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In the known butterfly valve technology, its sealing form is mostly sealed structure, sealing materials for rubber, ptfe, etc
below photos are ptfe lined butterfly valve of tianjin tanghai valve, more information please click here: ptfe butterfly valveit can replace the stainless steel body under conventional conditions, with higher cost performancedue to the limitation of structural characteristics, it is not suitable for high temperature resistance, high pressure resistance, corrosion resistance, wear resistance and other industriesthe butterfly plate of the butterfly valve is installed in the diameter direction of the pipe
ptfe (teflon) butterfly valve can be equipped with akr electric, by pneumatic actuator, input control signal (4~20madc or 1~5vdc) and single-phase power supply can control the operation, can realize intelligent type (regulating type) and switching type
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, ccsstandards: en 593, api609, api6dwith strong function, small size, light and pleasant, reliable performance, simple supporting, large circulation capacity, especially suitable for the medium is sticky, containing particles, fiber properties of the occasionin the cylindrical channel of the butterfly valve body, the disc shaped butterfly plate rotates around the axis, the rotation angle is 0°~90°, rotate to 90°, the valve brand is fully open
at present, the ptfe butterfly valve, as a component used to realize the on-off and flow control of the pipeline system, has been widely used in petroleum, chemical industry, metallurgy, hydropower and many other fieldsptfe butterfly valve is to adapt to some corrosive environment with strong acid, strong alkali, petroleum, chemical, food and other special areas of need, the use of ptfe made of the valve body, has a strong anti-corrosion effectIndia
₹ 1
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check valve opening and closing parts by the medium flow and force to open or close, to prevent the medium backflow of the valve called check valve
if you need more information, please click here: dual plate swing check valve, you can get more information here
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, ccsthe double-door check valve adopts clamping type, the butterfly plate is two semicircle, and the sealing surface can be body surfacing wear-resistant material or rubber lining, wide range of use, reliable sealingstandards: en 593, api609, api6dthe dual plate check valve is used for pure pipeline and industrial, environmental protection, water treatment, high-rise building water supply and drainage pipeline, to prevent the reverse flow of the mediumcheck valves belong to automatic valves, mainly used for medium one-way flow on the pipeline, only allow the medium to flow in one direction, in order to prevent accidentsIndia
₹ 1
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bidirectional sealing: butterfly valves are inherently bidirectional, meaning they can effectively seal flow in both directions, allowing flexibility in installation and operation
material compatibility: select materials compatible with the fluids being handled and resistant to corrosion in the marine environmentby 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 systemsa 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
usage:
installation: install the marine butterfly valve correctly according to manufacturer specifications, ensuring proper alignment, bolt torquing, and gasket sealing between flanges
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
sealing material: consider the type of sealing material based on temperature, pressure, and fluid properties to ensure reliable performance and longevity
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
selection considerations:
size and pressure rating: choose a valve size and pressure rating suitable for the intended application and system requirements aboard the ship
here’s an overview features:
corrosion resistance: marine environments expose valves to corrosive elements like saltwater
operation type: determine whether manual or actuated operation is preferable based on accessibility, control requirements, and automation needs
compact design: space is often limited aboard ships, so marine butterfly valves are designed to be compact and lightweight while still providing efficient flow controlhence, marine butterfly valves are typically made from materials such as bronze, stainless steel, or other corrosion-resistant alloys
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
maintenance: implement a regular maintenance schedule to inspect, clean, lubricate, and replace components as necessary to ensure optimal performance and reliability
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
operation: operate the valve using the designated controls, whether manual or actuated, following established procedures for opening, closing, and adjusting flow rates as needed
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 chemicalsIndia
₹ 13827