A fully welded ball valve is built with a high-pressure cap welded onto both sides. A pressure test valve is then installed, and a small amount of water is injected into the valve. This pressure is set to 1.5 times the nominal ball valve pressure and maintained for 15 minutes. This test is designed to measure a valve’s strength and sealability.
The difference between a standard and a fully welded ball valve is in the design. Both are made of the same material, but each one uses slightly different materials. A fully welded ball valve has a spherical or tubular stem. It has a stainless steel bearing covered with PTFE, which allows it to rotate smoothly.
A fully welded ball valve is used in extreme working conditions and offers high strength at a reduced weight. Its construction means that it can handle heavier loads and can be installed in multiple locations. A fully welded ball valve also has fewer leak paths than a standard ball valve.
There are several benefits of choosing a fully welded ball valve over a standard valve. Some of them include Full body design, Stainless steel construction, sealing grease injection system, and low maintenance. These benefits are worth considering before making the purchase.
Sealing grease injection system
A fully welded ball valve has a fully welded bonnet to eliminate leak paths and provides a seal to prevent leaks. This type of valve is also available in a variety of sizes and dimensional options. Fully welded ball valves are ideally suited for high-pressure service conditions, and they are suitable for a variety of industrial applications.
Fully welded ball valves have a fully welded body and are typically made of high-strength forge steel for the stem and trunnion. Fully welded ball valves are primarily used for natural gas applications and feature a zero-leakage design. In addition, these valves can be designed for underground installation.
Fully welded ball valves can be equipped with secondary sealant injection fittings. These are used to provide emergency seat sealing and to inject a temporary sealant. Drain valves and relief valve connections can also be used to flush out the sealing fluid. However, this feature must be specified in the bid.
Low maintenance
If you are looking for a fully welded ball valve that is low maintenance, you’ve come to the right place. These types of valves are designed with double valve seats to provide seal and isolation in the case of leakage. However, as with any valve, these seats will wear out over time. In some cases, the upstream valve seat will open and let some medium into the ball cavity, which then leads to further leakage. Fortunately, fully welded ball valves feature a pressure-release pipeline that leads out of the valve and leads to the ground. You can also open the valve’s shut-off valve to release the pressure in the middle cavity.
Fully welded ball valves combine high strength and reduced weight to provide maximum reliability. They’re especially useful in enclosed pipeline systems, and they meet all the major standards and approval guidelines. They’re designed to meet extreme demands and are available in series products or as special productions based on customer needs.
Stainless steel
A fully welded ball valve offers a combination of high strength and low weight, making them ideal for topside applications. Fully welded ball valves also minimize the risk of stress corrosion cracking due to high pressure and load. ATV manufactures a complete line of fully welded ball valves to meet the unique requirements of a wide range of applications. In addition to these benefits, fully welded valves have fewer leak paths than their side-entry counterparts.
Fully welded ball valves are available with multiple specifications for temperature and pressure. These valves meet the requirements of ISO 10497 and British standards. These valves are available in various materials, including stainless steel and graphite. Their anti-flying structure prevents the ball from disengaging and protects the valve from damage during switching.
Brass
A Brass fully welded ball valve can be used for a variety of applications, including the lubrication of hydraulic fluids. Its full port configuration can be either fully or partially welded, and it can be manufactured from various material grades. Some of the materials that are commonly used for ball valves include carbon steel, stainless steel, and duplex steel.
Fully welded ball valves are generally available in sizes of up to DN 800 and are used for cooling and district heating. They are also used in specialized applications like hot-tapping equipment. Pipeline construction and apparatus engineering are two other areas where fully welded ball valves can be used. They can be customized to accommodate a wide range of stem diameters.
A fully welded ball valve offers superior protection against corrosion. It is designed to withstand high loads and prevent stress corrosion cracking on the weld seam. A fully welded ball valve offers an extended lifespan and minimal maintenance requirements. This makes it an excellent choice for buried pipelines. These valves are made from corrosion-resistant materials and undergo various testing procedures to ensure their durability. They are inspected visually with magnet particles and undergo ultrasonic and radiographic examinations.
PVC
When installing a ball valve, there are some important differences between a standard ball valve and a fully welded ball valve. One of the most noticeable differences is the design. A standard ball valve has a ball that is flat and not v-shaped. This design allows for a linear flow characteristic and a more controlled opening. Another difference is the type of seat. A v-shaped seat is used in a ball valve that requires high operating pressure.
The fully welded ball valve uses a support plate structure that is similar to a pipeline. This minimizes operating torque and extends its service life. Additionally, this valve is easier to install and maintain and does not require a deep valve well. Its lightweight design allows for easy installation and easy insulation. It also features a 20-year warranty.
XINTAI Valve is a professional manufacturer of industrial valves and is an API-certified manufacturer. Its extensive product range includes globe, ball, and control valves. It also manufactures a wide range of specialty valves, including cryogenic, power stations, and oxygen valves. Additionally, it has developed several new patent certificates for its valves and has numerous other certifications.
The company adheres to the concept of “intelligent manufacturing” and offers excellent customer service. It also has strong product development capabilities and a scientific research team. This allows it to provide a comprehensive range of products and services. These products include the Stainless Steel Thread Globe Valve, which is made from stainless steel and has a straightforward structure that is suitable for a variety of applications.
