High quality with best design for your hardest applications

Kinvalve Metal Seated Ball Valve – Specially Engineered for Extreme Applications

When it comes to your processing industry, quality investments must be considered for your system. Kinvalve has decades of engineering expertise and one of the metal seated ball valve manufacturers recognized globally by various industries.

Designed using innovative technology and employed the highest standards in manufacturing, Kinvalve offers high performance metal seated ball valve that can handle abuse from extreme service conditions wherein the soft seated ball valves cannot simply provide.

Whether you will utilize our quality-made metal seated ball valves in high temperature or extreme pressure applications, Kinvalve offers a wide range of options for specialized hard coatings or treatments.

In whatever processing industry that you have we offer you practical and innovative solutions for your piping requirements.

Kinvalve uniquely engineered metal seated ball valve is rigidly designed to provide optimum performance for your processing plant useful for chemical process, oil & gas, mining, refining, power generation, pulp production and petrochemical.

It comes in the standard full port design stainless steel/carbon steel material technically compatible in handling high flow capacity with minimum turbulence.

For our metal seated ball valves, the typical size range is from ½” to 12” with a pressure range of Class 150 to 600 and comes in various end connections including threaded or flanged end.

Kinvalve metal seated ball valves can endure a temperature range of -196⁰C to +650⁰C (-320°F to 1200°F) suitable for a wide array of media and processing applications.

Metal seated ball valves are intended for extreme applications in processing industries that deal with abrasive or corrosive media.

That is why Kinvalve is dedicated to providing you with a superior metal seat ball valve that is capable of handling your tough processing application.

Designed with added special features such as blow-out proof stem and stem packing ensures operational safety and longevity.

Preload of ball and seats are sustained by the high strength Belleville string for a constant low valve operating torque.

Having a variety of stem seal designs suited for various application which can ensure zero-emission in the work area.

Kinvalve metal seated floating ball valve is a must for extreme processing applications to guarantee you flawless applications, durability, and consistent optimum performance each time.

Being one of the reliable metal seated ball valve manufacturers, our world-class quality and innovative products are sound investments that your industry can bank on.

Metal Seated Ball Valve: The Ultimate FAQ Guide

Before importing metal seated ball valves, read this guide.

It covers everything you need to know about metal seated ball valves such as features, specification, uses, components, actuation mechanism to classification criteria, among other critical aspects.

So, if you want to learn more about metal seated ball valves, read this guide.

What Is Metal Seated Ball Valve?

Metal seated ball valves are special types of valves that use metal as the seat material.

You can use the metal seat ball valve to control the flow of fluids by opening and closing the passage.

Metal seated ball valve

How Does Metal Seated Ball Valve Work?

Metal seated ball valves are available in two piece or three-piece designs.

Apart from that, the metal seated ball valve can have a floating or trunnion mounted ball valve depending on size.

Due to the different types available, you should expect them to work on different principles.

In other words, there is a huge difference between the mounting of the ball and how seat seals on the ball.

In the trunnion valve, you should note that the ball has a mechanical anchor both at the top and also at the bottom.

It uses a line pressure and spring mechanism to push the upstream seat against the plastic ball.

As that happens, the spring in the trunnion mounted valve seal will hold the seat to the face of the valve.

In low or no differential pressure, the spring will hold spring will ensure that valve seal remains in position.

The sealing force will then come from the fluid as it forces the seat against the ball face.

This working principle or design will work perfectly for high pressure and larger valves.

On the other hand, the floating ball valve has a very simple structure.

It consists of a floating ball without an anchor to a trunnion within the valve body.

Under line pressure the ball will drift towards the downstream site pushing very tightly against the metal seat.

It will then form a very tight seal preventing entry and exit of fluids through the system.

How Do Metal Seated Vs Soft Seated Ball Valves Compare?

In any type of ball valve, you can either use the metal seated ball valve or the soft seated ball valve.

Here is a comparison between the metal seated ball valve and the soft seated ball valve.

Metal Seated Ball Valve

Metal seated ball valves use metallic materials such as stainless steel 316 and Monel among others as the main seat.

You can use the metal seated ball valves in dirty fluids since the particulates cannot cause damage on the metal.

Apart from that, you will use the metal seated ball valves in applications that have very high erosion and corrosion rates.

It also has a bigger and stronger actuator model because it uses very high levels of torque to operate.

You will use the metal seated ball valve in severe service conditions such as high erosion and high temperature applications.

metal seated ball valve

Soft Seated Ball Valve

Soft seated ball valves usually have a thermoplastic material such as NBR and PTFE among others.

Soft seated ball valves are the most suitable valves that you will use in clean fluids but not dirty fluids.

You should consider using clean water on soft seated ball valves because particulates in dirty water may cause damages.

In addition to the above features, soft seated ball valves have better shut-off capabilities that their metallic counterparts.

You will also need a lower torque when operating the soft seated ball valves in comparison to the metallic counterpart.

You will use the soft seated ball valve in other general applications such as gas and oil industries.

soft seated ball valve

What Features And Benefits Of Metal Seated Ball Valves?

Jut from the name, you can note that the metal seated ball valves are made of metallic materials.

In essence, you will use hard metallic materials such as stainless steel 316 thus making very strong.

It is the reason why it can withstand very tough application environments without damages thus increasing shelf life.

Apart from that, metallic materials are suitable for dirty water applications since debris on dirty water cannot cause damages.

It also comes complete with particular actuator models that are capable of withstanding high pressure conditions.

You can comfortably use the metal seated ball valves in high torque applications because of the high strength.

Which Applications Are Metal Seated Ball Valves Suited For?

Metal seated ball valves are the most suitable types of valves that you can use in high torque applications.

It is a very strong appliance that can withstand very high pressure as well as continuous debris bumps.

You can also use it in severe service conditions with high temperatures, erosion and abrasion such as slurry.

Apart from that, it is also the most suitable type of valve that you will use in dirty water applications.

What Are The Options And Considerations For Metal Seated Ball Valve Material?

Obviously, you will note that the most suitable materials for metal seat valves is a metallic material.

There are different types of metallic materials that you can use in making the metallic ball valves.

Here is a list of the main metallic materials that you can use in fabrication of metal seated ball valves.

• Stainless steel such as SS 316
• Monel

When choosing the right type of materials, there are specific considerations you have to make.

Here are some of the considerations that you will have to look at.

Strength Of The Materials

The metallic materials must be strong enough to withstand the pressure from the severe applications.

It should also be strong enough to withstand bombardment from other debris in flowing water or fluids.

Resistance To Corrosion

Another important factor that you need to consider is the resistance to corrosion of the metallic materials.

Here, you will look at the ability of the metallic materials to resist corrosion since it works under different hydra conditions.

In other words, you ought to opt for a metallic material that is capable of withstanding hydraulic shock and extreme flashing.

Apart from that, it must withstand abrasive process fluids and very high temperatures exceeding 1000 degrees Fahrenheit.

What Is The Difference Between Resilient Seated Ball Valves And Metal Seated Ball Valves?

In controlling different types of fluids, you can opt for the resilient seated ball valve or metal seated ball valve.

To make your choice easier, here is a comparison between the resilient seated ball valve and the metal seated ball valves.

Resilient Seated Ball Valve

Resilient seated ball valves have two sealing surfaces where one id made of metal and the other of non-metal resilient surfaces.

It has very poor mechanical properties but with very good sealing capabilities that can reach zero.

It is not resistant to high temperatures and can easily wear out.

You will use the resilient seated ball valves in low to medium pressure conditions or applications.

resilient seated ball valve

Metal Seated Ball Valve

Metallic seated ball valves have metallic valves and sealing surfaces or any other hard materials.

It has very good mechanical properties that can withstand the high pressure and temperature in demanding applications.

In other words, metal seated ball valves are anti-wear and can resist very high temperature conditions.

The only disadvantage is the fact that it has very poor sealing properties in comparison to the resilient seated ball valves.

You can use the metal seated ball valves in medium to high pressure applications due to the strong nature.

metal seated ball valve

What Are The  Components Of Metal Seated Ball Valve?

A valve will only perform its purpose with proper coordination of the main parts of the equipment.

Here are the main parts or major components of the metal seated ball valves.

Valve Body

This is a pressure vessel with all the components that you need to control the opening and closing of the valves.

You can also use it as the main connector between two different sections or parts of the tubing system.

valve body

Ball

This is a metallic sphere with a hollow flow path that runs through the center of it.

Apart from the hollow center, it has a connection point to a shaft responsible for connecting it.

Metallic Seats

These are round and donut shaped discs that form seals between the ball and the body of the valve.

Stem

You will depend on the stem to connect the internal ball to the outer parts of the valve.

This connection of the stem will help in facilitating proper rotation of the ball.

Packing

These are flexible seals which fit around the shaft to prevent leaking media through the valve.

In other words, it will help in preventing media from escaping through the joints between the ball and the seat.

Bonnet

This is the part of the metallic seated ball valve that will house the main stem as well as the packing.

Actuator Or Operator

This is an extension of the metallic seated ball valve that you can use to control the stem of the valve.

It can be in different forms such as a gear, lever, motor operated gear, or a pneumatic actuator.

What Are The Two Main Technologies For Metal Seated Ball Valve Design?

There are two main technologies for metal seated ball valve design.

You can either choose between the following types of designs when choosing the metal seated ball valve design.

Floating Ball Design

Floating ball design has a hollow ball between two or more than two capped metallic bonds to form tight seals.

It forms tight seals between the ball and body at the outlet and the inlet ports of metal seated ball valve.

Trunnion Mounted Ball Design

Trunnion mounted ball design has soring loads against the round hollow ball against the ball which does not pivot.

The ball will rotate on its axis in the trunnion mounted ball design with a bearing and shaft on the bottom.

What Is Severe Service Metal Seated Ball Valves?

Within your process plant, you will use the severe service metal seated ball valves in severe service control.

You will use it in applications with erosive, cavitating, noisy, corrosive, high temperature, and high pressure drop velocity media.

It uses very hard materials that are capable of withstanding very high temperatures and pressure thus increasing longevity.

What Types Of Severe Service Metal Seated Ball Valves Are There?

There are quite a number of severe service metals seated ball valves that you can use on different applications.

Here are some of the severe service metal seated ball valves that you can choose from depending on application specifications.

Catalyst Feeders

You can use the catalyst feeder to increase the cycle’s life from 10,000 cycles to several millions between changeouts.

It is also one of the most durable types of severe service metal seated ball valves that we produce.

Forged Ball Valves

This type of metal seated ball valves has wear-resistant overlays and can be tested to the highest standards.

It is the most convenient type of severe metal seated ball valves that will offer solution for most demanding applications.

Power Valves

This type of severe service metal seated valve offers longevity for high pressure water and steam services.

It has HVOF chrome carbide coatings for high pressure, high temperature and erosive application protections.

Lined Throttling & Control Valves

It comes compete with abrasive resistant liners which help in extending service life of the severe service metal seated ball valves.

You will use it in applications that require longer life throttling and control valves to complete the application specifications.

High Cycle Slurry Valves

This type of valve has the capability of withstanding erosive slurry, corrosion, high pressure, as well as high temperatures.

It will provide you with the peace of mind that the valves are strong enough and can withstand extreme stress.

3 Piece Low Pressure Valves

This type of valve is perfect for high temperature, abrasive, and high cycle applications.

You are bound to save a lot more since it is very easy to clean and maintain thus saving on cost.

What Does CS ENP Standard For Metal Seated Ball Valves Stand For?

CS is an abbreviation for carbon steel while ENP is an abbreviation for Electroless Nickel Plated for the valves.

Whenever you come across a metal seated ball valve that is CS ENP standard approved, just know it is of high quality.

These standards will mean that the metal seated ball valve has the following properties.

Deposit Hardness

This is a topological property that determines the hardness of the metal seated ball valves.

It takes into account the heat treatment temperature as well as the heat treatment time to get the best of results.

Corrosion Resistance

In this case, the metal seated ball valve has the capacity of withstanding very high corrosion levels in different corrosive environments.

ENP will act as the most important barrier that will protect the metal seated ball valve by creating a pore free barrier.

Wear Resistance

ENP provides the metal materials for manufacturing the valve with a wide variety of engineered applications related to wear resistance.

The coatings have very high hardness levels with intrinsic lubricity that can afford excellent corrosion resistance.

Which Other Standards Apply To Metal Seated Ball Valves?

You must also be very careful when deciding on the type of metal seated ball valves you purchase.

One of the most important factors that you have to pay close attention to is the quality.

Luckily, we have the quality standards which will help in determining the quality of the metal seated ball valves.

Here are some of the most important quality standards you need to have a look at.

• ANSI Quality Standards such as ANSI PTC 25 standards for pressure relief devices
• API Quality Standards such as API 598 standards for valve inspection and testing
• BS Quality Standards such as BS 5351 standards for steel ball valves for the petroleum, petrochemical, and allied industries
• MSS Quality Standards such as MSS SP61 standards for hydrostatic testing of steel valves
• NACE Quality Standards such as NACE MR 01-5 standards for valves used for oil and gas production

What Are The Valve Leakage Classifications For Metal Seated Ball Valves?

The shutoff ability of any appliance has to do with the type of valve you are using.

Apart from that, you can also look at seat materials, actuator thrust, type of fluid and pressure drop to control valve shutoff.

There are 6 types of leakage classifications that you ought to look at with the most common being:

Class IV

This classification looks at the metal-to-metal leakage that you will find in valves with metal plugs and metal seats.

Class VI

You can identify it as soft seat classification which involve the plug or the seat or both having soft materials like PTFE.

Apart from the most common ones stated above, you can also classify the valves under these classes.

Class I

You can identify it as the dust tight class that refers to the resilient seated or metal seated valves.

Class II

You can use this type of classification for balanced singe or double port valves with metal piston ring seals.

Apart from that, it is the best classification that you will have for valves with metal seats.

Class III

You will use this type of classification for valves as that in Class II classification with high reliability levels.

Class V

This classification is for balanced single ports and single ports valves with extra tight piston seals for metal-to-metal seats.

What Is The Available Size Range For Metal Seated Ball Valve In The Market?

Well, there is no limit on the size of metal seated ball valves that you can have.

Here, you can have any type and size of metal seated ball valve that you need to fit your application specifications.

You will determine the size by looking at the overall port diameter in either inches or millimeters.

In typical cases, metal seated ball valves range between 25 mm to 305 mm in diameter.

You can have it in bigger or smaller diameters depending on your application specifications.

What Is The Suitable Pressure Rating For Metal Seated Ball Valve?

Just like the size variable, the pressure ratings for the metal seated ball valves will also vary considerably.

One important factor to consider when determining the pressure ratings is the application requirements.

Apart from that, you will also look at the pressure ratings in terms of classification of the metal seated ball valves.

For instance, in single seated for pump controls, pressure rating ranges between 150 to 300 psi.

Which Connection Options Are There For Metal Seated Ball Valves?

During the fabrication process of the metal seated ball valves, there are quite a number of connection options.

Here are some of the connection options that you can settle on depending on your application specifications.

Flanged

You can opt for the screwed or welded flange that you can make by bolting two or more flanges together.

It is important to have a gasket in between so as to provide it with the most efficient type of seal.

Butt Weld

Here, you will place two metal pieces together end by end then join them together at that particular joint.

You have to make sure that the surface of the weld joints is exposed on the same plane.

Socket Weld

In the socket weld, you will have the pipes inserted into another pipe joint to create a firm and strong joint.

You will use them in joining small types of pipes together unlike that of butt weld which joins bigger pipes.

Clamp Style

This involves using a clamp to join two pieces of metal pipes together to help in transfer of fluids.

It creates a very strong connection between the pipes and increases ease of removing the joints.

What Is The Typical Operating Temperature For Metal Seated Ball Valve?

Metal seated ball valves are capable of working under very high temperature conditions.

Here are the most typical temperature working conditions that the metal seated ball valve work under.

• CF8M valves: 1,450°F (788°C)
• WCB valves: 800°F (426°C)
• Chrome Moly C5 or C12: 1,000°F (538°C).

How Do You Use Metal Seated Ball Valves For High Temperature Applications?

Metal seated ball valves are the most economic methods that you can employ to control flows in high temperature conditions.

In this case, you will look at high temperatures as anything that is higher than 204 degrees centigrade.

No matter the applications, you can use the metal seated ball valves in high temperature applications by looking at the following.

• Drivetrain Performance
• Trim Troubles
• Internal Coatings
• Centerlines and Clearances

What Is The Flow Characteristic Of Metal Seated Ball Valve?

The relationship that exists between valve capacity and valve stem travel is the flow characteristics of metal seated flow valves.

It implies that the design of the valve affects how the capacity of control valve changes as valve moves through complete travel.

Due to variation in trim design, most valves are not linear in nature to meet the large variety of control applications.

What Are The Custom Options For Metal Seated Ball Valves?

There are quite a number of custom options that you can explore when choosing the metal seated ball valves.

Here are some of the key considerations you can look at for informed choices.

Insulation Jackets

You can fit the valves with reusable and removable valve insulation blankets or jackets.

Mounting Hardware

You can opt for different types of mounting hardware to eliminate or minimize sealing and stem performance problems.

Other Options

Apart from the above, you can also look at other options which include:

1. Bidirectional shutoff
2. Special end connections

• Class V sealing in reverse directions

1. Actuator Mounting
2. Characterized trim

What Are Testing Procedures For Metal Seated Ball Valves?

When testing the metal seated ball valves, you will have to test for temperature as well as pressure among others.

Here are some of the test procedures that you can perform on the metal seated ball valves.

• API Fire Testing for metal seated ball valves
• Pressure test for metal seated ball valves

What Is The Warranty Duration For Metal Seated Ball Valve?

Well, the warranty period for metal seated ball valves will guarantee you a longer service life.

The duration period will guarantee you that the metal seated ball valve will serve you for long.

For the parts of the metal seated ball valve, you will have 12 months warranty duration.

Other than that, you will have 18 months warranty for the goods you purchase after date of shipment.

Which Factors Should You Consider When Selecting Metal Seated Ball Valve?

As a beginner, you may have a lot of problem in choosing the right type of metal seated ball valve.

If you are not keen enough, you may make a mistake and choose the wrong type of metal seated ball valve.

To begin your search for a good metal seated ball valve, here are some factors you have to consider.

Understand The Process Conditions

You have to understand the application specifications of your process before you begin the selection process.

Some of the factors that you have to consider include the main dimensions and magnitude of the application specifications.

Calculate Valve Flow

In this case, you will have to consider the type of fluid that will flow through the metal seated ball valve.

The medium that you will pump will help in determining the best type of valve that will work for you.

Identify The Valve Function

You have to know how the metal seated ball valve will work according to the application specifications.

You have to determine whether you want it open or closed, for control flow, 2-way or 3-way, or multipurpose.

At Kinvalve, we offer affordable and reliable metal seated ball valves, depending on your specific needs and requirements.

Contact us now for all your metal seated ball valves.