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

Controle de qualidade

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

Teste PMI

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

Teste de vedação

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

Teste de baixa emissão

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

Teste de impacto

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

Inspeção de dimensões

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

Teste de espessura da 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.

Inspeção de materiais

Nossas aplicações de válvulas nos principais setores

Descubra como nossas soluções avançadas de válvulas melhoram o controle de fluxo, proporcionando maior eficiência, segurança e garantia de qualidade rigorosa.

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

Processamento químico

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

Química da gasolina

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. e Nuclear

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

Polpa

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

Mineração

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

Água e esgoto

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 ebulição

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Válvula de gaveta

Válvula de esfera

Válvula globo

Válvula de retenção

Válvula de plugue

Válvula borboleta

How It Works

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.

Especificações

Recursos e benefícios

Full-flow body design

Válvula de plugue excêntrico

Flanged End-ANSI 125

CV Value

Flanged End-Class 250

Mechanical Joint End

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Specs of Double Eccentric Butterfly Valve

Construção do 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.

Classificação de pressão

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.

Faixa de 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

Durabilidade aprimorada

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.

Desempenho confiável

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

Setor de petróleo e gás

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.

Tratamento de água e efluentes

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.

Processamento 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 Resistência à oxidação

Ao comprar uma válvula de material especial, é importante considerar a resistência à oxidação da válvula. A resistência à oxidação garante que a válvula manterá sua integridade mesmo quando exposta a altas temperaturas ou substâncias corrosivas. Por exemplo, com os produtos químicos agressivos na fábrica de produtos químicos, uma válvula com forte resistência à oxidação proporcionará uma vida útil mais longa.

02 Certificação ASME B16.34

Outra consideração importante é se a válvula é certificada pela ASME B16.34, que atesta que a válvula atende aos rigorosos padrões do setor. Essa certificação é crucial para projetos de grande escala em que a segurança e a conformidade não são negociáveis. As válvulas de materiais especiais da NTVAL são certificadas pela ASME B16.34, garantindo que elas atendam aos mais altos padrões exigidos por setores como petróleo e gás ou processamento químico.

03 Testes não destrutivos

É essencial considerar se a válvula de material especial foi submetida a testes não destrutivos (NDT) como parte de seu processo de garantia de qualidade. Os testes não destrutivos certificam que a válvula está livre de rachaduras ou outras imperfeições que possam comprometer seu desempenho. Quer saber um segredo? As válvulas de materiais especiais testadas com métodos NDT garantem sua integridade e desempenho nos ambientes mais 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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Espessura da parede	AWWAC504-00 Table 2
Flange de extremidade	ANSI B16.1 CL125 or CL150
Grooved Ends	AWWAC606 for D.Ior Steel Pipe
Mechanical Joints	AWWAC111(ANSI 21.11)
Classificações	CL125/CL150/CL250

NÃO.	Nome	Material	Especificação
1	Torque Collar	Ferro dúctil	ASTM A 536
2	Anel de pressão	Spring Steel
3	Cap screw	Aço
4	Boné	Ferro fundido	ASTM A 126 Class B
5	O-Ring	Elastômero
6	Thrust Washer	PTFE
7	Journal Bearing	Aço inoxidável	ANSI 316
8	Corpo	Ferro fundido	ASTM A 126 Class B
9	Plug Coating	Elastômero	As Specified
10	Travel Stop	Aço
11	U-Cup seal	Elastômero
12	Plugue	Ferro dúctil	ASTM A 536 Grade 65-45-12

TAMANHO (pol.)	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
TAMANHO (pol.)	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unidade: polegada
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

TAMANHO (pol.)	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
TAMANHO (pol.)	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unidade: polegada
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

TAMANHO (pol.)	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

TAMANHO (pol.)	3″	4″	6″	8″	10″	12″	14″	16″	18″	20"	24″	30″	36″	42″	48″
TAMANHO (pol.)	3″	4″	6″	8″	10″	12″									Unidade: polegada
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