Cast iron globe marine SDNR valve JIS F7353 5K

Standard Materials
body fc200
bonnet fc200
seat bc6/sus420
disc bc6/sus420
stem c3771bd or be/sus420
gland bc6
gasket non-asbestos






    Description

    Certified quality – Our cast iron globe marine SDNR valve JIS F7353 5K is designed and manufactured to meet the strict standards of CCS, ABS, LR, NK, BV, KR, RS, DNVGL. You can trust in our certifications to ensure safety and reliability for your marine applications.

    • Superior materials – The body and bonnet of our valve are made from fc200 cast iron for durability and strength. The seat and disc are constructed with bc6 or sus420 material for corrosion resistance. The stem options include c3771bd or be/sus420 for excellent performance in various conditions.
    • Wide range of use – With a classification society certificate from CCS, ABS, LR, NK, BV, KR, RS, DNVGL our valve is suitable for a variety of marine applications. From seawater systems to ballast tanks and beyond, trust in our expertise to deliver reliable valves that meet industry standards.
    • Global reach – Our valve is crafted with precision in mind to meet the needs of customers worldwide. With certifications that cover various regions and countries, you can count on us to provide superior products that comply with international regulations. Choose our valve for global satisfaction and peace of mind.

    Standard Materials
    body fc200
    bonnet fc200
    seat bc6/sus420
    disc bc6/sus420
    stem c3771bd or be/sus420
    gland bc6
    gasket non-asbestos

    Cast iron globe marine SDNR valve JIS F7353 5K

    FAQs

    What is JIS F7353 5K

    JIS F7353 5K is a Japanese Industrial Standard (JIS) for marine valves. This standard specifies the technical requirements and testing methods for cast iron globe and angle valves used in shipbuilding, including materials, pressure-temperature ratings, dimensions, and performance.

    Firstly, it’s important to understand that JIS standards are widely accepted as the benchmark for quality and reliability in various industries. In particular, JIS F7353 5K has gained high recognition within the maritime industry due to its rigorous testing procedures and stringent product specifications.

    The “5K” designation in this standard refers to the nominal pressure rating of 5kgf/cm² (or approximately 72 psi). This means that these valves can withstand a maximum working pressure of up to 5000 kPa or about half an atmosphere. This rating is commonly used in low-pressure systems found on small vessels such as fishing boats or yachts.

    What is globe marine SDNR valve

    The globe marine SDNR valve is a crucial component in the maritime industry, often referred to as the “heart” of any ship’s fluid system. It stands for Shut-off, Double Non-Return valve and plays a vital role in the safe and efficient operation of ships.

    This type of valve is specifically designed to control the flow of fluids through pipes on board vessels. It allows for both shut off and non-return functions, providing sailors with greater control over their ship’s fluid systems. This versatility makes it an essential tool in the smooth functioning of various vessel operations.

    One notable feature of this type of valve is its ability to effectively block backflow or reverse flow. This means that when pressure changes occur within a pipeline, such as during a sudden increase or decrease in speed, the SDNR valve will automatically adjust itself to prevent any unwanted backflow from occurring. This not only ensures uninterrupted operations but also prevents damage to critical components within the piping system.

    In which type of ships are globe marine SDNR valve used most?

    The use of SDNR (Slam-Shut, Double Non-Return) valves in ships is crucial for the safety and efficiency of marine operations. These valves are designed to prevent the backflow of fluids, gases or vapors in a pipeline system, ensuring safe and reliable operation.

    While SDNR valves can be found in various types of ships, they are most commonly used in tanker vessels, bulk carriers and LNG carriers. This is due to the nature of these vessels which require frequent loading and offloading operations involving highly flammable substances.

    One main reason for using SDNR valves in tanker vessels is to comply with strict safety regulations set by organizations such as the International Maritime Organization (IMO). These regulations aim to reduce the risk of explosions or fires caused by overpressure or backflow during cargo transfer. In fact, it has been mandated that all tanker vessels must have at least one SDNR valve installed on each cargo tank vent line.

    Bulk carriers also heavily rely on SDNR valves during their operations. These large ships transport dry goods such as grains, ores or coal which are prone to spontaneous combustion when exposed to heat or oxygen. Thus, having an effective backflow prevention system like an SDNR valve is essential for maintaining a safe environment onboard these vessels.

    LNG carriers utilize cryogenic temperatures (-162°C) for transporting liquefied natural gas which poses significant risks if handled improperly. The use of multiple layers and insulation on pipes makes it challenging to detect any potential leakage that can result from backflow events. To avoid any possibility of accidents occurring due to this factor, globe marine SDNR valves are employed along with other safety measures.