Plug Valve

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המוצרים החדישים

צור קשר

טל: +86-577-67330098
פקס: +86-577-67998131
המון: +8618757788866
אימייל:snv@sunawevalve.com
הוסף: אנפנג תעשייתי, אוביי עיר, וונג'ואו עיר, Zhejiang, חרסינה

The company' s founder team graduated from mechanical and electrical automation majors and has been engaged in the valve industry for more than 20 years. It is committed to providing customers with a complete set of fluid control solutions. It is a company integrating scientific research and development, A large-scale valve enterprise integrating testing and testing, manufacturing and sales.

The company mainly produces API 6D pipeline ball valves, gate valves, globe valves, check valves, plug valves and API 609 series butterfly valves in 6 categories, with more than 1,000 specifications and varieties. Products widely cover petrochemical, coal chemical, nuclear power, LNG, marine, aerospace, metallurgy, papermaking and other industries.

After years of hard work and development, it has become a key backbone enterprise in the valve industry. It specializes in improving the innovation and manufacturing capabilities of special valves in harsh industrial environments. High-quality products and fast after-sales service have won praise and trust from customers at home and abroad.

שסתום תקע ANSI

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שסתום תקע משומן

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שסתום תקע שרוול

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1. Low frictional resistance

2. Tight shut-off

Another advantage of plug valves is their ability to provide tight shut-off. When closed, the cylindrical or conical plug completely blocks the flow of fluid, preventing any leakage or seepage from the valve. This makes plug valves ideal for applications where a high degree of shut-off is required, such as in critical process applications.

3. Simple design

4. High temperature and pressure resistance

5. Flexibility

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The main seal in older lubricate plug valves is metal-to-metal between the plug and valve body. When pressure is the employee to the valve through the lubrication fitting, it makes up in the lube sealant reservoir under the plug, eventually "lifting" the plug and forcing it away from the metal-to-metal seal.

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1.Lubricated plug valve

2.Non-lubricated plug valve
Non-lubricated plug valves typically find use in low-pressure systems. Unlike the lubricated plug valve, non-lubricated plug valves have no form of automatic lubrication and are more prone to deterioration and wear. Due to this, non-lubricated valves are cheaper than their lubricated counterparts. This lends non-lubricated valves to best fit applications with small actuator torque requirements.

3.Multi-port plug valve

4.Eccentric plug valve

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High-pressure flow lines
These plug valves can handle high pressure hence they are used in high-pressure applications like coiled tubing, cementing, acidizing, high-pressure/temperature materials, etc.

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The plug valves offer a great flow control/isolation of the materials because these valves can easily seal off and separate the liquids in order to avoid the contamination or mixing, which is a crucial method specific high-pressure application.

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1. Fluid type
Lubricated plug valves are better suited for corrosive, high-temperature and pressure, and abrasive fluid.

2. Flow control needs
A 2-port plug valve will suffice for simple on/off control. A 3-port plug valve can provide diversion and mixing operations.

3. Maintenance capabilities
If regular lubrication is not suitable, a non-lubricated plug valve is the better option.

4. Material compatibility

5. Size and end connections

SUNAY is a professional manufacturer of valves. Headquartered in Anfeng Industrial Zone, Yongjia, Zhejiang. The company was established in 2010 with a registered capital of 10.8 million yuan and has three holding manufacturing companies. The company's founder team graduated from mechanical and electrical automation majors and has been engaged in the valve industry for more than 20 years. After years of hard work and development, it has become a key backbone enterprise in the valve industry.

A: Usually available in cylindrical or conical shapes, plug valves are quarter-turn manual motion valves used for stopping or starting the flow of fluid. They offer on-off, diverting, as well as basic moderate throttling services.

A: When greasing, ensure the Valve is in the open position and monitor the grease gun pressure gauge while pumping grease into Valve. Pump grease until a recommended grease pressure of 3,000 PSI is achieved.

A: The unique feature of this valve is that its seat is offset from the valve shaft, thereby providing eccentric action. Figure 3 illustrates the second offset between the centerlines of the seat and shaft. A mid-size valve may have a half-inch second offset.

A: Plug valves are more user-friendly than ball valves, requiring less torque to open and shut. As such, they can be employed in applications requiring minimal force. Furthermore, they offer greater versatility in application and can handle more fluids. Common applications include gas, liquid fuel, and throttling tasks.

A: Plug valves can be divided into four major groups, depending on their functionality. These groups are lubricated, non-lubricated, multi-port, and eccentric.

A: Eccentric Plug Valves can be used for either isolation / shutoff or throttling / control services. They are ideal for handling clean and dirty liquids, sludge, slurries and gases. Eccentric plug valves are available in sizes from 15-1800 mm with a temperature range of up to 150 degrees Celsius.

A: Cast-in ribs behind the body lining concentrate compression of the lining between the ribs and the plug. This assures a full circumferential in-line seal. There is also a full circumferential seal around the plug, both above and below the flow passage.

A: Plug valves are designed with eccentric rubber disc seating surfaces. The plug rotates 1/4 turn to provide shutoff in pipes. The eccentric seating action provides for tighter shutoff as the actuator is adjusted to provide for more rotation.

Q: Is a plug valve a shut-off valve?

A: These valves are quarter-turn style valves, like butterfly valves, Plug Valves are designed to be a cost-effective solution for pump control, shut-off and throttling operation.

A: Round port plug comes as full port type, where port diameter is equal or larger than pipe diameter. Standard - round port plug have port diameter smaller than corresponding pipe diameter. Third common port type is diamond port plug. Plug valves come in lubricated or non-lubricated types.

A: A plug valve is typically a quarter-turn (90 deg rotation) on-off valve, while eccentric plug valves are often used for control applications. The plug may be cylindrical or tapered, and may be designed with a variety of port patterns. End connections are typically flanged, hub type, or butt weld.

A: A plug valve is a quarter-turn rotary motion manual valve. It uses a cylindrical or tapered plug (plug-shaped disk) to permit or prevent straight-through flow through the body. Plug valves offer a straightway passage through the ports so that fluid can flow through the opening plug with a minimum of turbulence.

A: Gate valves are not intended for throttling. They are designed such that media flowing at high velocity can vibrate and quickly erode or tear a partially-open valve disc off its seat.

A: Butterfly valves, like ball valves, operarte with a 1/4 turn. They are generally used for handling large flows of gases or liquids, including slurries, but should not be used for throttling for extended periods of time. They are also very compact relative to flanged gate and ball valves.

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