Eccentric Plug Valve

Trusted Eccentric Plug Valve Manufacturer

NTVAL provides durable Eccentric Plug Valves designed for reliable performance in tough environments. Engineered for easy maintenance and reduced downtime, they are a cost-effective solution for large-scale projects, offering efficiency and long-lasting dependability.

Reliable Double Eccentric Butterfly Valve

Control de calidad

The PMI test checks the material composition of the double eccentric butterfly valve, verifying it matches the required design for safe use.

Prueba PMI

The sealing test examines how well the valve can completely close, preventing leaks and maintaining effective flow control under pressure.

Prueba de estanquidad

The low emission test evaluates any potential leakage, reducing the release of harmful gases or liquids into the environment.

Prueba de bajas emisiones

The impact test checks the valve’s ability to handle sudden force or stress without breaking, providing durability in demanding conditions.

Prueba de impacto

The dimension inspection measures the valve’s parts, making sure every component fits accurately for smooth operation and reliability.

Inspección dimensional

The painting thickness test verifies the coating’s thickness, providing protection against corrosion and environmental wear, extending the valve’s lifespan.

Prueba de espesor de pintura

PT, or penetrant testing, identifies tiny cracks or surface flaws in the valve, highlighting areas that need repair or improvement.

PT

The material inspection reviews the strength and quality of the raw materials used, confirming their ability to withstand pressure and temperature.

Inspección de materiales

Aplicaciones de nuestras válvulas en sectores clave

Descubra cómo nuestras avanzadas soluciones de válvulas mejoran el control del flujo, ofreciendo mayor eficacia, seguridad y una estricta garantía de calidad.

Double eccentric butterfly valves handle corrosive chemicals with ease, offering dependable flow control in environments where safety is essential.

Procesado químico

In the petrochemical industry, these valves manage the flow of oil and gas efficiently, performing well in high-pressure and high-temperature situations.

Gasolina Química

These valves are vital in nuclear and power generation systems due to their ability to withstand extreme temperatures and heavy-duty operational conditions.

O.P.G & Nuclear

Double eccentric butterfly valves excel in the pulp industry, as they effectively control the flow of thick and abrasive fluids like slurry.

Pulp

Mining operations rely on these valves for their ability to handle abrasive materials, maintaining high performance in demanding environments.

Minería

In water and sewage systems, double eccentric butterfly valves offer reliable control over large volumes of water, contributing to effective operations.

Agua y alcantarillado

These valves regulate steam flow precisely, making them a practical choice for managing pressure and temperature in large steam distribution networks.

Sistema de vapor

In boiling systems, double eccentric butterfly valves provide safe and consistent control over steam and hot water flow, providing efficient heat management.

Sistema de ebullición

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Válvula de tapón

Válvula de mariposa

Cómo funciona

Common Applications

Eccentric plug valves are used to control difficult fluids like thick slurries and erosive liquids. They can either regulate the flow (throttling) or completely stop it (on/off operation). These valves are built to handle tough conditions with strong metal components, making them reliable for industries like mining, petroleum refining, power generation, and pulp and paper production.

Reverse Flow Advantage

In situations where the liquid is abrasive, it’s best to position the valve so the flow comes from the side with the shaft. This setup helps protect the valve’s parts from damage by keeping the fast-moving fluid away from the most sensitive areas. The seat ring and retainer, which are essential for the valve’s function, can be made from tough materials that resist wear and tear and are easy to maintain.

Selectable Trim

The internal parts of the valve, known as the trim, can be made from different materials depending on the fluid they will control. Options include hardened materials like ceramics and carbides, which are chosen for their ability to resist erosion and extend the valve’s life.

Cammed Segmented Ball

Some versions of the eccentric plug valve use a V-shaped ball instead of a traditional plug. This design allows the valve to handle a larger flow and offers a broader range of control. The ball moves in a way that reduces wear and friction by minimizing contact with the seat ring.

Especificaciones

Features & Benefits

Full-flow body design

Válvula de obturador excéntrico

Flanged End-ANSI 125

CV Value

Flanged End-Class 250

Mechanical Joint End

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Más información general

Specs of Double Eccentric Butterfly Valve

Construcción material

When purchasing an Eccentric Plug Valve, it’s important to consider whether the valve is API 6D certified. This certification makes sure that the valve meets the standards set by the American Petroleum Institute for pipeline valves. For example, using an API 6D-certified valve in pipeline projects guarantees safety and compliance with industry regulations.

Presión nominal

These valves are typically rated for pressures up to 250 PSI, depending on the specific model and size. Did you know that the pressure rating makes them suitable for medium to high-pressure systems in industries like water treatment, oil and gas, and chemical processing. They provide reliable flow control under demanding pressure conditions.

Temperatura

Double Eccentric Butterfly Valves can operate effectively within a temperature range of -20°C to 200°C, depending on the materials used. This wide temperature range allows them to be used in applications involving both hot and cold fluids. They maintain functionality without compromising the integrity of the valve components.

Features of Double Eccentric Butterfly Valve

Elastic Plug Surface

The Eccentric Plug Valve features an elastic plug surface, which is designed to provide a tight and secure seal. This flexibility allows the plug to adapt to varying pressures and conditions, reducing the risk of leaks. The elastic surface also helps to extend the lifespan of the valve by minimizing wear and tear during operation.

Suitable for Sandy Media

One of the key features of the Eccentric Plug Valve is its ability to handle sandy media. The valve is specifically designed to operate efficiently in environments where sand or other particulate matter is present. This makes it an ideal choice for industries like mining or wastewater treatment, where such conditions are common.

Double Eccentricities

The valve is designed with 2 eccentricities, which means the plug is offset both horizontally and vertically from the valve's center. This design reduces friction during operation, allowing for smoother movement and less wear on the valve parts. The double eccentricities also help secure a better seal, enhancing the valve's overall performance and durability.

Benefits of Double Eccentric Butterfly Valve

Mayor durabilidad

The Eccentric Plug Valve offers enhanced durability due to its strong design and materials. The elastic plug surface and double eccentricities contribute to less wear and tear, allowing the valve to last longer even in challenging environments. And on top of that, this durability translates into fewer replacements and maintenance, saving time and costs.

Rendimiento fiable

This valve is engineered to perform reliably even in harsh conditions, such as those involving sandy media. Its design allows the valve to handle particulates without clogging or losing efficiency, making it a dependable choice for industries with demanding operational environments. Additionally, the sleeve minimizes friction, further enhancing durability and reducing maintenance needs over time.

Improved Efficiency and Safety

The design features of the Eccentric Plug Valve, such as the double eccentricities, result in smoother operation and a tighter seal. This enhances the valve’s performance and contributes to safer operations by reducing the risk of leaks. With NTVAL's focus on quality, these valves are a reliable option for maintaining safe and efficient fluid control in various industrial applications.

Applications of Eccentric Plug Valve

Oil and Gas Industry

In the oil and gas industry, NTVAL’s Eccentric Plug Valves control the flow of crude oil and other hydrocarbons. These valves are designed to withstand the high pressures and temperatures commonly found in this sector. An example of their use is in pipeline systems where a reliable seal is essential to prevent leaks and offer safe transportation of resources.

Water and Wastewater Treatment

Eccentric Plug Valves are widely used in water and wastewater treatment facilities. They are ideal for controlling the flow of water, sludge, and other fluids, even when those fluids contain particulates like sand or grit. The valve’s ability to handle these abrasive materials without clogging makes it a reliable choice for maintaining efficient operations in these plants.

Procesado químico

Eccentric Plug Valves are also used to control the flow of various chemicals and corrosive materials in this industry. Their strong design allows them to handle aggressive substances without degradation, offering a long service life. Here’s the thing: these valves help maintain safety and efficiency in environments where precise flow control is critical to the production process.

Water and Sewage Treatment Plants

In water and sewage treatment, Double Eccentric Butterfly Valves regulate the flow of large volumes of water and waste fluids. Their ability to resist wear from continuous operation and exposure to impurities makes them perfect for these applications. These valves are also valuable for their low-maintenance requirements, which helps ensure reliable water and waste management.

3 Considerations Double Eccentric Butterfly Valve

01 Resistencia a la oxidación

Al comprar una válvula de material especial, es importante tener en cuenta su resistencia a la oxidación. La resistencia a la oxidación garantiza que la válvula mantendrá su integridad aunque esté expuesta a altas temperaturas o a sustancias corrosivas. Por ejemplo, con los productos químicos agresivos de la planta química, una válvula con una gran resistencia a la oxidación proporcionará una vida útil más larga.

02 Certificado ASME B16.34

Otra consideración clave es si la válvula cuenta con la certificación ASME B16.34, que certifica que la válvula cumple las estrictas normas del sector. Esta certificación es crucial para proyectos a gran escala donde la seguridad y el cumplimiento no son negociables. Las válvulas de materiales especiales de NTVAL cuentan con la certificación ASME B16.34, lo que garantiza que cumplen las normas más exigentes requeridas por industrias como la del petróleo y el gas o la de procesamiento químico.

03 Pruebas no destructivas

Es esencial tener en cuenta si la válvula de material especial se ha sometido a ensayos no destructivos (END) como parte de su proceso de garantía de calidad. Los ensayos no destructivos certifican que la válvula no presenta grietas ni otras imperfecciones que puedan comprometer su rendimiento. ¿Quiere conocer un secreto? Las válvulas de materiales especiales probadas mediante métodos NDT garantizan su integridad y rendimiento en los entornos más exigentes.

FAQs of Double Eccentric Butterfly Valve

1. Are NTVAL's Eccentric Plug Valves suitable for handling abrasive media?

Yes, our Eccentric Plug Valves are designed to handle abrasive media, with the plug typically coated or lined with materials that resist wear and extend valve life.

2. Can Eccentric Plug Valves handle abrasive media?

Yes, Eccentric Plug Valves are designed to handle abrasive media, with a rugged construction that minimizes wear even in demanding environments.

3. What is the pressure rating for Eccentric Plug Valves?

Our Eccentric Plug Valves are available in pressure ratings up to ANSI Class 300, making them suitable for various industrial applications.

4. How does an Eccentric Plug Valve minimize leakage?

The Eccentric Plug Valve features a precision-engineered plug and seat design that provides a reliable seal, minimizing the risk of leakage even under high-pressure conditions.

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Wall Thickness	AWWAC504-00 Table 2
Brida final	ANSI B16.1 CL125 or CL150
Grooved Ends	AWWAC606 for D.Ior Steel Pipe
Mechanical Joints	AWWAC111(ANSI 21.11)
Ratings	CL125/CL150/CL250

NO.	Nombre	Material	Especificación
1	Torque Collar	Ductile Iron	ASTM A 536
2	Snap Ring	Spring Steel
3	Cap screw	Acero
4	Capó	Cast Iron	ASTM A 126 Class B
5	O-Ring	Elastomer
6	Thrust Washer	PTFE
7	Journal Bearing	Acero inoxidable	ANSI 316
8	Cuerpo	Cast Iron	ASTM A 126 Class B
9	Plug Coating	Elastomer	As Specified
10	Travel Stop	Acero
11	U-Cup seal	Elastomer
12	Plug	Ductile Iron	ASTM A 536 Grade 65-45-12

TALLA (pulg.)	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
TALLA (pulg.)	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unidad:pulgada
A	2.5	3	4	5	6	8	10	12	14
C(D.I)	NA	NA	10.25	NA	12.5	14	16.56	18	21.63
C(STEEL)	8.5	8.5	10.13	12.38	12.38	13.88	16.44	18	21.5
D	6.18	6.18	7.25	8.38	8.38	10.88	—	—	—
E	3.5	3.75	4.5	5.75	5.75	7.62	8.88	10	10
F	5.38	5.59	6.31	7.56	7.56	9.63	11.63	13.31	13.31
G	6	6	6	6	6	12	12	12	18

TALLA (pulg.)	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
TALLA (pulg.)	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unidad:pulgada
A	7	7.5	9	10	11	13.5	16	19	21
B	0.68	0.75	0.93	0.93	1	1.12	1.18	1.25	1.38
C	7.5	8	9	10	10.5	11.5	13	14	17
D	6.18	6.18	7.25	8.38	8.38	10.68	—	—	—
E	3.5	3.75	4.5	5.75	5.75	7.62	8.88	10	13
G	6	6	6	6	6	12	12	12	12

TALLA (pulg.)	3″	4″	5″	6″	8″	10″	12″	14″	16″	18″	20″	24″	30″	36″
CV	500	1000	2000	2000	3000	6000	7000	8000	9000	11000	13000	21000	36000	47000

TALLA (pulg.)	3″	4″	6″	8″	10″	12″	14″	16″	18″	20”	24″	30″	36″	42″	48″
TALLA (pulg.)	3″	4″	6″	8″	10″	12″									Unidad:pulgada
A	7.68	9	11.12	13.38	15.62	17.93	20.31	22.56	24.84	27	31.5	39.12	46	53	60
B	0.93	1	1.06	1.12	1.18	1.38	1.31	1.38	1.43	1.5	1.62	1.68	2	2	2
C	11.5	14.25	15.75	17.38	19.38	20.75	24.5	27.25	29.25	31	42	51	60	72	84
D	6.5	9.25	10.75	12.38	14.38	15.75	17.5	–	–	–	–	–	–	–	–
E	2.5	25	2.5	2.5	2.5	2.5	3.5	–	–	–	–	–	–	–	–
F	6.18	7.5	8.38	10.68	–	–	–	15.81	17	20.43	22.88	26.93	33	37.62	37.62
G	3.84	4.5	5.75	7.62	8.88	10	13	14	15	16	21.62	24.75	29	29	36