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Wafer Concentric Type Butterfly Valve (tanghai valve)

A wafer concentric type butterfly valve is a type of butterfly valve commonly used in various industries, including marine applications. Here’s a brief overview of its features, selection considerations, and usage:

Features:

  1. Concentric Design: The wafer concentric butterfly valve features a concentric design where the stem passes through the center of the disc, ensuring a uniform seal around the circumference. This design minimizes turbulence and pressure drop while providing efficient flow control.
  2. Wafer Style: These valves have a wafer-style body, which means they fit between two flanges without the need for additional bolts or nuts. This compact design saves space and facilitates easy installation and removal.
  3. Resilient Seating: Most wafer concentric butterfly valves come with resilient seat materials such as EPDM or NBR, which provide excellent sealing properties and resistance to wear, corrosion, and chemicals.
  4. Bidirectional Sealing: The concentric design allows for bidirectional sealing, meaning the valve can be installed in either direction without affecting its performance.
  5. Manual or Actuated Operation: Wafer concentric butterfly valves are available in manual or actuated configurations. Manual valves are operated by hand, while actuated valves can be controlled remotely using pneumatic, electric, or hydraulic actuators for automated flow control.

Selection Considerations:

  1. Size and Pressure Rating: Choose a valve size and pressure rating suitable for the intended application and operating conditions. Consider factors such as flow rate, system pressure, and compatibility with existing piping.
  2. Material Construction: Select valve materials compatible with the fluid being handled and the environmental conditions. Common materials include stainless steel, carbon steel, ductile iron, and various alloys.
  3. Seat Material: Consider the type of seat material (e.g., EPDM, NBR, PTFE) based on the fluid properties (e.g., temperature, viscosity, chemical compatibility) and sealing requirements.
  4. Operation Type: Decide whether manual or actuated operation is preferred based on the level of automation required, accessibility, and control system integration.
  5. Standards Compliance: Ensure the selected valve complies with relevant industry standards and certifications for quality, performance, and safety, such as ANSI, API, ISO, and marine classification societies’ requirements.

Usage:

  1. Installation: Properly install the wafer concentric butterfly valve between flanges using appropriate gaskets and fasteners according to manufacturer specifications and industry standards.
  2. Operation: Operate the valve manually or remotely using the designated controls, following established procedures for opening, closing, and adjusting the flow as needed.
  3. Maintenance: Implement a regular maintenance schedule to inspect, clean, lubricate, and replace components as necessary to ensure optimal performance and longevity.
  4. Monitoring: Periodically monitor the valve’s operation and condition for signs of leakage, wear, or malfunction, and take corrective action as required to prevent downtime or safety hazards.
  5. Emergency Response: Establish protocols for responding to valve failures, leaks, or other emergencies, including shutdown procedures, isolation measures, and contingency plans to mitigate risks and minimize disruptions.

By considering these factors and following best practices for selection, installation, and maintenance, wafer concentric butterfly valves can effectively control flow and provide reliable performance in marine applications and other industrial settings.

Lug Concentric Type Butterfly Valve with Rubber Seated（tanghai valve)

A lug concentric type butterfly valve with rubber seated refers to a specific configuration of a butterfly valve commonly used in various industries, including marine applications. Let’s break down its features, considerations for selection, and how it’s typically used:

Features:

  1. Concentric Design: Like other concentric butterfly valves, this type features a design where the stem passes through the center of the disc, ensuring a uniform seal around the circumference. This design minimizes turbulence and pressure drop while providing efficient flow control.
  2. Lug Style: The valve body has lugs (also known as ears or tabs) on the valve’s periphery, allowing it to be bolted directly between flanges in the pipeline. This design provides easy installation and removal without needing to disconnect the entire pipeline.
  3. Rubber Seating: The valve has rubber or elastomeric seating, typically made from materials like EPDM or NBR, which provide excellent sealing properties. Rubber seats offer resilience, chemical resistance, and longevity, making them suitable for various fluids and operating conditions.
  4. Bidirectional Sealing: Similar to other concentric butterfly valves, this type can seal bidirectionally, allowing it to be installed in either direction without affecting its performance.
  5. Manual or Actuated Operation: Lug concentric butterfly valves are available in both manual and actuated configurations. Manual valves are operated by hand, while actuated valves can be controlled remotely using pneumatic, electric, or hydraulic actuators for automated flow control.

Selection Considerations:

  1. Size and Pressure Rating: Choose a valve size and pressure rating suitable for the intended application and operating conditions. Consider factors such as flow rate, system pressure, and compatibility with existing piping.
  2. Material Construction: Select valve materials compatible with the fluid being handled and the environmental conditions. Common materials include stainless steel, carbon steel, ductile iron, and various alloys.
  3. Seat Material: Consider the type of seat material (e.g., EPDM, NBR, PTFE) based on the fluid properties (e.g., temperature, viscosity, chemical compatibility) and sealing requirements.
  4. Operation Type: Decide whether manual or actuated operation is preferred based on the level of automation required, accessibility, and control system integration.
  5. Standards Compliance: Ensure the selected valve complies with relevant industry standards and certifications for quality, performance, and safety, such as ANSI, API, ISO, and marine classification societies’ requirements.

Usage:

  1. Installation: Properly install the lug concentric butterfly valve between flanges using appropriate gaskets and fasteners according to manufacturer specifications and industry standards.
  2. Operation: Operate the valve manually or remotely using the designated controls, following established procedures for opening, closing, and adjusting the flow as needed.
  3. Maintenance: Implement a regular maintenance schedule to inspect, clean, lubricate, and replace components as necessary to ensure optimal performance and longevity.
  4. Monitoring: Periodically monitor the valve’s operation and condition for signs of leakage, wear, or malfunction, and take corrective action as required to prevent downtime or safety hazards.
  5. Emergency Response: Establish protocols for responding to valve failures, leaks, or other emergencies, including shutdown procedures, isolation measures, and contingency plans to mitigate risks and minimize disruptions.

By considering these factors and following best practices for selection, installation, and maintenance, lug concentric butterfly valves with rubber seating can effectively control flow and provide reliable performance in marine applications and other industrial settings.

Butterfly Valve of Marine Valves(tanghai valve)

A butterfly valve used in marine applications, often referred to simply as a marine butterfly valve, is a critical component in ship systems for controlling the flow of fluids such as water, fuel, and various other liquids.

Here’s an overview Features: 

  1. corrosion Resistance: Marine environments expose valves to corrosive elements like saltwater. Hence, marine butterfly valves are typically made from materials such as bronze, stainless steel, or other corrosion-resistant alloys.
  2. Compact Design: Space is often limited aboard ships, so marine butterfly valves are designed to be compact and lightweight while still providing efficient flow control.
  3. Resilient Seating: Many marine butterfly valves feature resilient seating made of materials like EPDM or NBR, which offer excellent sealing properties and resistance to wear, corrosion, and chemicals.
  4. Bidirectional Sealing: Butterfly valves are inherently bidirectional, meaning they can effectively seal flow in both directions, allowing flexibility in installation and operation.
  5. Manual or Actuated Operation: Marine butterfly valves can be operated manually using a hand lever or wheel, or they can be equipped with pneumatic, electric, or hydraulic actuators for remote operation and automation.

Selection Considerations:

  1. Size and Pressure Rating: Choose a valve size and pressure rating suitable for the intended application and system requirements aboard the ship.
  2. Material Compatibility: Select materials compatible with the fluids being handled and resistant to corrosion in the marine environment.
  3. Sealing Material: Consider the type of sealing material based on temperature, pressure, and fluid properties to ensure reliable performance and longevity.
  4. Operation Type: Determine whether manual or actuated operation is preferable based on accessibility, control requirements, and automation needs.
  5. Compliance and Certification**: Ensure the selected valve meets relevant industry standards and certifications for marine applications, such as those from classification societies like DNV, ABS, or Lloyd’s Register.

Usage:

  1. Installation: Install the marine butterfly valve correctly according to manufacturer specifications, ensuring proper alignment, bolt torquing, and gasket sealing between flanges.
  2. Operation: Operate the valve using the designated controls, whether manual or actuated, following established procedures for opening, closing, and adjusting flow rates as needed.
  3. Maintenance: Implement a regular maintenance schedule to inspect, clean, lubricate, and replace components as necessary to ensure optimal performance and reliability.
  4. Monitoring: Periodically monitor the valve’s operation and condition for signs of leakage, wear, or malfunction, and take corrective action as required to prevent downtime or safety hazards.
  5. Emergency Response: Establish protocols for responding to valve failures, leaks, or other emergencies, including shutdown procedures, isolation measures, and contingency plans to mitigate risks and minimize disruptions.         By considering these factors and adhering to best practices for selection, installation, operation, and maintenance, marine butterfly valves can effectively control flow and contribute to the safe and efficient operation of ship systems.

Marine Butterfly Valves are Used to Close or Open the Medium in the Ballistic Channel (Tanghai Valve)

Valve selection of a single variety of valve goods, marine valve speech is inconsistent, partly by use (such as chemical, alcohol, power station, etc.), partly by medium (such as water vapor, atmosphere valve, etc.), partly by material (such as pig iron valve, cast steel valves, forged steel valves, etc.), partly by the way of connection (such as fingerprints, flange valves, etc.), and partly by the measurement (such as high-temperature valves, low-temperature valves, etc.). The following is a list of the most common types of pressure reducing valves for marine use.

Marine pressure reducing valve – used to actively elevate the ballistic and facilities within the medium pressure. Marine pressure-reducing valve medium through the valve flap gap, marine pressure-reducing valve occurs barrier formation pressure loss, to reach the means of pressure reduction. Trap – used to steam ballistic actively remove condensate, to prevent the loss of steam or leakage. Marine butterfly valve is used to close or open the ballistic medium. Can also be used for conditioning. Insurance valve – used in boilers, ware facilities and ballistic, when the media pressure stumbles over the rule value, can actively remove the excess media pressure, to protect the consumption of operational insurance.

In the power station valves can master the boiler and steam engine operation; in alcohol, chemical consumption, the valve also plays a role in mastering the whole consumer facilities and process line of the abnormal operation. In other units are also like that. In spite of this, valves are often ignored by the crowd compared with other goods. Similarly: when installing tools and facilities, people often focus on the main tools and facilities range. Therefore, for the valve selection, installation, use and so on need to be careful.

TH Valve is a professional manufacturer of butterfly valve, gate valve, check
valve, globe valve, knife gate valve, ball valve with API, JIS, DIN standard, used in Oil,
Gas, Marine industry, Water supply and drainage, fire fighting, shipbuilding, water
treatment and other systems, with Nominal Diameter of DN50 to DN1200,
NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS.
Standards: EN 593, API609, API6D

Marine Butterfly Valve in the Application of Characteristics（Tanghai Valve）

The butterfly discs of the marine butterfly valve is installed in the diameter position of the ballistic path. Marine butterfly valve is easy to construct, small volume, light weight, only by the majority of more or less whole machine components. And as long as around 90 ° can quickly open and close, easy to operate, while the valve has excellent fluid mastery characteristics.

Marine butterfly valve in the closed position, the butterfly discs thickness is the only barrier when the medium flows through the valve body, so the pressure drop through the valve is very small, so there is a better flow control characteristic. Inertia sealing valve, the gasket can be set in the valve body or attached to the perimeter of the butterfly discs. Adoption of metal sealing valve is normally longer than inertia sealing valve life, but it is difficult to achieve complete sealing. Metal sealing can comply with the higher degree of task, inertia sealing is subject to the shortcomings of the degree of constraints.

If the marine butterfly valve as a flow control application, the main thing is to accurately choose the valve position and type. Marine butterfly valve construction principle is particularly suitable for the manufacture of large diameter valves. Butterfly valve is not only in alcohol, natural gas, chemical industry, ionization and other normal light industry to lose wide use, and also used in thermal power plant icing water fractions. For the clip type butterfly valve is to use the double head nut to butt the valve between the two ballistic flange, flange type butterfly valve is with flange on the valve, with the nut on the valve on the two ends of the flange is connected to the ballistic flange.

TH Valve is a professional manufacturer of butterfly valve, gate valve, check valve, globe valve, knife gate valve, ball valve with API, JIS, DIN standard, used in Oil,Gas, Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with Nominal Diameter of DN50 to DN1200,NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS.Standards: EN 593, API609, API6D.

Marine butterfly valve–Application of Marine Butterfly Valves

Marine butterfly valve is a kind of valve used to control or cut off fluid in liquid or gas flow pipeline on board. The characteristics of marine butterfly valves are simple structure, light weight, convenient operation, and good safety in use. Below, we will introduce marine butterfly valves in several aspects.

 1、 Application of Marine Butterfly Valves

Marine butterfly valves are widely used for regulating and cutting off liquid flow and gas in various oil tankers, Chemical tanker, natural gas tankers, liquefied gas tankers and rescue ships. And it can also be applied in other equipment and pipelines, such as petrochemical, energy, metallurgy, power, water treatment and other fields.

 2、 Structure of butterfly valve

Marine butterfly valves generally adopt a circular flat surface on the outside, and are composed of bent plates and closed gaskets on the inside. The valve stem and valve disc are rigidly connected through suitable mechanical connections, and the valve disc is configured into the pipeline to control the flow rate by relying on the flow force itself.

 3、 Characteristics of Marine Butterfly Valves

 （1）Simple structure, small size, light weight, and low flow resistance.

（2）Quick opening and closing, easy to operate, and reduces fluid switching time.

 （3） Corrosion resistance, reliable sealing, and good leak prevention effect.

 （4）Long service life and simple maintenance.

 （5） Its special structural design ensures that it still retains the advantages of no combustion, leak prevention, and fire resistance under low pressure, small diameter, and critical conditions.

4、 Selection Method of Marine Butterfly Valves

When selecting a marine butterfly valve, it is necessary to consider parameters such as the nominal diameter, pressure rating, mode of action, and medium temperature of the butterfly valve. It is best to make a choice based on specific conditions.

It is necessary to consider the operating temperature and medium characteristics, and appropriate valve diameters and shear forces should be designed based on the flow speed of the medium, and appropriate materials or sealing forms should be selected.

5、 How to Use and Maintain Marine Butterfly Valves

When using marine butterfly valves, attention should be paid to the installation direction and the position of the blocking plate to ensure that the valve is straight and to avoid tilting damage and leakage during operation.

For the maintenance and upkeep of marine butterfly valves, it is necessary to conduct timely inspections, regularly lubricate the valve and its surrounding components, and clean the operating bearings, gaskets, sealing surfaces, and bearings. Special attention should be paid to key areas.

Finally, we need to regularly conduct statistics and analysis on the usage of marine butterfly valves, compare them with other similar equipment, identify problems in the operation of butterfly valves, and promptly handle them. Only by doing well in daily maintenance and paying sufficient attention can the normal operation of butterfly valves be guaranteed and their service life be extended.

Finally, we need to regularly conduct statistics and analysis on the usage of marine butterfly valves, compare them with other similar equipment, identify problems in the operation of butterfly valves, and promptly handle them. Only by doing well in daily maintenance and paying sufficient attention can the normal operation of butterfly valves be guaranteed and their service life be extended.
Tianjin Tanghai Valve Co., Ltd. is a professional marine valve manufacturer, including butterfly valve, check valve, gate /Knife gate valve. We have certificates: CE, ISO, BV, DNV foundry andproducts approval. Now we have our own independent R & D, manufacturing, assembly and warehousing workshops; we have professional pre-sale and after-sale technical support and perfect services.Below is our wafer butterfly valve of marine valves,if you need to check more information,please click here:https://www.tanghaivalve.com/wafer-type-butterfly-valve-th-btv-aw/.Please contact us if you need more support, please contact us freely: info@tanghaivalve.com.We are committed to “Build a top valve enterprise; Be a reliable partner!”
Friends from all over the world are welcome to visit us for evaluation, guidance, and orders!

Marine Valve for Mono Flange Butterfly Valve

Rubber Lined Butterfly Valve with Mono Flange(Single Flange)

Single Flange butterfly vlaves suitable for connecting standard and design standard is PN 10 normally.

Material of Mono flange butterfly valve

Marine Butterfly Valve,Ductile Iron Mono Flange;NBR/EPDM/Viton Lined,shaft stainless steel,Disc is alu-bronze or stainless steel.

Marine quality butterfly valve with a bonded NBR liner suitable for many duties including oils and hydrocarbons,Supplied bare shaft, please specify if lever, gearbox or actuator is required. The butterfly valve offers quick opening and closing with full flow in either direction and leak tight shut off. Flange gaskets not needed since the lining that extends onto the faces acts as a gasket.

Tianjin Tanghai Valve Co., Ltd. is a professional marine valve manufacturer, including butterfly valve, check valve, gate /Knife gate valve. Wehave certificates: CE, ISO, BV, DNV foundry and products approval. Now we have our own independent R & D, manufacturing, assembly and warehousing workshops; we have professional pre-sale and after-sale technical support and perfect services.

Below is our wafer butterfly valve of marine valves, if you need to check more information, please click here: butterfly valve : https://www.tanghaivalve.com/wafer-type-butterfly-valve-th-btv-aw/;  https://www.tanghaivalve.com/double-flange-butterfly-valve-th-btv-df/

Please contact us if you need more support, please contact us freely: info@tanghaivalve.com.

We are committed to “Build a top valve enterprise; Be a reliable partner!”

Friends from all over the world are welcome to visit us for evaluation, guidance, and orders!

Semi-Lugged Butterfly Valve

Working Pressure: PN10/PN16

Size: From DN40-DN1200

Operator: bare shaft with ISO 5211 top flange, handlever and gearbox,actuators

Body material:CI,DI,Alu-bronze,CS and others

Disc:DI,Alu-bronze,SS

Seat:EPDM,NBR

Shaft:SS, Inconel

About material, it can be customized, please contact us if any further requirements.

Area of application

Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems

Standards

  • Design and Manufacture Conform to EN 593, API609,  JIS
  • Flange dimensions Conform to EN 1092-2 PN10, PN16, JIS5K, JIS10K
  • Face to Face dimensions Conform to EN558 series
  • Topwork’s dimensions Conform to ISO5211
  • Testing Conform to API598、EN12266-1

 

Actuation

  • Hand lever
  • Worm-gear/hand-wheel
  • Electric-actuator
  • Pneumatic-actuator
  • Hydraulic-actuator

Wafer type butterfly valve features

  • Simple structure and easy operation
  • Easy installation and good sealing
  • Long service life and high reliability
  • Good interchangeability of parts and cost saving
  • Wafer type butterfly valve with concentric design
  • Using backless structure, Rubber fusion bonded on valve body
  • Replaceable, resilient seat
  • Streamlined disc, one-piece stem
  • Approved and registered by VdS, DVGW

Related types of butterfly valves:

We have other types of butterfly valves: Lug type butterfly valve, U flange butterfly valve, double flange butterfly valve, fluorine lined PTFE butterfly valve, double eccentric butterfly valve and triple eccentric butterfly valves  used in Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with Nominal Diameter of DN50 to DN1200, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS. Standards: EN 593, API609, API6D,

Why is butterfly valve used more popular?

Generally, when choosing valves, we should also pay attention to what type is more appropriate. There are more and more types of valves available on ships. We can confirm what type is better according to the actual use needs. You can get a better feeling of use. At present, butterfly valves are often used, and their popularity is relatively high. So why is this valve so popular?

We need to understand the specific reasons, so that we can not only feel more comfortable to use the valve, but also better confirm whether to continue to use the equipment. For example, it is light in weight and small in size. In the use of equipment will also need to pay attention to the weight size and other aspects, in the case of light weight, small size, the operation of the valve is simple and convenient, while not easy to occupy space, can also have good adaptability, can be used in multiple Spaces. This type of high frequency of use, good sealing performance, quick and convenient opening and closing. You don’t have to worry about bad feelings when you use it.

wafer type butterfly valve (6)

wafer type butterfly valve (6)

In the case of demand, to use the butterfly valve, we need to consider clearly what kind of manufacturer to choose to provide equipment is more appropriate, now there are many manufacturers can choose, in the face of many manufacturers will feel confused, only after finding a professional manufacturer, can people feel trustworthy, such as whether the manufacturer will have rich experience, Whether there will be a good word-of-mouth evaluation, these professional reliable manufacturers, will be reassuring.

At the same time to find the manufacturer to provide butterfly valve, we need to check whether we can pass the quality inspection report to confirm that there is no problem in quality inspection, and we also need to know whether we can provide ourselves with better later service, in case there is a certain fault after use, whether we can arrange professional staff to help ourselves solve the fault, In this way, you can buy without any worries.

Tianjin Tanghai Valve Co., Ltd. is a professional marine valve manufacturer, including butterfly valve, check valve, gate /Knife gate valve. We have certificates:

CE, ISO, BV, DNV foundry and products approval. Now we have our own independent R & D, manufacturing, assembly and warehousing workshops; we have professional pre-sale and after-sale technical support and perfect services.

Double flange butterfly valve (2)

Double flange butterfly valve (2)

Below is our wafer butterfly valve of marine valves, if you need to check more information, please click here: butterfly valve : https://www.tanghaivalve.com/wafer-type-butterfly-valve-th-btv-aw/;  https://www.tanghaivalve.com/double-flange-butterfly-valve-th-btv-df/

Please contact us if you need more support, please contact us freely: info@tanghaivalve.com.

We are committed to “Build a top valve enterprise; Be a reliable partner!”

Friends from all over the world are welcome to visit us for evaluation, guidance, and orders!

Marine Valve (butterfly valve and ball valve)

Marine valves are used to control the pressure, flow and flow policy of the fluid in the ship pipeline in order to meet the environmental conditions of the ship. Valve is the control of fluid pipeline assembly, its basic function is to put through or cut off the pipeline medium smoothness, change the medium smoothness, change the direction of the flow of the medium, adjust the pressure and flow of the medium, protect the normal operation of the pipeline equipment.

According to the requirements of the shipbuilding industry of our country, a total of 12 general valves are designed, 1400 specifications. The height limit pressure of the valve is 25MPa and the diameter is 900mm. Valve materials are cast iron, carbon steel, alloy steel, copper alloy, aluminum alloy, titanium alloy, stainless steel, and non-metallic etc. Common medium for fresh water, sea water, air, steam, fuel oil, oil and so on.

Ball and butterfly valves, with their advantages of light weight, small size, good sealing function and easy opening and closing speed, have gradually gained operation on ships, and more and more efforts are being made to replace stop valves and gate valves, improving the functions of ships. Electric gate valve, electric globe valve, electric sea access valve, electro-hydraulic ball valve, electro-hydraulic butterfly valve, pneumatic butterfly valve and other remote control valves have gradually been adopted by the department ship system, and the operation of hydraulic valve remote control system has long improved the level of modernization of ships. The special valves required by the function requirements of various systems on ships, such as high pressure butterfly valve, leading full-open safety valve, sea water solenoid valve, high piezo-liquid ball valve, changing hydraulic gate valve, special pressure reducing valve, temperature regulating valve, high pressure air solenoid valve, night displacement trap, general butterfly valve, etc., can also be developed by themselves to supply ship operation.

Tianjin Tanghai Valve Co., Ltd. is a professional marine valve manufacturer, including butterfly valve, check valve, gate /Knife gate valve. We have certificates: CE, ISO, BV, DNV foundry and products approval. Now we have our own independent R & D, manufacturing, assembly and warehousing workshops; we have professional pre-sale and after-sale technical support and perfect services.

 

Below is our wafer butterfly valve of marine valves, if you need to check more information, please click here: butterfly valve :https://www.tanghaivalve.com/wafer-type-butterfly-valve-th-btv-aw/;   ball valve: https://www.tanghaivalve.com/ball-valve-th-bav/

Please contact us if you need more support, please contact us freely: info@tanghaivalve.com.

We are committed to “Build a top valve enterprise; Be a reliable partner!”

Friends from all over the world are welcome to visit us for evaluation, guidance, and orders!

TH VALVE • PROFESSIONAL VALVE MANUFACTURER

GET IN TOUCH WITH US

Cell: 0086-185 2639 6136
0086-133 7031 7626
E-mail: tanghai@tanghaivalve.com
info@tanghaivalve.com
Web: www.tanghaivalve.com
Add: East of Guanghui Road, Beizhakou town, Jinnan District, Tianjin, P.R.China.

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