Gate Valve

The Gate Valve Manufacturer!

We-SQ Technology is a specialized industrial valves supplier and exporter in Wenzhou,China, focus on supplying integrated solutions for industrial valves which are applied broadly in petroleum, chemical, metallurgical power generation, mining and water treatment industries.

API Gate Valve

Gate valves are designed for fully closed and fully open service and are used as isolating , control or regulating valve.

Add to Inquiry
Pressure Seal Gate Valve

A complete range of gate, globe, and check valves for all of your high pressure and high temperature applications, proven over years of service in conventional thermal and nuclear power plants as

Add to Inquiry
Ceramic Lined Gate Valve

Ceramic Lined Gate Valve mainly has two types of structure, bolted bonnet type for low pressure ratings and pressure seal bonnet for higher pressure.

Add to Inquiry
DIN Resilient seat gate valve

The body and bonnet are manufactured from ductile iron castings. It is resistant to high tensile stress occurring in pipelines.

Add to Inquiry
API6A Gate Valve

SQ manufactures various types of API 6A valves suitable for the demanding environments of onshore and offshore drilling and production, including large-bore completions; pressure and temperature

Add to Inquiry
Bellow Sealed Gate Valve

Bellows sealed gate valve is applicable to the cutting and connection of pipelines medium that are used in various industries such as petroleum, chemical industry , pharmacy, chemical fertilizer,

Add to Inquiry
flat gate valve

The flat gate valve can be offered with soft seat or metal seat. The floating slab gate uses the natural force of line pressure to obtain a dynamically tight downstream seal in high-pressure

Add to Inquiry

Why Choose Us

Our certificates

We launched our quality management as ISO 9001, and awarded API 6D,API 600, API 607,CE/PED approvals for the products .And we are making continuous improvement on our product performance and quality control all the time.

Dedicated Customer Service

Our customer service team is committed to providing exceptional support and addressing any concerns promptly. We prioritize clear communication and proactive problem-solving to ensure a seamless experience for every client.

Versatility in Applications

One of the key advancements in industrial ball valves is their increased versatility. These valves are now designed to handle a diverse range of applications, from general-purpose use to specialized industries such as petrochemicals, oil and gas, water treatment, and more. Their adaptability makes them a go-to solution for various industrial fluid control needs.

The Main Advantages of Gate Valves

Gate Valves Have Low Fluid Resistance

The gate valve's body is a straight-through shape that does not alter the flow direction, allowing fluid to pass through the valve (when in the fully open position) with minimal resistance compared to other types of valves.

Gate Valves Provide Superior Sealing Performance

Gate valves provide better sealing performance than shut-off valves. The gate valve's opening and closing mechanisms are faster and more convenient than those of the shut-off valve.

Gate Valves Have a Wide Application Range

Gate valves are extremely versatile and can be used in applications with mediums like steam, oil, and other media. Plus, gate valves can be used in mediums containing granular solids and with high viscosity. It can also be used as a venting valve and a low vacuum system valve.

Gate Valves are Bidirectional

Gate valves have dual flow directions. They're not limited to one-way flow, nor are they subject to the flow directions of the medium. Therefore, gate valves are suitable for use in pipelines where the flow direction may change. Plus, they are easier to install than other more sophisticated types of valves.

Material used for Gate Valve

Gray Cast Iron (FC200)
Gray Cast Iron is used mainly for valves in relatively low pressure and temperature service. It is used in applications from kitchen utensils to art pieces.

Nodular Graphite Cast Iron (FCD450-10) and Ductile Iron Castings (FCD-S)
This metal is increasingly in demand, as it conveniently combines the excellent machinability characteristic of cast iron that is comparable to copper. Because of this toughness, it is also called ductile cast iron.

Carbon Steel Castings for High Temperature/ Pressure Service (SCPH2)

Carbon steel is tough and has excellent hardness, tensile strength, and impact value. It is commonly used in industrial plants for high temperature and pressure applications

Stainless Steel Castings (SCS13A, SCS14A)

Although comparatively expensive stainless steel has superior corrosion resistance, heat resistance, low-temperature resistance, and excellent mechanical properties.

Bronze (CAC401, CAC406) and Brass (C3771)

Bronze is an alloy of copper to which tin, zinc, and lead are added to perceive particular physical properties. Brass is an alloy of copper and zinc. Both alloys have excellent machinability and corrosion resistance and are used for relatively small valves in low-pressure service.

Types of Gate Valves

Rising Stem

In the rising stem valve, the stem rises out on the opening of the valve. We can judge the valve opening or closing from the appearance of the valve stem. The valve stem nut is in the valve bonnet or housing when the valve is fully closed. The stem rotates to lift (gate open) and lower (gate close).

Non-Rising Stem

Non-rising stem means external stem. We also call it a rotational stem design gate valve. The stem rotates to open and close the gate but, the stem does not move up or down as it rotates.

Parallel Slide Gate Valve

Parallel slide gate valves can be divided into a single and a double gate. In parallel slide construction, as shown in the above figure, the sealing surface is parallel to the vertical centerline. It has an upper and bottom sealing parallel to each other.

Wedge Gate Valve

It has a wedge-type construction. It has an up and down gate operation for opening and closing.The wedge gate valve can be classified into single, double & flexible gate types. The sealing surface of the gate valve forms an angle with the vertical centerline. Here, the two sealing surfaces form the shape of a wedge.

Application of Gate Valve

Water Works Wonders
Water treatment plants rely on gate valves for the simple reason that they work well with water. Here, gate valves start or stop water flow during treatment processes.

Energy and Power Provision
In the energy sector, gate valves take on a pivotal role. They are often found in oil and gas pipelines, controlling the movement of these high-value resources.

Manufacturing Might
In manufacturing, whether food and beverage, pharmaceuticals, or automotive production, controlling the flow of liquids and gases is part of the daily operation. Gate valves fit perfectly into systems where a complete cessation of flow is required to ensure quality and safety during production runs.

HVAC and Beyond
Heating, ventilation, and air conditioning systems (HVAC) utilize gate valves to control heating and cooling fluids. The gate valve's ability to operate without causing significant pressure drop is a preferred choice in these systems for keeping our environments comfortable.

Marine Marvels
On the high seas, gate valves are unsung heroes in the marine industry. They manage the flow of seawaseawater flownes, ballasting, and even fire protection systems on ships. The valves must resist corrosion from salty water, a testament to the versatility in materials and design that gate valves offer.

Fire Fighting's Frontline
In fire protection systems, the ability to control water flow swiftly and decisively can be the difference between a minor incident and a major disaster. Gate valves ensure that water reaches the right places at the correct times, which makes them invaluable in this high-stakes industry.

Agricultural Applications
The agricultural industry uses gate valves in irrigation systems. They help regulate water supply to fields and ensure crops receive the right amount of water without waste, a critical factor in sustainable agriculture.

FAQ

Q: According to the materials used, how often do gate valves need maintenance?

A: Several maintenance procedures may be needed depending on the material and the working circumstances. To ensure the continuing dependability of gate valves, thorough inspection, lubrication, and periodic replacement of sealing elements are standard maintenance chores.

Q: Can the materials used in gate valves affect how much they cost?

A: Yes, the materials chosen can significantly impact how much gate valves cost. More expensive than common materials like cast iron or carbon steel may be exotic or unique materials. However, the long-term performance advantages might justify the higher initial cost.

Q: Are there industry standards or recommendations for choosing gate valve materials?

A: Yes, there are several industry standards and guidelines that offer suggestions and requirements for gate valve materials in particular applications. Examples include those offered by groups like the American Society of Mechanical Engineers (ASME) and the American Petroleum Institute (API). You must follow specific criteria for the sake of compliance and safety.

Q: Are gate valves good for throttling?

A: No. Gate valves should not be used for throttling or flow regulation. Their fluid passageway shape creates turbulence and vibration that can damage parts. Needle, globe, butterfly, and other rotary control valves are better for throttling services.

Q: Can gate valves be operated partially open?

A: It's not recommended. Partially opening gate valves increases wear and potential failure over time. For optimal service life, gate valves should only be operated fully open or closed.

Q: What is the main purpose of a gate valve?

A: The primary use of gate valves is for isolation – starting and stopping flow. Their tight shutoff and full bore design specifically suits them for blocking in sections of pipe networks.

Q: Why choose gate valves over ball valves?

A: Gate valves are chosen over ball valves when an economical solution allowing full, unobstructed flow is needed. Ball valves generally cost more and have slightly higher pressure drops than full port gate valves.

Find professional gate valve manufacturers and suppliers in China here. We're offering high quality gate valve with competitive price. Welcome to contact our factory for more details.

mining check valve, ball valve accessories, plumbing ball valve