Hydraulic Check Valve Manufacturers in Malaysia

Types of Check Valve and Their Uses

Check valves are essential components in piping systems that allow fluid to flow in one direction while preventing it from flowing back in the opposite direction. They are commonly used in a wide range of industries, including oil and gas, water treatment, chemical processing, and food and beverage production. In this blog, we will discuss the different types of check valves and their uses.

  • Swing Check Valve The swing check valve is the most commonly used type of check valve. It consists of a disc that swings open and closed to allow or prevent fluid flow. The disc is attached to a hinge, which allows it to swing freely. Swing check valves are ideal for low-pressure applications, such as water supply and drainage systems.

  • Lift Check Valve The lift check valve uses a disc that lifts up to allow fluid flow and drops back down to prevent backflow. Lift check valves are ideal for applications where there is a higher pressure drop, such as in steam systems.

  • Tilting Disc Check Valve The tilting disc check valve uses a disc that tilts to allow fluid flow and returns to its original position to prevent backflow. This type of check valve is ideal for applications that require a quick response time, such as in firefighting systems.

  • Ball Check Valve The ball check valve uses a ball that rolls to allow fluid flow and sits in place to prevent backflow. Ball check valves are ideal for applications that require a low-pressure drop, such as in water supply systems.

  • Diaphragm Check Valve The diaphragm check valve uses a flexible diaphragm that flexes to allow fluid flow and returns to its original position to prevent backflow. This type of check valve is ideal for applications that require a tight seal, such as in chemical processing systems.

  • Dual Plate Check Valve The dual plate check valve uses two plates that open and close to allow or prevent fluid flow. The plates are spring-loaded to ensure a tight seal when closed. This type of check valve is ideal for high-pressure and high-temperature applications, such as in oil and gas production.

  • Wafer Check Valve The wafer check valve is a compact, lightweight valve that uses a disc that swings to allow fluid flow and closes to prevent backflow. This type of check valve is ideal for applications that require a low-pressure drop and minimal space, such as in HVAC systems.

In conclusion, the different types of check valves have unique features and advantages that make them suitable for specific applications. The selection of the right type of check valve is essential for ensuring efficient and reliable operation of piping systems. Understanding the different types of check valves and their uses can help in selecting the right type of valve for a specific application.

Types of Check Valves and Their Uses

Types of Check Valve and Their Uses

Check valves are essential components in piping systems that allow fluid to flow in one direction while preventing it from flowing back in the opposite direction. They are commonly used in a wide range of industries, including oil and gas, water treatment, chemical processing, and food and beverage production. In this blog, we will discuss the different types of check valves and their uses.

  • Swing Check Valve The swing check valve is the most commonly used type of check valve. It consists of a disc that swings open and closed to allow or prevent fluid flow. The disc is attached to a hinge, which allows it to swing freely. Swing check valves are ideal for low-pressure applications, such as water supply and drainage systems.

  • Lift Check Valve The lift check valve uses a disc that lifts up to allow fluid flow and drops back down to prevent backflow. Lift check valves are ideal for applications where there is a higher pressure drop, such as in steam systems.

  • Tilting Disc Check Valve The tilting disc check valve uses a disc that tilts to allow fluid flow and returns to its original position to prevent backflow. This type of check valve is ideal for applications that require a quick response time, such as in firefighting systems.

  • Ball Check Valve The ball check valve uses a ball that rolls to allow fluid flow and sits in place to prevent backflow. Ball check valves are ideal for applications that require a low-pressure drop, such as in water supply systems.

  • Diaphragm Check Valve The diaphragm check valve uses a flexible diaphragm that flexes to allow fluid flow and returns to its original position to prevent backflow. This type of check valve is ideal for applications that require a tight seal, such as in chemical processing systems.

  • Dual Plate Check Valve The dual plate check valve uses two plates that open and close to allow or prevent fluid flow. The plates are spring-loaded to ensure a tight seal when closed. This type of check valve is ideal for high-pressure and high-temperature applications, such as in oil and gas production.

  • Wafer Check Valve The wafer check valve is a compact, lightweight valve that uses a disc that swings to allow fluid flow and closes to prevent backflow. This type of check valve is ideal for applications that require a low-pressure drop and minimal space, such as in HVAC systems.

In conclusion, the different types of check valves have unique features and advantages that make them suitable for specific applications. The selection of the right type of check valve is essential for ensuring efficient and reliable operation of piping systems. Understanding the different types of check valves and their uses can help in selecting the right type of valve for a specific application.

Manufacturing of a Ball Valve

Manufacturing of a Ball Valve

A ball valve is a type of quarter-turn valve that uses a hollow, perforated and pivoting ball to control the flow of fluid through it. Ball valves are commonly used in industrial applications where precise control over fluid flow is required. In this blog, we will discuss the manufacturing process of a ball valve.

Step 1: Design and Material Selection The first step in the manufacturing process of a ball valve is the design and material selection. The design of a ball valve is based on the specific application requirements, such as pressure rating, temperature range, fluid type, and flow rate. The material selection is also important to ensure that the ball valve can withstand the harsh environment of the application. Common materials used for ball valves include stainless steel, brass, and PVC.

Step 2: Raw Material Preparation Once the design and material selection are finalized, the next step is the preparation of raw materials. Raw materials are purchased in bulk, and then processed to the required shape and size. This may involve cutting, drilling, milling, and grinding of the material.

Step 3: Ball Formation The ball is the most critical component of a ball valve. The ball is formed from a round bar of the selected material. The bar is cut to the required length, and then heated to a high temperature in a furnace. Once the bar is heated to the correct temperature, it is placed in a forging press, which forms the ball into the required shape.

Step 4: Machining and Assembly The ball is then machined to the required size and shape. This involves drilling a hole through the center of the ball and machining the ball to the required tolerances. Once the ball is machined, it is assembled into the valve body. The valve body is typically made of two or three pieces, which are bolted together. The ball is then inserted into the valve body and secured in place using a stem and gland.

Step 5: Testing Once the ball valve is assembled, it is subjected to rigorous testing to ensure that it meets the required specifications. This involves pressure testing to ensure that the valve can withstand the maximum pressure of the application. The valve is also tested for leaks and flow control to ensure that it can provide the required performance.

Step 6: Finishing and Packaging The final step in the manufacturing process of a ball valve is finishing and packaging. The valve is cleaned, inspected, and then coated with a protective coating to prevent corrosion. The valve is then packaged and shipped to the customer.

In conclusion, the manufacturing process of a ball valve is a complex process that involves multiple steps, including design, material selection, raw material preparation, ball formation, machining and assembly, testing, finishing, and packaging. A well-designed and well-manufactured ball valve is essential for many industrial applications, providing precise control over fluid flow, durability, and reliability.

Importance of the Good Needle Valve in Industry

Importance of the Good Needle Valve in Industry

Needle valves are an important component in many industrial processes where precise control of fluid flow is required. They are commonly used in applications such as chemical and petrochemical processing, power generation, oil and gas production, and water treatment, among others. The needle valve is a type of flow control valve that is designed to regulate the flow of fluids with high precision and accuracy. In this blog, we will discuss the importance of a good needle valve in industry.

  • Precise control of flow rate One of the key advantages of needle valves is that they provide precise control over the flow rate of fluids. They have a long, tapered needle-shaped stem that can be adjusted to precisely control the flow of fluid through the valve. This level of control is essential in industries where the accuracy of fluid flow is critical, such as in chemical and petrochemical processing.
  • Resistance to high pressure and temperature Good needle valves are made of high-quality materials that are able to withstand high pressure and temperature. This makes them ideal for use in industries where fluids are transported under high pressure or at high temperatures. They are also able to resist corrosion and erosion, which extends their lifespan and reduces maintenance costs.

  • Versatility Needle valves are available in a wide range of sizes, materials, and configurations, which makes them highly versatile. They can be used in a variety of applications, from low-pressure systems to high-pressure systems, and from low-temperature systems to high-temperature systems. They can also be used with a wide range of fluids, including gases, liquids, and steam.

  • Leak-tight performance Good needle valves are designed to provide leak-tight performance, which means that they prevent the escape of fluid through the valve. This is essential in industries where the loss of fluid can have serious consequences, such as in the chemical and petrochemical industry. The leak-tight performance of needle valves is achieved through the use of high-quality materials and precise manufacturing processes.

  • Safety Needle valves are an important safety component in many industrial processes. They are designed to prevent over-pressurization of systems, which can lead to accidents and equipment failure. Good needle valves are able to relieve pressure in a controlled manner, which helps to prevent sudden releases of fluid and minimizes the risk of accidents.

In conclusion, the importance of a good needle valve in industry cannot be overstated. They are essential components in many industrial processes, providing precise control over fluid flow, resistance to high pressure and temperature, versatility, leak-tight performance, and safety. Investing in high-quality needle valves can improve the efficiency, reliability, and safety of industrial processes, and help to minimize maintenance costs and downtime.

Ball Valves: How it Works, Types, and Common Applications

ball valve manufacturer

Common Types of Ball Valves
In general, there are five types of ball valves that provide a similar function and are operated the same. The biggest difference, though, is in body construction and how the balls are contained in the assembly’s casing. Body styles include split body, top entry, single body, three-piece body and welded.

Plus, ball valves are also determined by the type of opening within the ball. Different types of bores result in added precision when turning off the valve, they can contain more than one open or closed setting, and they can be fashioned to prevent buildup behind the ball. The size of the bore, or port, can also be the same size as the pipeline or a reduced size, which results in a restricted flow. Bore types include:

Continue reading

International Standards Used In The Design Of Ball Valves

International Standards Used In The Design of Ball Valves

The design of ball valves involves the use of many international standards for producing high-quality products. These standards cover the materials, dimensions, tolerances, and marking for ball valves, ensuring that they can handle the pressures and temperatures they are designed for. Different countries use different standards which makes it important for the manufacturer located anywhere in the world to design and produce the proper product. Essentially, the functional design of the valve is fairly common though the end connections are country-specific or region-specific. For example, the projects executed by American companies normally have NPT threaded valves whereas the projects by European companies have BSP threaded valves. Similarly, the flanged connections on valves follow ASME or DIN standards depending upon American or European contractors. The Japanese have their own flange standards prefixed with JIS.

The British standard BS5351 was used extensively for ball valve design until it was replaced by ISO 17292 standard. API 6D is the American equivalent standard for ball valve design. Both the standards are similar in content except for some minor differences. In India, we generally use ISO 17292 standard in conjunction with ASME B16.34 standard. ISO 17292 provides all the necessary information- namely bore diameters for reduced and full bore ball valves as per pressure classes, the basic structure of ball valves for both floating and trunnion mounted, butt weld end and socket weld end dimensions, ball and stem design, seat selection depending upon temperature, testing procedure, markings on valves, etc. ASME B16.34 standard provides the wall thickness details depending upon the material of construction, pressure class, and temperature of operation of the valve.

Most ball valves used in India come with ASA flanges which have dimensions as per ASME B16.5 standard. This standard provides the dimensions of flanges depending upon the pressure class and size of the valve. Under the ASA regime, the pressure classes are specified by numbers such as 150#, 300#, 600#, 1500#, and 2500#. Each pressure class is suitable for working in a specific pressure and temperature range. DIN standards follow a more straightforward approach. The pressure classes are denoted as PN10, PN16, PN25, PN40, PN100, etc. which represent maximum working pressures in the bar.

There are projects executed by European contractors which have ball valves with DIN flanges. Replacement of DIN flanged ball valves with more commonly available ASA flanged ball valves require one-time replacement of pipeline flanges with suitable ASA flanges.

The distance to be maintained between two pipeline flanges is decided by the face-to-face length of the ball valve. This length is provided by ASME B16.10 standard. Valves manufactured in accordance with ASME B16.10 standards can be fitted and replaced with similar valves onto the pipelines whenever required.

Testing procedure for ball valves prior to dispatch is specified in BS6755 Part 1 and Part 2. BS6755 Part 1 gives the testing procedure for normal ball valves whereas Part 2 gives the Fire Safe Test procedure. Similarly, API 598 provides the required information for valve testing. API 607 provides the Fire safe test procedure.

Other important standards are ISO 5211 which provides the dimensional details for actuator mounting pads provided on valves. NACE MR0175 provides the requirements for crack-resistant material to be used in oil and gas environments containing H2S. ASME B16.11 standard gives the dimensional details for threaded ends, socket weld ends for fittings.

It is very important for a valve designer to understand the importance of designing valves as per the standards mentioned above. All valves which comply with the requirements specified by the customer and the corresponding constraints suggested by the standards become a reason for customer delight. In our pursuit to exceed customers’ expectations each time, every time, the Kavaata team takes special care to follow all the requirements set out by the International standards so that the product meets or exceeds our customers’ requirements.

Advantages of Using a Hydraulic System

Advantages of using a hydraulic system

Many industries use hydraulic systems because they have advantages over mechanical, electrical and pneumatic systems. They transmit power by using the pressure of an in-compressible fluid, usually oil, within a sealed system. They are used everywhere as you can see from the examples below:

 

• Cranes
• Forklifts
• Hydraulic jacks and presses which are used to crush cars
• Theme park rides,
• Aircrafts
• Rudders of boats
• Braking
• Power steering of cars.

Hydraulics are used in so many different things, and here are some of the reasons why.

They are simple to use, they have levers and push buttons which make it easy to start, stop, accelerate and decelerate. These controls also allow for accurate controlling.

Hydraulic systems are capable of moving heavier loads as well as providing greater force than mechanical, electrical or pneumatic systems. The fluid power system means it can easily cope with a large weight range without having to use gears, pulleys or heavy leavers. It provides constant force and torque, regardless of how fast it is going, something which isn’t possible in pneumatic, electrical or mechanical systems.

Proven to be far more durable than their electrical and mechanical counterparts. They work better, for longer and are less likely to break down or fail due to their much simpler and more robust design. The fact they have fewer moving parts than other systems means there is already less chance of a problem, but there is also the fact that the moving parts they do have are much more durable.

They tend to be more economical than electric or mechanical systems because they used fewer parts so they are much easier to maintain. Because they use less parts, it’s easier to find any problems your system may be having, making them quicker and easier to fix if they do break down. Hydraulic systems also need a lot less maintenance, only needing simple checks very infrequently, for example, replacement filters, and fluid samples to ensure everything is working properly.

Electric and mechanical systems however, require a lot more maintenance. They usually need lubricating around every 80 hours of operation as well as regular checks of power wiring and other operational checks. The failure of one component in these systems causes all other components in the chain to fail resulting in the breakdown of the whole machine.

Hydraulic systems use high density in-compressible fluid, which is less likely to leak than the gas in a pneumatic system is. This means maintenance costs would be lower with them.

They do not cause sparks so are safer to use and can be used in a wider variety of places, such as chemical plants and mines, where a fire hazard could be extremely dangerous. They are safer overall as there is much less of a chance of them becoming a fire hazard, which can be the case with other systems.

Electrical and mechanical systems tend to be noisy due to the many small, fast-moving parts, were hydraulic systems tend to be a lot quieter.

It has been found they perform well in hot environments, where other systems may overheat and stop working. Electrical systems especially can get extremely hot and generate an excessive amount of heat, which is not only dangerous to be around but this heat migrates to the surrounding environment, meaning that whatever room the system is in will be extremely hot. This would make for uncomfortable working environments for any people who have to work around them.

A much more environmentally friendly system, especially so if they are water-based. Electrical and mechanical systems consume significantly more energy. If environmental issues are a concern to you, hydraulic is the way to go as there are even a number of ‘environmentally friendly’ hydraulic fluids available.

There are many benefits to choosing hydraulic over other types of systems, if you think it might be the right option for you contact us today and we’ll be happy to help advise you on buying, installing and even designing your own hydraulic system.