Carbon Steel Gate Valve

Carbon steel gate valves can be divided into cast steel gate valves and Forged steel gate valves. It’s a great solution for gas, water, oil, paper/pulp industries complied with ASME B 16.34, API 600, API 602 standards.

  • API600-Carbon-Steel-Gate-Valve
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  • API602-Carbon-Steel-Gate-Valve
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  • carbon steel gate valve raw material inspect
  • API600-Carbon-Steel-Gate-Valve
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  • API602-Carbon-Steel-Gate-Valve
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  • Construction – Rising Stem/OS&Y, Bolted bonnet
  • Body Material – WCB, LCC, WC9, WC6, A217 C5, C12, C12A
  • Disc Material – A216 WCB+13%Cr/ STL, API600 Standard Trim and Customized choices with special coating for extra hardness
  • Seat – A105+13%Cr/ STL, Trim #1, 5 ,8, 16, etc., Integrated, or Renewable Design
  • Stem – A182 F6a/SS410
  • Size Range – DN15-DN600
  • End Connection – Flange, BW, SW
  • Pressure Rating – Class 150 – 1500
  • Standard – Design to API600, API602/603, ASME B16.34, Flange Dimension to ASME B16.5, Butt Welding to ASME B16.25, Face to face meets ASME B16.10, Inspection and testing according to API598
  • Temperature Rage – -40°F – 650°F

Your Reliable Carbon Steel Gate Valve

A robust and highly durable gate valve made from premium carbon steel. It comes with the options of a rising or non-rising stem and multiple sealing and end connections to suit your specific application.

Kinvalve has an outstanding record among other carbon steel gate valve manufacturers and industry players as a trusted and reliable producer of durable gate valves. We achieve our status by ensuring our carbon steel gate valves meet the set international standards for safety and quality.

Kinvalve carbon steel gate valve is made using investment quality carbon steel. This type of steel is a metal alloy combining iron with a significantly higher carbon content than other steel materials.

Carbon steel contains about up to 2.1% carbon, which is fundamental in improving the characteristics and workability of the material.

Carbon steel is easy to cast or forge into quality gate valve design without the risk of breaking. As such, our carbon steel gate valve is strong and resistant to wear even in extreme cycle services.

You can opt to invest in our hard-surfaced carbon steel gate valve if you run a pipeline with corrosive media in transport.

Hard surfacing improves carbon steel’s resistance to corrosion and oxidation, making our carbon steel gate valve a perfect choice for all types of applications.

Kinvalve carbon steel gate valve is ideal for both open or buried installations. You can also use it in high or low-cycle applications as you desire.

Need more info about the Kinvalve carbon steel gate valve? Give us a call now!

Optional Carbon Steel Gate Valves

Carbon steel gate valves comply with API 600, API 602, API 602 and ASME B16.34 design standards with the pressure ratings from Class 150 to 1500, durable for almost all service conditions.

  • Class-150-Gate-Valve

    Kinvalve Class 150 gate valves are in accordance with ASME B16.34 or API 600/602 design standards. Generally, they excel in bolted bonnet, rising stem and flanged ending. These Class 150 gate valves are made of cast steel, suitable for steam, gas and oil industries.

  • Class-300-Gate-Valve
    Class 300 Gate Valve

    Class 300 Gate Valves are made of cast steel, including A216 WCB, WCC, WC6, WC9 etc. The range of dimensions from DN15 to DN600. Suitable for high-pressure applications. The OS&Y design features external stem threads preventing corrosion from the fluid.

  • Class-600-Gate-Valve
    Class 600 Gate Valve

    Kinvalve Class 600 gate valves are designed according to API 600 standard. These heavy-duty flanged gate valves provide the durability and reliablity in a wide range of industrial services, such as boiler plants, power plants and other rugged conditions.

  • Class-800-Gate-Valve
    Class 800 Gate Valve

    Forged steel Class 800 gate valves are designed for the most demanding requirements services. They are tailored to the specifications of API 602 standard. Usually equipped with BW or SW ends. Available in both bolted bonnet and welded bonnet designs.

  • Class-900-Carbon-Steel-Gate-Valve
    Class 900 Gate Valve

    API 600 Class 900 gate valves feature a round bolted bonnet with integrated York, flexible wedge. Available in seal welded seats with stellited faces, lapped to a mirror finish. X-ray non-destructive test is always proceeded before mass production for these high-pressure devices.

  • Class-1500-Gate-Valve
    Class 1500 Gate Valve

    Kinvalve Class 1500 gate valves are tailored in forged steel or cast steel bodies. Class 1500 gate valve has a size range from DN15 to DN400. They are optional with bolted bonnet, welded bonnet and pressure seal bonnet designs accrodance with different pressur ratings.

Products Featured by Wedge Designs

At Kinvalve, carbon steel gate valves are available in four types of gate designs, wedge gate, slab gate, knife gate and parallel slide gate, in accordance to wedge gate valves, slab gate valves, knife gate valves, and parallel gate valves.

  • wedge-gate-valve

    Wedge gate valves are classified into three types according to the disc design. Robust solid wedge gate valves for the high-pressure services with turbulence. Flexible wedge gate valve is versatile to overcome the temperature fluctuation and thermal expansion. The split wedge gate valves consist self-adjusting and self-aligning wedge for better sealing.

  • through-conduit-slab-gate-valve
    Slab Gate Valve

    Kinvalve slab gate valves are manufactured in accordance to API 6D. They are useful in transportation for gas, crude oil and oil related products. They feature bolted bonnet, rising stem OS&Y, a floating gate or seat providing a bubble tight shut off. The through conduit slab gate valves are fully pageable with full bore design.

  • Parallel Gate Valve

    Parallel gate valves consist two-piece parallel discs with springs inside. This design makes them suitable for both low-pressure and high-pressure condition to provide reliable tightness. Parallel slide gate valves tailor in sealing valve cavity regardless of open/close position, suitable for the fluid flow with the unexpected solid particles.

  • knife-gate-valve
    Knife Gate Valve

    Knife gate valve contains a blade-shape gate mainly used to shut off the high content of suspended solids or slurries. You can take advantage of its handling viscous, corrosive and abrasive capability. Also, the sharp blade can be used for dry bulk solids applications. Knife gate valve can be made of stainless steel or carbon steel.

Benefits from Carbon Steel Gate Valves

  • Smaller Fluid Resistance
  • High Abrasive and Corrosive Resistance
  • A Simple Shape, Short Structural Length
  • Ideal for High-temperature and High-pressure Services
  • Robust in Body Strength with Long-lasting Service Life
  • Cost-efficient Choice for A Wide Range of Applications

Why you Should Select Kinvalve Carbon Steel Gate Valves


The Kinvalve carbon steel gate valve is thoroughly tested during all stages of manufacturing and during purchase to ascertain its quality and safety when it is eventually installed in your pipeline.

We also offer you a quality guarantee period of 18 months for every carbon steel gate valve you purchase from us.

Our highly skilled team of engineers and customer care officials are always on stand-by to answer your queries and guide you in purchasing and installing your carbon steel gate valve.

Call us now to get your approved quality carbon steel gate valve.

What Are the Quality Features of the Kinvalve Carbon Steel Gate Valve?

Robust Body

The Kinvalve carbon steel gate comes with a body or housing which is cast or forged out of high carbon steel. This body is strong enough to handle your application’s transient pressures and temperatures.

This sturdy body allows you to use your carbon steel gate valve in open or buried installations for extended periods without wearing it out.

Tailored Gate Options

To suit your flow path requirements, you can choose to invest in a carbon steel gate valve with either a wedge gate, slab gate, parallel gate or knife gate.

Wedge Gate: As the name suggests, a wedge-shaped valve plate. You have three options for wedge gate valves, solid wedge, flexible wedge and split wedge.

Slab Gate: A single-piece disc, with two-piece parallel seats. Robust for high-pressure applications.

Parallel Gate: A two-piece disc design, internal springs between the two halves, ideal for both low and high pressure.

Knife Gate: A blade shaped gate design, suitable for viscous slurry and dry bulk solids.

Optional Bonnet Designs

The Kinvalve carbon steel gate valve comes with some quality bonnet designs that allow you easy to choose for your requirements.

For the safety of your pipeline and the valve in general, you can choose to seal your bonnet by screwing it in, bolting it, or pressure sealing it.

A screwed-in bonnet is ideal for small-sized carbon steel gate valves suited for use in low-pressure applications. The screwed-in bonnet seals by threading it into the valve body.

If you run a medium or high-pressure application, you can opt for a bolted bonnet carbon steel gate valve. The bolted bonnet seals with bolts, nuts, and gaskets to connect with the valve body.

If you have an extreme pressure application, you can choose to welded or pressure-seal bonnet to ensure a tight joint with the valve body.

A pressure-sealed bonnet works with the rising pressure in your valve to ensure no leakage occurs between the bonnet and the valve body.

Versatile Stem

Kinvalve brings you a carbon steel gate valve that can work with either a rising or a non-rising stem. You can opt for either stem option to suit your application needs.

A rising stem carbon steel gate valve has a stem that rises outside the valve when the valve is in an open position. The rising stem gate valve is ideal for open space applications pipelines with enough room to accommodate the rising stem.

The Kinvalve non-rising stem carbon steel gate valve is ideal for underground or open space applications where space is a major consideration.

Durable Seats

Kinvalve offers you high-quality and durable seat options for carbon steel gate valves. These seats come in a unique design to allow for complete sealing around the wedge.

Integral seats are arched out of the valve body or welded directly to create a leak-proof sealing around the wedge of your carbon steel gate valve. These seats are permanent and ideal for applications with no requirements for seat replacement.

You can also choose a seat ring to seal against leakage around the wedge when the valve is in a closed position. This seat can be threaded or pressed into position inside the valve body.

The seat rings are removable and ideal for high cycle applications requiring frequent seat replacement.

The Kinvalve carbon steel gate also has a backseat feature sealing between the bonnet and the stem. This backseat also blocks the pressure in the valve body from reaching the stem packing when the wedge opens for media to flow.

Exceptional Stem Packing and Sealing Options

The Kinvalve carbon steel gate valve requires you to pack around the stem to guard against leakage when the valve is in operation. To this end, Kinvalve offers you the option of live loading the stem or double packing it.

A live-loaded carbon steel gate valve is the best option for high cycle applications and buried installations that run for extended periods without the need for maintenance.

Kinvalve also offers you various O-rings for stem packing and gasket options for sealing around the connecting parts of your carbon steel gate valve.

Hard Surfacing on All Wetted Parts Option

Here at Kinvalve, we offer you the option of hard-facing your carbon steel gate valve if you intend to use it in extreme service applications.

Hard-facing or hard surfacing improves the resistivity of your carbon steel gate valve to corrosion and abrasion.

A cobalt alloy that increases the hardness, strength, and wear resistance of the wetted parts of the valve. Our hard-facing is done by either welding or thermal spraying hard surfacing methods.

Flexible Actuation Options

The Kinvalve carbon steel gate valve can be actuated manually or automatically to suit your application needs.

If you intend to operate your carbon steel gate valve manually, Kinvalve offers you an impactor handwheel option.

In an automatic need, you can choose to operate the carbon steel gate valve by installing an electric, or pneumatic actuator.

Kinvalve offers you an ISO-approved mounting gland that can help you install your actuator safely onto the carbon steel gate valve to prevent leakage during operation.

Carbon Steel Gate Valve: The Ultimate FAQ Guide

This guide covers all information you’re looking for about carbon steel gate valve.

So before investing in your next carbon steel gate valve, read this guide.

What Is The Function Of Carbon Steel Gate Valve?

A carbon steel gate valve limits the media’s flow by lifting the gate to open and lowering it to close.

The distinctive feature of a carbon steel gate valve is its unobstructed passageway, and it induces very minimum pressure loss on the valve.

The unobstructed bore of the carbon steel gate valve makes it easy to clean pie procedures compared to other valve types.

Carbon steel gate valves need to be either open or closed fully not to regulate flow.

Applications of carbon steel gate valves include Petrochemical plants and refineries, which use low pressure.

It is maximum utilized in upstream facilities as they require a very high operating pressure and long opening and closing times.

How Many Types of Carbon Steel Gate Valves are There?

There are several types of gate valves, some of which are classified in three main ways as shown below:

Type Of Body Bonnet Joint

  1. Screwed bonnet: it is one of the most common designs around and serves valves that are not expensive.
  2. Bolted bonnet: it serves in very many designs of gate valves, and it needs a gasket for sealing the joint positioned between the body and bonnet.
  3. Welded bonnet: this design does not need disassembly and is light in weight compared to other types.
  4. Pressure seal bonnet: it is applied mainly for applications of high temperature and high pressure.

Types Of Disk

  1. Solid taper wedge gate valve: it is solid and straightforward, and suited for almost all fluids.
  2. Flexible wedge gate valve: it is a hard disc of one piece and has a perimeter that cuts around. The cuts on this gate valve vary in size, depth, and shape.
  3. Split wedge or parallel disks gate valve comprises two solid pieces and can hold together using a unique mechanism.

Types Of Stem Movement

  1. Rising stem gate valve: in this, the stem goes up when the valve is opened and moves down when it is closed.
  2. Non-rising stem: it does not contain upward movement as the valve disk is internally threaded.
Which Are The Different Gate Designs Of Carbon Steel Gate Valve?

Some of the different gate designs of carbon steel gate valves include:

  • Wedge gates: It contains a wedge form and positions on two seats that are inclined. The primary force which forms by the pressure of the fluid helps in sealing.


Wedge Gate

The sealing of the carbon steel gate valve adds wedging force on the seats due to the tightening of the stems.

  • Parallel slide gates: Makes up a flat rate and parallel seats, and it uses line pressure in making the seal tight to control pressure.


Parallel Slide Gate

  • Slab gates: They possess a hole the size of a bore, and when open, the bore is in line with two seat rings. The alignment of slab gates results in a bit of turbulence and ensures smooth flow.


Slab Gate

  • Parallel expanding gates: They possess two slabs that match together to offer sealing through mechanical expansion of the gate. When they raise, they make it possible for media to flow through and ensure a proper seal.

The upward pressure on one slab and the inhibition by the second slab through a step in the valve’s body enables mechanical expansion outwards. This aspect of mechanical expansion makes it possible for the gate to have a proper seal.

  • Knife gates: Utilized for fluids that are thick and solids that are dry and bulky. They comprise one metal piece that points and self-cleaning because they pass seat rings in opening and closing processes.


Knife Gate

Which Are The Main Components Of Carbon Steel Gate Valve?

The main components of carbon steel gate valve include:

  • Seat: These are either provided together with the valves or come in a type of connection that is a seat ring construction. This construction puts a pressed or threaded seat into position then welded into the valve’s body.
  • Body: It is connected to other parts of the carbon gate valve through flanged, welded, or screwed connections.
  • Stem: It ensures that the disk positions properly and is well connected to the handwheel. Stems are typically connected and forged to the disk using threaded technique or any other available technique.

They categorize into the rising stem and non-rising stem.

  • Actuator: They open and close the carbon steel gate valve in response to either manual or automatic manipulation.
  • Bonnet: It possesses moving parts of the carbon gate valve. It is fixed to the body of the carbon gate valve by a bolt to make maintenance easy.
How Do You Install A Carbon Steel Gate Valve?

Carbons steel gate can be installed in any orientation, but it is recommended to install it upward for bigger sizes. It will ensure more accessible access to the handwheel.

It is essential to verify all the carbon steel gate valve materials to ensure they do not possess any defects that may affect their performance.

Ensure that there is no misalignment or warpage of its flange to avoid problems in the carbon steel gate valve.

Install the bolts for spacing while ensuring that damage is not caused to the valve seat.

Ensure enough space to have the valve in and out of service by adjusting the face to face of the two flanges.

Once the pipes are at the centre, fit in the bolts so that the valve is positioned on them to inhibit them from falling.

The bolts are then tightened one by one in stages. It ensures pressure, which forms a seal between the gasket, flange, and valve.

Once you have completed the carbon steel gate valve installation, the test is done by operating it several times. It will ensure that it did not move during the installation process.

What Is The Working Principle Of Carbon Steel Gate Valve?

Carbon steel gate valve it operates in a straightforward mechanism. When the handwheel of the carbon steel gate valve turns, it rotates the stem and then moves it up or down using threads.

Carbon steel gate valves need more than 360 degrees to turn entirely and open or close the valve. In this way, the gate lifts from the flow’s path, and the carbon steel gate valve opens.

When it lowers to a closing position, the bore seals, thus closing the carbon steel gate valve fully. For a carbons steel gate valve, its vertical travel relationship to that of the flow rate is nonlinear, and the highest variations occur near the shutoff.

When a carbon steel gate valve regulates the flow, the high velocity at partial opening causes wears at the gate and seat.

Which Is Better Between Carbon Steel Gate Valve Vs. Stainless Steel Gate Valve?

Despite carbon steel gate valve and stainless-steel gate valve being made of similar materials, they have some distinguishing factors, which include:

Stainless Steel Gate Valve

It possesses a very high resistance to rusts and stains due to corrosion because its nature is designed to protect against oxidation. It is because it is an iron alloy that is mixed with nickel and chromium.

The nature of stainless-steel material ensures that the stainless steel gate valve can control leaks. Stainless steel gate valve is also able to function in more temperatures compared to carbon steel gate valve.

They serve as the best options in areas of high pressure and temperature.


Stainless Steel Gate Valve

Carbon Steel Gate Valve

It contains a high level of carbon of about 2.1 per cent, which can change the characteristics of steel in the valve.

It is because the carbon in the carbon steel gate valve makes it more robust and harder.

However, the carbon steel gate valve lacks corrosion resistance properties compared to the stainless steel gate valve.

Therefore, although it is durable than stainless steel gate valve, it may be subject to rust and corrosion when exposed to moisture.


Carbon Steel Gate Valve

What Is The Difference Between Double Expanding Gate Valve Single Expanding Gate Valve?

Some of the differences between a double expanding gate valve and a single expanding gate valve include:

  • Double expanding gate valves possess two half disks and isolate the piping system or components when closed.
  • The single expanding gate valve expands only in the closed position, and these seals the two seats.
  • For the double expanding gate valve, the cavity does not fill in both closed and open positions.
  • A double expanding gate valve is relatively expensive as compared to a single expanding gate valve.
How Do You Open And Close Carbon Steel Gate Valve?

The carbon steel gate valve opens by turning the handle gently to the left without excess pressure.

As soon as you feel any resistance when opening the carbon steel gate valve, it would help if you stopped immediately.

It is because turning it with excessive pressure can damage the system and even result in leakages.

The carbon steel gate valve is closed by turning it to the right gently.

Application of excess pressure when closing the carbon steel gate valve may cause it to bend, thus leading to permanent damage to the seal and seat.

What Are The Advantages And Disadvantages Of The Carbon Steel Gate Valve?

Some of the advantages of carbon steel gate valves include:

  • It requires little maintenance.
  • It can be utilized in vales that are bi-directional.
  • The costs of purchasing, installation, and functioning of carbon steel gate valves are relatively low.
  • Carbon steel gate valves are available in several size options.
  • They ensure shallow frictional loss because they possess a low-pressure drop.
  • Carbon steel gate valves offer good characteristics of shutting off.

Some of the disadvantages of carbon steel gate valves include:

  • Carbon steel gate valve cannot be utilized for throttling service.
  • It is difficult to carry out grinding and lapping repairs.
  • When the carbon steel gate valve opens partially, it may make noise and vibrations.
  • It takes a little longer in closing and opening due to the slow movement of its disk.
  • The carbon steel gate valve may be subject to wear of the seat and disk.
Which Are The Carbon Steel Gate Valve Medium?

The medium for carbon steel gate valve include:

  • Water, water treatment
  • Oil industries
  • Petrochemical plants
  • Refineries
  • Pipelines
  • Mining
  • Isolation applications
  • Gas services
  • Paper/pulp
  • Manufacturing
  • Chemical processing plants
  • Slurries with entrained solids, powders, and granules.
  • Cryogenic services
How Does The Bonnet And Trim Of Carbon Steel Gate Valve Compare?

The bonnet of a carbon steel gate valve possesses moveable parts, and it connects to the valve body.

It is removable from the body of the carbon steel gate valve to allow for easier replacement of parts and maintenance.

The trim of a carbon steel gate valve possesses the valve’s functioning units: the gate, stem, wedge, seat rings, and discs.

When Should You Use By-Pass Carbon Steel Gate Valve?

It would be best if you used a by-pass carbon steel gate valve for the following reasons:

  • When there is a delay in filling pipelines system
  • To allow differential pressure in pipelines to balance in a way that lowers the torque requirement of the valve. It will give a permit to operate by one man.
  • When the main valve is closed, the by-pass is open to allow a continual flow, eliminating the possibility of stagnation.
What Is The Difference Between Metal Seated Carbon Steel Gate Valve Vs Resilient Seated Carbon Steel Gate Valve?

Some of the differences between metal seated carbon steel gate valve and resilient seated carbon steel gate valve include:

Metal seated carbon steel gate valves possess a conical wedge design and sealing angular devices. They need a depression at the bottom of the valve for closing tightly.

The pipe system in the metal seated carbon steel gate valve always contains impurities as sand pebbles get embedded in the bore.

Due to this, the metal seated carbon steel gate valve loses the ability to be very tight over time.

Resilient seated carbon steel gate vale contains a valve bottom that is simply making way for sand and pebbles.

In case impurities pass through during the closure of the valve, the rubber surface closes around them while the valve remains closed.

Rubbers of high quality and regain their original shape can absorb any impurities during the closure of the valve.

When the valve opens, the impurities are flushed away.

How Do You Disassemble Carbon Steel Gate Valve?

Carbon steel gate valves tend to be screwed between two pieces of piping or to a wall.

It would be best to try unclogging the valve by putting water in the system before removing it.

It would help if you did this by turning on the water source at a very high rate, then open it and close it slowly till it reaches the end; this will make it possible to loosen some debris and allow for complete closure of the carbon steel gate valve.

If this does not work, turn off the water source and eliminate the valve from the pipeline. You will do this by removing screws from the ends.

Once the carbon steel gate valve is disconnected, you should use pliers to loosen its bonnet. However, please do not make the packing nut lose because it holds the components together and prevents leaks.

When you have removed screws from the bonnet, it will be possible to set apart the top of the carbon steel gate valve.

The top will also contain the seating and handle from the body.

You will now be able to clean the carbon steel gate valve very well from its top by using the cleaning tools of your choice.

Which Are The Common Stem Design Of Carbon Steel Gate Valve?

Standard stem designs of carbon steel gate valves include:

  • Rising stem: It is fixed onto the gate and can rise and lower during the operation of the valve. It provided a clear view of the position of the valve and enabled easy greasing of the stem.
  • Non-rising stem: It is threaded to the gate vales and can rotate as the wedge rises and lowers in the valve. It occupies little space vertically because the stem is located at the body of the valve.
Can You Automate Carbon Steel Gate Valves?

Yes, there are carbon steel gate valves that are automated as they have electrical actuators. However, they are not cost-effective.

Carbon steel gate valves that are automated are frequently used when it is difficult to access and operate gate valves.

Automated carbon steel gate valves use actuators extensively.

Which Codes And Standards Dictate The Design Specification Of Carbon Steel Gate Valve?

Some of the codes and standards that dictate the design specifications of carbon steel gate valves include:


  • API598 Valve Inspection and Testing
  • API600 Steel Gate Valves – Flanged and Butt-Welding Ends
  • API602 Compact Carbon Steel Gate Valves – Flanged
  • API603 Class 150 Cast Corrosion Resistant Flanged Gate Valves
  • API6D Pipeline Valves (Gate, Plug, Ball, and Check Valves)


  • B1.20.1 Pipe Threads, General Purpose (Inch)
  • B16.11 Forged Steel Fittings, Socket welding, and Threading
  • B16.25 Butt Welding Ends
  • B16.34 Valves – Flanged, Threaded and Welding End
  • B16.47 Large Diameter Steel Flanges, DN650 through 1500
  • B16.5 Pipe Flanges and Flanged Fittings


  • EN 558-1/2 Industrial Valves
  • EN ISO 10434 Steel Wedge Gate Valves (Flanged and Butt- Welding Ends) for the Petroleum, Petrochemical and Allied Industries (supersedes BS 1414)
  • EN ISO 10497 Testing of valves – Fire Testing (supersedes BS 6755-2)
  • EN 12266-1/2 Testing of valves – Production Pressure Testing (supersedes BS 6755-1)
  • EN 12627 Industrial Valves – Butt Welding Ends for Steel Valves (supersedes BS 2080)
  • EN ISO 15761 Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries (Supersedes BS 5352)
  • ISO 7-1 Pipe Threads Where Pressure-Tight Joints Are Made on the Threads – Part 1: Dimensions, Tolerances and Designation


  • SP-6 Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings
  • SP-25 Standard Marking System for Valves, Fittings, Flanges, and Unions
  • SP-42 Class 150 Corrosion Resistant Gate, Globe, Angle and Check Valves with Flanged and Butt Weld Ends
  • SP-53 Quality Standard for Steel Castings and Forgings for Valves, Flanges, Fittings, and Other Piping Components – Magnetic Particle Examination Method
  • SP-54 Quality Standard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components – Radiographic Examination
  • SP-55 Quality Standard for Steel Casting for Valves, Flanges, Fittings and Other Piping Component – Visual Method for Evaluation of Surface Irregularities
  • SP-61 Pressure Testing of Steel Valves
  • SP-70 Cast Iron Gate Valves, Flanged and Threaded Ends
  • SP-80 Bronze Gate, Globe, Angle and Check Valves
  • SP-81 Stainless Steel, Bonnetless, Flanged Knife Gate Valves
  • SP-82 Valves Pressure Testing Method
  • SP-84 Steel Valves, Socket welding and Threaded Ends
  • SP-93 Quality Standard for Steel Castings and Forging for Valves, Flanges, Fittings and Other Piping Components – Liquid Penetrant Examination Method
  • SP-94 Quality Standard for Steel Castings and Forging for Valves, Flanges, Fittings, and Other Piping Components – Ultrasonic Examination Method
How Does Carbon Steel Gate Valve Vs Ball Valve Compare?

Carbon steel gate valve compares to ball valve in the following ways:

  • Working principle: The carbon steel gate valve controls the valve by using its gate so that when lifted, total flow is allowed and vice versa. Ball valve contains a ball that has an opening which, when lined up with the pipe by turning the control lever, fluids pass.
  • Weight: ball valves tend to weigh more than carbon steel gate valves.
  • Cost: Carbon steel gate valves are relatively affordable as compared to ball valves.
  • Turning of lever or handwheel: The carbon steel gate vale turns the lever or handwheel in a multi-turn, while the ball valve uses a quarter-turn.
  • Shut off capabilities: Ball valves exhibit better shut off capabilities compared to carbon steel gate valves.
  • Surge probability: Carbon steel gate vales have less probability of water hammer because their operation is slow. Ball vales are highly prone to the creation of a surge of water hammer.
  • Variation probability: In a carbon steel gate valve, vibrations may come about if the gate is open partially, while ball valves exhibit minimal vibrations.
  • Operating space requirement: Ball valves required more operating space as compared to carbon steel gate valves.
What Is An OS &Y Gate Valve?


OS&Y Gate Valve

The operation of OS and Y is by opening and closing through a gate valve that arises out of or lowers into the valve.

Raising the gate valve enables water to flow via the valve, and gate cuts are eliminated from the water flowing via the valve.

The OS and Y gate valve is attached to a threaded stem with a handle that links to the yoke element. When the handle rotates counterclockwise, the stem raises the handle and opens the gate.

When rotated clockwise, the stem moves back, and the valve will close. The gate valve is closed fully when the stem is not protruding beyond the handle.

Can You Throttle Carbon Steel Gate Valve?

Because carbon steel gate valves tend to valve for isolation, they need to be either fully closed or fully open.

They must not be used to regulate the flow of water thus are not suitable for throttling a flow.

When a carbon steel gate valve is used in such a case, vibrations can result from turbulent flow rates via the valve body.

It may damage the seat and wedge, eventually causing leakages in the carbon steel gate valve.

What Are Some Of The Maintenance Guidelines For Carbon Steel Gate Valve?

Some of the maintenance guidelines for carbon steel gate valves include:

  • You should cycle the carbon steel gate valve at least once a month if it is not used regularly.
  • Replace the valve’s gate by removing the bonnet and stem, then screwing the gate out to replace the new element.
  • Before carrying out any maintenance on the carbon steel gate valve, you should remove the pressure in the system.
Which Are The Important Considerations During Operation Of Carbon Steel Gate Valve?

Some of the essential considerations during the operation of carbon steel gate valve include:

  • It would help if you never let the carbon steel gate valve function at a pressure higher than its working pressure.
  • If the carbon steel gate valve is jammed in between open and closed positions, inspect its seat and face. You should remove it and inspect if there are any foreign objects.
  • The internal parts of the carbon steel gate valve get destroyed by excessive torque emanating from actuators.
What Is The Role Of Pressure-Equalization Connection In Carbon Steel Gate Valve?

The pressure equalization connection links the chamber of the valve to piping that is upstream. It is used in carbon steel gate valves that handle fluids with high thermal expansion.

When the carbon steel gate valve operates, thermal expansion of trapped fluids forcer disks collide. The upstream and downstream disks might come into very close contact with their seats, making pressure in the carbon steel gate valve rise.

It may result in leakages in joints and bonnets due to higher seating stress if pressure equalization connection is not utilized. Pressure equalization connection is granted by internal or external means or a hole in the disk located upstream.

How Much Does A Carbon Steel Gate Valve Cost?

The price of carbon steel gate valve tends to range between $500- $2000 depending on several factors such as:

  • Design of the carbon steel gate valve
  • Sizing of the actuator
  • Method of installation
  • Accessories required

At Kinvalve, we design and manufacture a range of carbon steel gate valves.

We can also support your OEM business – contact us now for all your carbon steel gate valves.

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