Your Professional Gate Valve Supplier
Tiansu (Tianjin) Valve Group Co., Ltd is a comprehensive, technology-based enterprise integrating valve research and development, production, sales, and after-sales service. The company primarily develops, manufactures, and sells various types of valves for natural gas, fully welded ball valves, carbon steel ball valves, HVAC-specific valves, fire protection valves, water supply and drainage valves, and water conservancy control valves, among other series of products.
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![Rising Stem Gate Valve]()
Rising Stem Gate ValveA flanged rising stem gate valve serves as a key shut-off device in industrial pipelines. It is manufactured in various specifications, a common example being the 4 flanged gate valve configuration. -
![Non Rising Stem Gate Valve]()
Non Rising Stem Gate ValveThe closure member of a gate valve is a gate, which moves perpendicular to the fluid flow. A stem gate valve is designed solely for full open or full close operation, not for regulation or -
![Mechanical Locking Gate Valve]()
Mechanical Locking Gate ValveA lockable gate valve is a specialized valve built upon a standard gate valve by adding a mechanical locking mechanism. Its core function is to restrict valve operation via a physical lock, -
![Grooved Rising Stem Gate Valve]()
Grooved Rising Stem Gate ValveThe grooved gate valve controls fluid flow by raising or lowering a gate. Rotating the handwheel clockwise drives the stem via threads to lower the gate until it seals against the seat, blocking -
![Grooved Signal Gate Valve]()
Grooved Signal Gate ValveA signal gate valve adds an electrical signaling function to a standard grooved gate valve. Its primary functions are to start/stop fluid flow and transmit the open/closed status. The stem drives the -
![Rising Stem Flanged Gate Valve]()
Rising Stem Flanged Gate ValveThe carbon steel flanged gate valve is a common shut-off valve in industrial pipelines. It uses carbon steel for the body, a flanged connection, and a rising stem design. Valves like the carbon steel -
![Metal Seated Gate Valve]()
Metal Seated Gate ValveA metal seated rising stem gate valve is a manually operated, flanged, wedge-type rigid single gate valve. Key components include the body, bonnet, gate, and stem, typically manufactured from -
![Resilient Seat Gate Valve]()
Resilient Seat Gate ValveModel Z41X-16P is a flanged, resilient seated sluice valve. The body is made of stainless steel, and the sealing surface consists of a ductile iron gate fully encapsulated in rubber. The nominal -
![Stainless Steel Flanged Gate Valve]()
Stainless Steel Flanged Gate ValveThe stainless steel gate valve model Z45X-16P offers reliable sealing, excellent corrosion resistance, and a compact design, serving effectively in water supply, wastewater, construction, and
Why Choose Us
Production Market
Our products are centered in Tianjin and radiate to all parts of China. They are exported to multiple countries and regions, forming a challenging global marketing network.
Quality System
The company consistently implements the ISO9001 quality management system strictly, and implements quality control throughout the full process from market research, product design and development, raw material purchase, processing and assembly, factory inspection, to after-sales service.
Excellent Quality, Wholehearted Service
Our Based on customers' personalized and high-quality needs, we continuously improve and enrich our product offerings to provide customers with more comprehensive and high-quality services.
Core Values
We persistent pursuit of goals, strong team spirit, strong execution ability to keep one's word, and a full spirit of service.
Advantages of Gate Valve
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.
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Product Name |
Gate Valve |
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Keywords |
Carbon Steel Gate Valve |
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Nominal Pressure |
150-2500Lb |
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Nominal Diameter |
3/4”~42”In |
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Valve Body Material |
WCB,A105 |
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Applicable Temperature |
-29℃~425℃ |
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Applicable Medium |
Water, Oil, Steam |
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Execute Institution |
Manual, Bevel Gear, Electric, Pneumatic, Etc. |
Body: The main external structure of the valve. It is usually made of durable materials such as cast iron, steel, stainless steel or bronze.
Bonnet: It is the part that covers the upper part of the valve and provides sealing.
Gate/Wedge: The main part that cuts or opens the flow. There are different types such as flexible wedge, solid wedge or knife.
Stem: It is the part that connects the flywheel and the bolt and allows the bolt to move up and down.
Flywheel (Handwheel): In valves with manual control, it allows the shaft to be moved by turning by the user.
Gasket (Seat): It is the surface on which the bolt sits and provides sealing. It can be metal-metal or elastomer-metal.
Materials Of Gate Valve
Carbon Steel
Known for its strength and cost-effectiveness, it is ideal for general-purpose applications.
Stainless Steel
Resistant to corrosion and suitable for environments with aggressive chemicals.
Bronze and Brass
Common in water-related applications due to their excellent corrosion resistance and machinability.
Alloys
High-performance alloys like Inconel or Monel are used for specialised applications involving extreme conditions.
Mechanism of Gate Valve
The operating mechanism of gate valves is based on a very simple but effective engineering principle. Inside the valve body, there is a gate or wedge that cuts the pipeline perpendicularly. This gate is moved up or down by means of a rod called a stem. The movement of the stem is provided by a flywheel (handwheel) in manual systems and by an electric, pneumatic or hydraulic actuator in automatic systems. When the valve is opened, the slide lifts up and completely evacuates the inside of the pipe, allowing a straight flow path. Thanks to this structure, the fluid moves through the line with almost no resistance.
When the valve is to be closed, the slide is lowered down and fully seats on the gasket surface on the valve body, completely shutting off the flow. During this seating process, a high degree of sealing is ensured between the gate and seal surfaces. When the slide reaches the full closing position, the passage of the fluid is reset. Thanks to this opening-closing principle of gate valves, energy losses are reduced, the pressure balance in the system is maintained and a safe operation is ensured. However, when these valves are used in the half-open position, it is recommended to operate only fully open or fully closed, as undesirable conditions such as turbulence, wear and seal deformation may occur on the edges of the gate.
Application of Gate Valve
Power Plants
In systems operating under high temperature and pressure, expansion and deformations are tolerated by using foldable type sliders.
Water and Waste Water Systems
It offers the advantage of low pressure loss in large diameter lines. It is widely used especially in water treatment and distribution systems.
Chemical and Petrochemical Plants
Provides operation safety with special alloy body and gasket structures against aggressive fluids.
Paper and Pulp Industry
Knife-type gate valves allow fibrous and dense fluids to be conveyed without clogging.
Maintain of Gate Valve
Inspection
Periodically inspect the valve for external damage, corrosion, or leaks.
Packing Replacement
Replace worn or compressed packing materials to maintain a proper stem seal.
Lubrication
Regularly lubricate the stem threads to ensure smooth operation.
Seat Repairs
If the valve begins to leak, inspect the seat for damage and either regrind or replace it as necessary.
FAQ
Tiansu (Tianjin) Valve Group Co., Ltd. is one of the most professional gate valve manufacturers and suppliers in China, also supports customized service. Welcome to wholesale CE approved gate valve made in China here and get free sample from our factory. For price consultation, contact us.
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