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gate valve manufacturers

Gate Valve Manufacturers

LUCKY6S valve manufacturer customizes high-quality gate valves for different applications. These valves are mainly used for stopping and starting fluid flow.

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LUCKY6S manufactures high-quality gate valves that may be customized for a variety of applications. These valves are primarily used to stop and start the flow of fluid. They’re also used when a straight fluid flow is essential, as well as when the least amount of flow restriction is required. In most cases, these valves are either entirely open or completely closed.

When the gate valve is fully open, the disk is completely withdrawn. The fluid going through the gate valve will now have an opening. There will be no obstruction, resulting in minimal friction loss. When closed, this sort of valve is beneficial in a variety of fluids and guarantees a steady seal.

For all of your fluid flow needs, you can rely on the LUCKY6S valve manufacturer to produce the most efficient gate valves.


The gate valve is also called a sluice valve, is one of the most common valves seen in industrial settings. Its primary function is to regulate the flow of a process fluid. It comes with a gate, which is a flat closure component that slips into the line to restrict flow.

Slurries and other viscous materials, such as grease, heavy oil, milk, molasses, and others, can be cut through with the right gate valve. It works effectively in liquid applications such as the oil and gas industry, water and wastewater treatment plants, medicines, and power plants.

A gate valve comes in a variety of sizes to manage differing amounts of process flow. It can also be manufactured from a variety of materials and have a variety of design elements and possibilities. This makes deciding which sort of gate valve is best for your application challenging.

We’ve divided gate valves into several sorts because selecting the proper one can be difficult. This will assist you in determining which gate valve will give you with the best performance.

Guide for choosing the Right Gate Valve

It is critical to assess the needs of your application before purchasing a gate valve. This will ensure that your gate valve is dependable, efficient, and long-lasting. Here are some crucial elements to think about while selecting a gate valve that will last a long time:


The parameters of the process flow have a significant impact on the entire working system, including the operation of a gate valve. To guarantee that you are utilizing the correct gate valve, you must first identify these features. The following are some of the things to think about:
• Determine whether the process media and the materials of the gate valve and other system elements are capable of causing a chemical reaction.
• The abrasiveness or corrosiveness of the process fluid;
• Chemical reaction between the medium and the valve and other system components is a possibility.

Function and Operation

Because a gate valve can be used for a variety of purposes, it’s critical to understand how it works and how it works. This will assist you in determining which type of gate valve is best for your application.
Is the gate valve, for example, required to control or release system pressure? What is the maximum amount of leakage that the system can handle? How precise should the gate valve’s process flow control be? These questions will assist you in selecting a gate valve that is both reliable and safe.


A gate valve’s shut-off feature is also beneficial for regulating hot and cold fluids. It’s also crucial to figure out what the temperature of the process flow is. This will assist you in selecting the appropriate gate valve manufacturer. Gate valves are made of a variety of materials, including stainless steel, carbon steel, cast steel, carbon steel, and others. Each of these materials is well-suited to a certain range of temperatures.


The Pressure in the System A gate valve’s shut-off function is designed to withstand a variety of fluid pressures. You must first determine the pressure range that will pass through the gate valve. This allows you to select the appropriate size and maximum pressure capacity for the job.


When selecting a gate valve, keep in mind how it interacts with the rest of the system. A small gate valve, for example, is suitable when there is little workspace but it cannot tolerate greater pressures that may be present in the application.


Cleaning and maintenance must also be considered because they have an impact on the working system’s performance. Is the gate valve conveniently accessible and cleanable? How often should the gate valve be serviced? Answering these questions will help you assess if a gate valve is appropriate and practical for your overall system.

Specific Requirements

Other specific requirements for gate valves may be specified by the application, and the industry may require them to meet certain standards. Some applications, for example, have stringent hygienic criteria and noise level limitations. These considerations influence the type of gate valve you select for your application. The following information will be included in other specifications.

Wedge Style

The wedge design is critical since it is the gate valve’s sealing component. You must consider the following factors when doing so:

Wedge nut
This piece connects the wedge with the stem and comes in two basic styles:

Loose wedge nut design – A brass nut moves into a hole in the wedge core in this design.

Fixed wedge nut – A fixed wedge nut has a nut that expands within the wedge core.

Some moveable pieces can no longer be moved due to this design. This eliminates the possibility of corrosion, which could occur as a result of moving components damaging the rubber’s surface.

Guides and wedge shoes

When the gate valve opens and closes, the wedge is constantly subjected to stress and friction. The wedge is stabilized by wedge guides that match to grooves in the valve body. This also prevents the stem from leaning downstream due to the flow velocity.

Meanwhile, wedge shoes prevent traction between the guardrail and the wedge in the valve body from wearing out the rubber on the wedge’s surface.

Rubber The wedge must be hardened with rubber to ensure the tightness of the gate valve. Furthermore, the rubber volume on the wedge’s sealing surface must be sufficient to absorb pollution in the seat.

Even when the rubber is squeezed, a strong bond between the wedge core and the rubber is required to ensure adequate sealing. Even if pointed elements pass through the rubber when the gate valve closes, this prevents rusting.

Gate valve Rubber Quality

The durability and optimal function of a gate valve are dependent on the rubber quality. The rubber should be able to withstand the impacts of chemicals and impurities for an extended period of time without becoming degraded. To guarantee good sealing, it should also absorb tiny impurities in the valve seat.

Keep the following in mind when inspecting rubber quality:

Compression set

This refers to the rubber’s capacity to return to its original state following compression. When the compression set is of good quality, the rubber has a greater ability to return to its original state. It will also provide a long-term, 100 percent positive seal.

Biofilm formation

Organic compounds may migrate from the rubber material and offer nourishment to microorganisms when used for water treatment. This could result in biofilm growth, which could contaminate drinking water. Choose a gate valve with a wedge rubber to reduce the growth of biofilm.

Chemical resistance for water treatment applications

Chlorine-based chemicals are commonly used to clean and disinfect pipes. They’re also used to ensure that drinking water is safe. The rubber material must not fracture or degenerate as a result of the water’s chemical treatment.

Drinking water approval

All rubber products that come into touch with water must be approved as safe to consume. Rubber products that come into direct contact with drinking water must have major approvals, such as KIWA and NSF/ANSI/CAN 61, if no local approvals are necessary.

External Protection From Corrosion

The gate valve’s longevity is dependent on its ability to resist corrosion from the outside. An even distribution of epoxy coating in line with DIN 3476 part 1 and EN 14901 is strongly recommended. It must also include the following:

Layer thickness
A minimum of 250 m is required in all regions

Impact resistance
A one-meter tube releases a stainless steel cylinder onto a coated surface. After each collision, the component must be electrically checked. After the test, there should be no electric breakthrough.

Blast cleaning
The ISO 12944-4 standard must be followed for blast cleaning.

MIBK test
A MIBK test or a cross-linkage test should be used to check the treatment of epoxy coatings. A component is given a drop of methyl isobutyl ketone. The test component is wiped with a white cloth after thirty seconds. The test area should not be smeared or matted, and the cloth should remain clean.

Tight Construction

There are two key design elements to consider:

Body/Bonnet sealing

A gasket inserted in a recess in the gate valve ensures tightness between the body and the bonnet. This construction ensures that the gasket remains in the appropriate place and does not blow out due to pressure surges.

The gasket must encircle the bonnet bolts to protect them from corrosion. The bolts must also be inserted in the gate valve in such a way that the threads are hidden from view.

 Stem sealing

Stem sealing must be maintenance-free and last the lifetime of the gate valve or meet the EN 1074-2 service life criteria.

A hydraulic seal is advised for the primary seal that holds internal pressure to offer a tighter seal during a surge in internal pressure. A sealing must be put around the top of the stem to prevent the sealing from contamination. Furthermore, backup seals surrounding the stem must be placed.

General Performance

When operating a gate valve manually or automatically, it’s critical to keep track of the operating and closing torques.

Operating torque

The torque necessary to operate a gate valve from an open to a closed state must be between 5 Nm and 30 Nm, depending on the valve size.

It’s important to keep in mind that a gate valve with a maximum operating torque of 5 Nm encourages the valve operator to close the gate valve rapidly. This could cause pipeline pressure surges and water hammer.

Closing torque

To close a gate valve to a bubble-tight position, you’ll need this amount of torque. When the valve is handled manually, it should be against the diameter of the handwheel such that the operator does not experience more than 30 to 40 kg of lateral force.

When the actuator is operated, the torque should be within the actuator’s limitations. Keep in mind that actuators usually have a large torque range. The ISO flange connection, on the other hand, usually dictates the type of actuator utilized.

In general, gate valves with ISO flange connections must have the following maximum closing torques:

F-16 ISO Flange – maximum 1000 Nm

F-14 ISO Flange – maximum 500 Nm

Flange F-10 – maximum torque of 120 Nm

LUCKY6S Supply The Different Types of Gate Valves

Gate valves are mainly used to provide tight sealing in a variety of industrial applications. However, there are many types of gate valves that differ in materials, pressure and temperature ratings, valve operator, etc. Lucky6s provides below gate valves for all your applications.

Gate Valves classified by Material

Stainless Steel Gate Valve

Because of its longevity and excellent resistance to abrasion and corrosion, stainless steel gate valves are widely utilized. It’s ideal for a variety of industrial applications involving harsh operating conditions. Extremely high pressures and temperatures, extremely low pressures, cryogenic temperatures, chemicals, and other corrosive media are only a few examples.

A stainless steel gate valve can manage varied qualities of media flow due to its improved strength and tolerance to various chemicals. High viscosity, mixed particles, slurries, and other fluids are examples. It also has a long service life and can assure a positive shut-off.

Forged Steel Gate Valve

The forged steel gate valve is a valve manufactured from a carbon and iron alloy that has been squeezed under high pressure. The gate valve is made of forged steel, making it sturdy and suitable for a wide range of industrial applications.

Forged steel gate valves are suited for high-pressure and high-temperature applications due to their increased strength. They’re commonly found in the oil and gas industry, as well as water and wastewater treatment facilities and power plants.

Cast Steel Gate Valve

The cast steel gate valve is constructed out of multiple types of steel, providing added strength and stress resistance. A cast steel gate valve undergoes a process in which metals are molded and solidified from their liquid condition to form valve components. As a result, cast steel gate valves are adaptable and can be customized to fit individual needs.

A gate valve made of cast steel also has a higher temperature tolerance, making it suitable for a wide range of pressure and temperature applications. Pipelines, oil refineries, chemical and petrochemical factories, and water and wastewater treatment plants are all popular places to find this sort of gate valve.

Carbon Steel Gate Valve

Carbon steel gate valves are comprised of either cast or forged carbon steel. Carbon steel has improved mechanical properties, which is one of its main advantages. This makes this valve type extremely stress, corrosion, and sulfide resistant.

Carbon steel gate valves have a high tensile strength, which is another advantage. This means it’ll work effectively in high-pressure utility applications like steam, gas, and water. Petrochemicals, oil and gas, wastewater treatment, and power generating are some of the other industries that use carbon steel gate valves.

Gate Valves classified by Bore Size

Reduced Port / Reduced Bore Gate Valve

The term “reduced port gate valve” refers to a gate valve with a narrower opening than the pipe’s diameter. The gate valve has a straight flow route, which makes it more limited on the inside. The key benefit of a reduced port is its low cost and small size.

This type of gate valve, also known as a reduced bore gate valve, is commonly employed where an increased pressure drop is not a problem. It’s also employed when the size of the valve and the expense of the operation are critical.

Full Port / Full Bore Gate Valve

A full port gate valve is one that has an opening that is the same diameter as the pipeline it is installed in. It allows for unlimited flow and is ideal for applications requiring both open flow and tight sealing.

In applications requiring low flow resistance, a full port gate valve is frequently employed. It’s also employed in processes with mixed liquids and solids, where flow constraints might cause the components to separate, causing accumulation or blockage.

This valve type, also known as a full bore gate valve, has low friction loss, low-pressure drop, and maintains flow rate uniformity. These qualities aid in the maintenance of the gate valve’s integrity, extending its service life.

Gate Valves classified by Body Bonnet Joint

Screwed Bonnet

The simplest design is a screwed bonnet, which is commonly used for low-cost valves.

Bolted Bonnet

The most well-known design is a bolted bonnet, which is extensively employed in big and high-pressure gate valves. A gasket is required to seal the junction between the bonnet and the valve body in this design.

Welded Bonnet

Another popular form that does not require disassembly is a welded bonnet. When compared to its bolted bonnet equivalent, it is lighter.

Pressure-seal Bonnet

For high-pressure and high-temperature applications, a pressure-seal bonnet is frequently employed. In a pressure-seal gate valve, the stronger the strain on the gasket, the higher the pressure in the body cavity.

Gate Valves classified by Disc Type

Flexible Wedge Gate Valve

The flexible wedge disc is a one-piece solid disc with a cut around the frame. The shape, depth, and size of the cut vary. The wedge frame has a shallow cut that gives restricted flexibility but considerable strength. A deeper wedge frame cut, on the other hand, provides more flexibility but less strength.

A flexible wedge shape improves seat alignment and seals leaks better. In applications where thermal binding is possible, it also increases performance. Thermal binding is typical in steam-handling applications that need a higher torque. A flexible wedge gate valve is useful for steam pipelines and related applications because of this.

Solid Taper Wedge Gate Valve

Because of its simplicity and longevity, the solid taper wedge valve disc is the most often utilized disc type. A solid taper wedge gate valve can be fitted in any location. It can handle practically any fluid type, including turbulent flow.

Split Disc Gate Valve

The split disc is made up of two solid pieces that are held together by a unique mechanism. One-half of the disc is out of alignment in this mechanism. This allows the disc to conform to the seating surface freely.

Even when the gate valve is closed and the process line is cold, the disc’s freedom of movement avoids thermal binding. This means that when a line is heated by a process fluid and expands, thermal binding does not occur.

A parallel or wedge-shaped split disc can be found:

Gate Valve with Parallel Discs
A spring-loaded parallel disc is always in contact with the valve seat, providing bi-directional sealing.

Gate Valve with a Split Wedge Disc
At normal and high temperatures, a split wedge disc is well-suited for handling non-condensing liquids and gases.

Gate Valves classified by Stem Movement

OS & Y Type or Rising Stem (Outside Stem and Screw Type)

A rising stem gate valve, also known as an outer stem and yoke (OS & Y) valve, has a stem that rises when the valve is opened and descends when the valve is closed. Because the smooth portion of its stem is exposed to the media flow, it will rise over the handwheel. This means that when the valve is open, both the stem and the disc are removed from the flow channel.

Non-rising Stem Type

The stem of a non-rising stem gate valve does not travel upward from the valve bonnet, regardless of the valve’s position. When the stem rotates, the valve disc, which is threaded inside, travels along the stem like a nut. The stem threads are exposed to the flow medium in this configuration. As a result, it’s commonly employed in applications with limited areas.

This valve, also known as an inside screw valve, is suited for process media that does not cause the stem material to corrode, erode, or wear & tear.

Gate Valves classified by End Connection

Butt-weld Gate Valve

The gate valve with a butt-weld end connection is known as a butt-weld gate valve. This connection style is constructed such that each end of the gate valve is slanted to fit the pipe’s bevel and thickness. The two ends are then “butted” to the pipe and soldered together. Steel gate valves frequently use a butt-weld connection.

The improved strength of a butt-weld gate valve makes it suited for high-pressure and high-temperature applications.

Flanged End Gate Valve

The gate valve with flanged end connections is known as a flanged end gate valve. This is one of the simplest connections to install and/or remove in a pipeline. As a result, it is the most frequent connection found on industrial valves.

To secure the gate valve to the pipe flanges, a flanged end connection is connected with numerous bolts. When compared to other connection types, this design allows the gate valve to be tightened with less torque. Flanged end connections can be utilized in other valves besides gate valves, such as ball valves.

Gate Valves classified by Seat Type

Metal Seated Gate Valve

The metal seated gate valve is suited for applications where the wedge is kept fully open or closed and irregular actions are required. It has a long lifespan and is noted for its resilience and flexibility.

A metal seated wedge is employed in this sort of gate valve to isolate flow in a pipeline or equipment. To achieve a positive shut-off, the valve’s conical wedge design and angular sealing components necessitate a depression at the bottom. Irrigation systems, stormwater systems, and wastewater treatment systems all use it.

Resilient Seated Gate Valve

The gate valve with a ductile iron wedge gate is known as a resilient seated gate valve. A protective coating, such as Polyurethane or EPDM rubber, is applied to the whole gate. Different end connectors, such as flange by flange and flange by groove, can be used.

The advantage of a resilient seated gate valve is that it has a low working torque, which extends the valve’s service life. Water and wastewater treatment plants, chemical and petrochemical facilities, power generation, and the oil and gas sectors all employ it in high-pressure and high-temperature applications.

Gate Valves classified by Condition

High-pressure Gate Valve

In high-pressure applications, a high-pressure gate valve is specifically designed to provide tight sealing. It’s made of long-lasting materials including stainless steel and forged steel. The gate valve will be able to survive tough conditions and have a long service life as a result of this.

This gate valve has a pressure seal bonnet, making it appropriate for high-pressure applications, especially those above 2250 psi. The bonnet is positioned downward and fits inside the valve body, which is a unique feature of this design. As the internal pressure rises, this design improves the bonnet-body seal, assuring leak-free running.

A high-pressure gate valve is commonly employed in applications that require extreme reliability. Chlorine production, hydrocarbon processing, oil refineries, wastewater treatment plants, and other industries are among them.

High-temperature Gate Valve

The high-temperature gate valve is designed to withstand temperatures of up to 750 degrees Fahrenheit (400 degrees Celsius) in a variety of industrial applications. Carbon steel, stainless steel, duplex, super duplex, and Inconel are among the materials used.

This sort of gate valve can handle corrosive media, vacuum, high viscosity, and high pressure in addition to high temperatures. When dealing with mixed solids and liquids, slurries, and other viscous components, it is widely utilized.

A high-temperature gate valve is employed in practically every industry because of its high tolerance to varying pressures and temperatures. Chemical and petrochemical industries, as well as petroleum plants and electricity-generating, are only a few examples.

Cryogenic Gate Valve

A cryogenic gate valve is intended specifically for industrial applications that require extremely low or cryogenic temperatures. Stainless steel, cast steel, and carbon steel are commonly used. It has an expanded hood to keep the stem packing effective while keeping it away from the extremely cold fluid. This also provides a warmer vapor zone, which protects the stem seal from the impacts of cryogenic temperatures.

In applications involving compressed natural gas (CNG), liquefied natural gas (LNG), and ethylene, a cryogenic gate valve is frequently employed. It’s also utilized in gas production plants, low-pressure trailers, and tank services, among other cryogenic uses.

Gate Valves classified by Operator

Manual Gate Valve

A manual gate valve is a hand-operated valve that opens and closes media flow using a wheel or gear. Stainless steel, carbon steel, brass, cast iron, and some types of plastic are used to construct it.

A manual gate valve is typically strong and is frequently utilized in high-stress situations. It allows for precise process flow blocking and release. It also enables the operator to simply control the media flow when needed.

Because the velocity is modest, utilizing a manual gate valve results in a low pressure drop and reduces the danger of system wear. Furthermore, because the operator may directly control the flow, it generates a high flow capacity.

Cryogenic Gate Valve

Actuators can be used to automate the operation of a gate valve. The key benefit of employing an automatic gate valve is that it ensures the operator’s and the system’s safety.

Gate Valve with Pneumatic Actuator
A pneumatic actuator gate valve is a type of valve that converts compressed air to mechanical energy using a pneumatic actuator. A pneumatic actuator is absolutely safe and reliable because it is powered by air. HVAC systems, plumbing, chemical applications, and other industrial services all require pneumatic actuator valves.

Gate Valve with Electric Actuator
The term “electric actuator gate valve” refers to a gate valve that is controlled by an electric source. A gate valve with an electronic actuator can open and close slowly, considerably minimizing the risk of water hammer. Because it is non-toxic, safe, quiet, and efficient, this type of actuator is frequently employed in industrial applications.

LUCKY6S Is Ready to Be Your Best Gate Valve supplier


One of the most important aspects for a distributor when looking for Knife Gate Valve is ensuring that they are of high quality. At LUCKY6S, we’ll make sure you get the best quality at a low price to give you a competitive advantage.

Equipment Manufacturer

Ball valves are used in a variety of machines to aid in their applications and ensure accurate performance.
We strive to provide high-quality ball valves on which you can rely and use to ensure that your equipment is well-developed.


Our ball valves are designed to meet all of our customers’ needs and to ensure that they are working with the best on the market. If you’re looking for high-quality ball valves, you can rest assured that we’ve got you covered.


It can be difficult to import high-quality ball valves when there is no guarantee of product quality. However, at LUCKY6S, we offer free samples as well as fast shipping services to ensure that your ball valves arrive on time and in perfect condition.

Engineering Company

Finding quality ball valves to assist you in your processes is critical as an engineering firm. This enables you to cater to systems that rely on ball valves to function correctly. We provide high-quality options to ensure that you receive the best service possible.

Why buy Gate Valves from LUCKY6S

Quality Assurance

Our high-pressure ball valves are designed to be of high quality and to easily meet the needs of our customers. We work with certified manufacturing systems to ensure that all of our products meet your requirements.

Free Samples Are Available

Customers who want to invest in bulk or custom orders can get a free sample from us. This gives you a better sense and understanding of the exceptional quality we provide. Consider this option if you are looking to invest in high-pressure ball valves.

Flexible Payment

Our payment methods are designed to be adaptable in order to meet the needs of all of our customers. This option enables us to provide you with incredible options while also ensuring that we provide quality ball valves with which you can work.

Support for Full High-Pressure Ball Valve

We value long-term relationships with our clients, which is why we continue to foster them by collaborating closely with you to provide assistance. If you have any concerns, we are here to assist you in addressing them and ensuring that you are able to use our ball valves.

Contact us

LUCKY6S is Chinese leading manufacturer and supplier of industrial valves. which has over ten years of experience in manufacturing high-quality industrial valves, focuses on delivering safety, efficiency, and cost-effectiveness to every industry that requires automation. We are committed to supplying premium industrial valves and equipment to distributors, importers, and project managers worldwide. 






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