simple.

When you turn the hand-wheel, it rotates the stem.

This translates into vertical movement of the gate via the threads.

Once the gate valve is fully open, the disc is completely removed from the flow.

Thus there is virtually no resistance to the flow. As a result, little pressure drops when fluid passes through the flanged gate valve.

This device is considered multi-turn since it takes more than one 360° turn to open or close the valve fully.

When the gate is lifted from the path of the flow, the valve opens.

It seals the bore when it returns to a close position, leading to a full closure of the valve.

In general, the design of a flanged gate valve is for full-area flow to minimize pressure drop. It also allows passage of a pipe-cleaning pig.

A flanged gate valve is unsuitable for regulation or throttling of flow since accurate control is relatively difficult to attain.

Moreover, high velocity of flow in the partially open valve may lead to erosion of seating surfaces and disc.

What are the Applications of Flanged Gate Valve?

Flanged gate valve units are used in a variety of applications across different industries and residential settings.

This is due to the diversity of construction materials, design combinations, and trim offerings of this mechanical device.

Some of the common applications of flanged gate valve include the following;

• Pharmaceutical manufacturing
• High-temperature cooking units
• Oil and gas industry
• Petroleum industry
• Marine applications
• Power plants
• Mining
• Water treatments
• Offshore applications

Why should you Invest in Flanged Gate Valves?

Flanged gate valves offer a broad range of advantages when used across different sectors.

Such benefits make investing in this mechanical device worthwhile.

Some of these reasons include the following;

1. It Offers Suitable ON/OFF or Shutoffs Features

This is necessary since it allows you to attain the best results when regulating flow in the respective application.

It also makes your work easier and, at the same time, enhance overall operational efficiency.

2. It Offers a Minimum Pressure Drop

When operating this device, the likelihood of experience a pressure drop in fluid flow is close to zero.

And this is advantageous since it hardly affects the flow, making it easy to attain desirable results overall.

3. It is Bi-directional

Ideally, you can use flanged gate valves to shut-off the system in either flow direction.

This is beneficial since it demonstrates its easy usability and user-friendliness, especially where a quicker response is necessary.

4. Slightly Cheaper

Compared to other types of valves, such as ball valves, flanged gate valves appear relatively affordable.

The benefit here is that it allows you to get the device even when operating within a tight budget.

Moreover, it also allows you to save a considerable amount of money when you choose it over a ball valve.

5. Suitable for High Pressure and Temperature

A flanged gate valve is also ideal for applications, which require high pressure and temperature, such as power plants.

It is sturdy enough to withstand all the possible harsh and unforgiving conditions likely to be exposed to such applications.

6. Low Maintenance

This mechanical device also requires low maintenance due to its sturdy structure and design.

This is vital because it demonstrates its durability, which is critical, especially in preventing unnecessary repair and replacement.

What is the difference between Flanged Gate Valve and Flanged Ball Valve?

These two sets of devices are used in relatively similar settings, but they tend to vary on a wide range of aspects such as the following;

Flanged gate valve

Flanged ball valve cross section

a) Operation

A flanged ball valve uses a rotary ball consisting of a stem and bore.

Turning the handle attached to the stem triggers the ball to rotate hence opening or closing the valve.

A flanged ball valve needs a 90° turn to regulate or shut-off the flow.

Moreover, the flanged ball valve opens whenever the handle is parallel to the pipe and closed when the handle is perpendicular to the pipe.

A flanged gate valve, on the other hand, uses a gate to control flow of medium.

Technically, the gates are a sturdy-disc structure attached to the stem.

So the gate is lifted for the valve to open and returned down to original position to close the valve.

The flanged gate valve comes with a bonnet, which regulates gate position when rotated.

It is a multi-turn valve since you have to rotate it more than 360° to close or open the valve.

b) Cost

A flanged gate valve is comparatively cheaper than a flanged ball valve.

c) Space

A flanged gate valve requires smaller space for installation compared to a flanged ball valve.

Ideally, the former operates by turn; hence it won&#;t necessarily take up a big space where it is installed.

But the latter uses a handle, which has to make the 90°-turn to control fluid hence requires a relatively large space.

d) Visual Detection

It is somewhat easy to detect whether a flanged ball valve is opened or closed.

On the other hand, this is relatively difficult to detect when using a flanged gate valve since it is a multi-turn valve.

How does Flanged Gate Valve and Sluice Valve Compare?

Ideally, both flanged gate valve and sluice valve perform the same function.

They stop fluid flow and also work by the principle of a tapered disc sling into grooves.

However, the difference is that a flanged gate valve is designed for closed pipelines.

On the other hand, the sluice valve is designed for open systems such as dams.

The essence is to control fluid to a specific overflow level.

The sluice valve is suitable for high-level fluid applications.

When water levels surpass the required level, it can flow over the top of sluice gate.

But in a flanged gate valve, the fluid flow pressure will build up and later find another path out to the valve strength.

How do you Install Flanged Gate Valve?

Proper installation of a flanged gate valve is integral in determining its efficiency and overall performance in different settings.

The actual installation technique may vary slightly depending on various factors such as the project and size of the valve.

Nonetheless, installation instructions from this device remain the same as follows;

• You can install flanged gate valves in any orientation. However, it would be ideal if installed upright, particularly if for bigger sizes.

This helps in easing access to the hand-wheels

• Make sure you verify the material of flanged gate valve, seat as well as disc before installation.

It allows you to determine whether there are any defects possibly caused by storage or transportation.

• Complete all the welding works before installing the valve. While at it, make sure the flange cools to ambient temperature before installing the gate valve using the appropriate gasket.
• When installing, ensure there is no welding residue, pickle paste, rust, or any debris that could be in the pipe before installation.

If need be, you can wash with water and detergent.

• Ensure there is no warpage of the flange. Also, there should never be any misalignment of gate valve concerning the flange.

Often, these cause valve problems, especially if it is not aligned correctly with the flange or pipe.

Where necessary, make sure you support the valve to reduce the load on the piping assembly.

• Install all the spacing bolts but be careful not to damage the valve seat. Adjust the face to face of the flanges to get enough space when the piping is spread open.

Enough space allows slipping of the valve in or out for service.

• Once you&#;ve centered the pipes, insert the bolts to enable bottom of the valve to rest upon them.

This prevents the flanged gate valve from falling through.

• Now tighten the bolts one at a time in stages to ensure even pressure is applied and seal formed between flanges, gasket, and valve.
• After completing the installation process, operate the valve severally to ensure it never moved during setting up.

How do you Select the Ideal Flanged Gate Valve Material?

Ideally, a flanged gate valve is used in different types of applications.

Thus it is likely to come into contact with a range of media.

When picking a flanged gate valve, the material used for its manufacturing is a critical aspect to look into.

It plays an integral role in preventing premature pipe system delays or valve failure.

Link to solid

This type of valve is available in an assortment of materials.

To select the right flanged gate valve material, you must consider several vital criteria such as the following;

• Operating pressure
• Material&#;s compatibility with injected media
• Effectiveness of coating on materials
• Service temperatures
• Composition of the media in contact with exposed parts of the valve
• Duration the valve is exposed to the media

Which Types of Stems are used in Flanged Gate Valves?

Flanged gate valves ordinarily use two types of a stem; which include the following;

Stem for flanged gate valve

i. Rising Stem Flanged Gate Valve

These types of stems are fixed to the gate.

They rise and lower together as the valve is operated, thus providing a visual indication of the valve position.

This makes it possible to grease the stem.

A nut rotates around the threaded stem, which in turn moves it.

Rising stem flanged valve has an inside screwed stem, and the packing is subject to wear.

This often is a result of up and down movement and turning motion of the stem.

This design of stem is ideal for above-ground installation.

ii. Non-rising Stem Flanged Gate Valve

This design is threaded into the gate and rotate with wedge rising and lowering in the device.

The rotation of the wheel triggers the operation of the valve.

However, the stem hardly comes out of the housing.

Non-rising stem flanged gate valves take up less vertical space since the stem remains within the valve body.

These types of valves are always fitted with a local visual pointer indicating the valve&#;s position.

Moreover, these designs are usually ideal for both underground and above-ground installations.

Is there a Specific Direction for Installing Flanged Gate Valve?

Not necessarily.

You can install flanged gate valves in any direction.

But the efficiency of the device may vary depending on the specific orientation it is installed in.

Ideally, the recommended orientation for installing this type of valve is having the stem in a vertical position.

This orientation is preferred since it aligns the stem to the disc and the disc to the body guides.

And this helps keep everything in proper orientation throughout the open and closed cycles.

Such orientation, in addition to laws of gravity, guarantees effectiveness of this mechanical device.

How do you Choose the Right Flanged Gate Valve?

There are core elements you must look into when selecting a suitable flanged gate valve material.

These factors are essential in making it possible for you to make the right selection decision, and they include the following;

Flanged gate valve

a) Rubber Quality

It is a vital aspect in determining the durability and overall functionality of the valve.

Essentially, the rubber must withstand continuous impact from impurities and chemicals without getting damaged.

Moreover, it should also absorb tiny impurities in the seat to close tight.

b) Tight Construction

Flanged gate valves feature two fundamental design issues surrounding construction, including stem sealing and body/bonnet sealing.

In stem sealing, the sealing is placed in the stem&#;s bonnet, which retains pressure inside the valve.

Ordinarily, stem-sealing should be maintenance-free and needs to last the service life of the valve.

In bonnet/body sealing, the tightness between the body and bonnet is attained by using a gasket embedded in a recess in the valve.

This design ensures the gasket stays correctly positioned and not blown due to pressure surges.

c) External Corrosion Protection

External protection is from resistance is critical of a flanged gate valve&#;s service life.

If the device is coated, the coating material and technique should be uniform and comply with DIN part 1 standards.

d) General Performance

It is always imperative to pay attention to the operating and closing torque.

This is irrespective of whether you are operating the flanged gate valve by hand-wheel or using an electric actuator.

The ideal torque for operating the valve from an open to a closed position should range from 5-30 Nm, depending on valve size.

Notably, torques of less than 5 Nm are unsuitable in most cases since they encourage pressure surges in the pipeline.

Closing torques are those required to close the valve to a drop tight position.

Additionally, the inside valve diameters should correspond to the nominal size of the valve.

This is essential since it allows use of pipe cleaning devices.

What are the Common Materials for Manufacturing Flanged Gate Valves?

Flanged gate valve materials are manufactured from a wide range of materials.

However, suitable materials must meet the minimum standards for valves in specific environments.

The common materials include the following;

• Stainless steel
• Brass
• Iron
• Polycarbonate
• Carbon steel
• CPVC

Is Flanged Gate Valve Repairable?

Yes.

Flanged gate valves are relatively simple that use guides and a gate made of metal to stop and start fluid flow.

Generally, this type of gate valve is rarely problematic.

You can easily repair it, but it depends on the specific part or component with the issue.

When repairing, you need first to disassemble the unit into pieces to identify the specific part to repair.

This has to start by turning off the water source and removing it from the pipeline system.

Unscrew the ends using correct tools and pliers to remove the gate valve&#;s bonnet.

At this point, you can figure out the specific component that needs repair or replacement and act accordingly.

If the damaged part is among the main components of the valve, then you&#;ll rather replace the entire unit.

Otherwise, repair or replace the specific part accordingly and re-assemble the unit appropriately.

Can you use a Flanged Gate Valve to Reduce Pressure?

Not really.

Technically, the purpose of a flanged gate valve is to provide ideal on/off shutoff features.

And in many applications using this valve, incidents of pressure drop are usually unlikely.

However, this device does not necessarily reduce pressure.

What it does about reducing pressure is to limit the fluid pressured depending on the flow.

If your flow is zero, then then the flanged gate valve will never work to reduce pressure.

But for higher flows, you may need to keep o adjusting the valve depending on the flow changes, thus making it a hectic undertaking.

How much does a Flanged Gate Valve Cost?

The cost of a flanged valve gate varies depending on a host of variables.

One of these variables is the size.

Normally, these units are available in different sizes since they are designed for varied applications.

Flanged gate valves designed for more demanding applications such as marine, power plants, and other industrial applications are costlier.

On the other hand, those designed for residential applications and ordinary plumbing are somewhat cheaper.

The other variable is the material used for manufacturing the flanged gate valve.

Different materials have varied ratings based on the properties and other elements.

Highly regarded ones such as polycarbonate, stainless steel, and brass among others, are likely to be relatively expensive.

Another variable is the specific brand you are purchasing.

Some brands are comparatively popular in the market hence tend to be a bit costlier than others.

How durable is a Flanged Gate Valve?

In general, the design construction of flanged ball valves entails the use of sturdy materials.

These materials can withstand different types of conditions in various applications.

Therefore, these guarantee longer life of this device in the respective projects since all factors are often figured out.

But the extent of longevity may vary based on the specific mechanical, chemical, and environmental conditions it is exposed to.

The type of media that passes through the flanged ball valve also determines the durability.

And most importantly, the maintenance routine is also an integral determinant of the overall durability of this valve.

The bottom line is that all factors constant a typical flanged ball valve may last for at least 10 years.

What are the Limitations of Flanged Gate Valve?

Stainless steel flanged gate valve

Flanged gate valve has a few disadvantages, which include the following;

• It is predisposed to vibration and noise, especially in partially open areas.
• At times it would be difficult to accomplish some repairs such as lapping and grinding may be difficult.
• Some flanged gate valves are susceptible to pressure or thermal locking, depending on application.
• You cannot use this type of gate valve to regulate or throttle a valve.
• Depending on operation, it can be subject to seat and disk wear.

How do you Maintain Flanged Gate Valve?

To attain the best results and excellent longevity from flanged gate valve, you must adhere to its maintenance routine.

Several elements determine the maintenance needs of this mechanical device.

Nevertheless, here are some of the ideas you can implement when maintaining this unit;

• If you are not using the valve regularly, ensure you cycle it at least once a month.
• Always ensure you relieve the system pressure before carrying out any maintenance
• You can replace the flanged valve gate by removing the bonnet and stem. Screw out the gate and replace it with a new component. Then install the top of the body and refit it accordingly.

How do you Select the Right Flanged Gate Valve Supplier in China?

Finding the right supplier for a flanged gate valve can be quite challenging.

In essence, it is important to ensure that the manufacturer you select is suitable from different perspectives.

Nevertheless, there are imperative factors that you need to consider when choosing the right manufacturer for this unit.

These factors include the following;

· Experience

An ideal flanged gate valve manufacturer should have relevant experience in the manufacturing of this unit.

This is essential because it demonstrates knowledge of the supplier in different aspects revolving around gate valves.

· Excellent Production Capacity

In some instances, you may need several units of this valve.

Therefore, you&#;ll need to find a manufacturer with capacity to produce enough units within a specified timeline.

· Affordability

A suitable manufacturer to consider should price these products&#; availability.

Technically, the quality of the flanged gate valves should be worth the cost in different aspects.

· Warranty

A manufacturer that offers a warranty is an ideal choice to consider.

First, it demonstrates the supplier&#;s confidence in the specific product.

Moreover, it gives you peace of mind since you are sure the manufacturer will accept it back if any mechanical malfunction.

· Excellent Customer Service

It is also important to seek a flanged gate valve manufacturer with excellent customer service.

This makes it easy to channel your issues, especially for troubleshooting the unit if it develops problems.

With the information in this guide, you can choose high performance flanged gate valves.

In case you have any question or inquiry, Kinvalve technicians are here to assist &#; contact us now.

I. Introduction

A flange type gate valve is a crucial component in managing the flow of fluids and gases within industrial piping systems. The valve serves as an automated means to control the rate of flow, pressure, and direction of substances passing through large-scale pipes. Flange type valves have been around for centuries, but recent improvements have made them more efficient than ever before.

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II. Understanding Gate Valves

A. Define gate valves and their purpose in controlling fluid flow.

Flange gate valves are a type of valve that functions by blocking or opening the passageway in a pipe. The blockage is created when the two halves of a gate, known as wedge gates, come together to shut off the flow. When open, these wedge gates will move away from each other and allow fluid flow through the pipe. Gate valves are typically used in high-pressure systems, and they are an important element in controlling fluid flow.

B. Discuss the different types of gate valves available.

Gate valves come in a variety of types, including globe, swing check valve, sluice, and pinch. Each type has its own set of advantages and disadvantages, so it&#;s important for engineers to consider the specifics of their application before selecting which valve to use. Generally speaking, globe valves are best suited for controlling pressure while swing-check valves are better at controlling flow rate. Sluice valves are often used for isolating parts of a system while pinch valves are designed to provide tight shut-off and better control over the flow rate.

C. Highlight the unique features and benefits of flange type gate valves.

Flange type gate valves are popular because they offer superior shut-off performance and remain tight even after years of wear and tear. They also require reduced maintenance due to an improved seal design. Further, these valves tend to be more reliable because the flanges can be sealed with either metal or nonmetal gaskets depending on the application. Finally, flange type gate valves are more cost-effective than other types of valves due to their durability and easy installation.

III. Streamlining Fluid Flow with Flange Type Gate Valves

A. Explain how flange type gate valves contribute to precise flow control.

Flange type gate valves are ideal for controlling the flow rate of liquids and gases in a precise manner. This is because these valves have a low-friction seal that minimizes wear, which makes them more reliable and efficient than other types of valves. Additionally, we can equip flange type gate valves with actuators, enabling operators to remotely operate and adjust the flow rate in real-time, making necessary modifications as needed.

B. Discuss the design elements that enable efficient fluid flow management.

The design of flange type gate valves makes them well-suited for efficient fluid flow management. Our valves incorporate wedge gates that operators can operate with a hand wheel or an actuator, depending on the application. Furthermore, these valves offer the ability to adjust the opening, allowing operators to control the flow rate of fluid through the pipe.

C. Showcase real-world examples of industries where flange type gate valves are extensively used.

Flange type gate valves find extensive application in various industries such as industrial manufacturing, mining, water treatment, and oil & gas. They play a crucial role in controlling the flow rate of chemical-laden fluids during petroleum refining or regulating steam pressure in power plants. Furthermore, these valves find extensive use in wastewater management systems and have garnered popularity in the brewing and food & beverage industries.

IV. Key Advantages of Flange Type Gate Valves

A. Emphasize the importance of certifications and quality control in valve manufacturing.

Manufacturers of flange type gate valves must adhere to rigorous quality control standards and meet certifications in order to guarantee reliable performance. These valves undergo testing in accordance with relevant industry regulations and standards, assuring customers of their safety and reliability.

B. Highlight the global reach and reputation of companies specializing in flange type gate valves.

Numerous global companies specialize in flange type gate valves, known for quality products and customer service. Their presence spans multiple regions, offering a wide range of valve types for various applications.

C. Discuss the expertise and knowledge required to manufacture high-quality flange type gate valves.

The quality of flange type gate valves is heavily dependent on the knowledge and expertise of the manufacturer. Companies specializing in these valves require expertise in materials, design criteria, welding processes, and assembly techniques. Thorough understanding of testing protocols is essential to create reliable products. Manufacturers must also utilize advanced technologies like 3D printing to meet customer requirements.

V. Conclusion

Flange type gate valves are an invaluable tool for controlling fluid flow in a variety of industries. Flange type gate valves deliver top-notch performance and reliability, ideal for precise pressure and flow control. Manufactures prioritize rigorous quality control to meet safety standards and assure customer satisfaction. Companies specializing in flange type gate valves possess global reach and expertise to provide efficient fluid flow management solutions.

If you are looking for more details, kindly visit Flanged end gate valve.