News Center

NEWS CENTER

News Center

Company News

Company Training

Company News

Industry News

Key points for installing and the working principle of large-caliber gate valves
NEW

2023-06-09

Key points for installing and the working principle of large-caliber gate valves

Large-diameter gate valves are suitable for small-diameter pipelines rated from Class 150 to 2500, with operating temperatures ranging from -29°C to 425°C (for carbon steel) or -29°C to 500°C (for stainless steel). These valves are designed to either shut off or fully open the flow of media within the pipeline. By selecting different materials, they can handle a wide variety of fluids, including water, steam, oils, nitric acid, acetic acid, oxidizing media, urea, and more. They are particularly commonly used in petroleum pipelines.

View details

How an Ammonia Globe Valve Works and How to Use It
NEW

2023-06-09

How an Ammonia Globe Valve Works and How to Use It

The high-pressure chamber of the ammonia valve is connected to the cylinder, while the low-pressure chamber serves as the gas outlet, leading directly to the application system. The high-pressure gauge indicates the pressure of the gas stored inside the cylinder. Meanwhile, the outlet pressure on the low-pressure gauge can be precisely controlled using the adjusting screw.

View details

Installation Method for Lift-Type Check Valves
NEW

2023-06-09

Installation Method for Lift-Type Check Valves

The function of a check valve is to allow the media to flow in only one direction, while preventing backflow. Typically, these valves operate automatically: when fluid flows in the forward direction, the pressure pushes the valve disc open; however, if the fluid tries to flow backward, the combined force of the fluid pressure and the disc’s own weight closes the disc against the valve seat, effectively stopping the flow. Among the types of check valves, the internal-threaded check valve and the butterfly check valve fall into this category. Specifically, they include two subtypes: the swing check valve and the lift check valve. The swing check valve features a hinged mechanism and a door-like disc that rests freely on an angled valve seat surface. To ensure the disc always lands precisely at the right position on the seat, the design incorporates a hinge system that provides ample clearance for the disc to swing open and closed—allowing full, even contact with the seat. The disc itself can be made entirely of metal, or it may have a resilient lining—such as leather, rubber, or even a synthetic coating—depending on the specific performance requirements of the application. When fully open, the swing check valve offers minimal resistance to fluid flow, resulting in a relatively low pressure drop across the valve. In contrast, the lift check valve has a disc that sits directly on the sealing surface of the valve body’s seat. Like a globe valve, this type of check valve allows the disc to move freely up and down. When fluid flows in the forward direction, the pressure lifts the disc off the seat, permitting flow. Conversely, if backflow occurs, the disc returns to its seated position, blocking the reverse flow. Depending on the operating conditions, the disc can either be constructed entirely of metal or fitted with a rubber gasket or rubber ring mounted on a disc holder. Similar to globe valves, the flow path through a lift check valve is narrower, which leads to a slightly higher pressure drop compared to the swing check valve. Additionally, the swing check valve imposes far less restriction on flow, making it more efficient for applications requiring unrestricted passage.

View details

< 12 >

Right-side online customer service widget

SAF Coolest v1.2 设置面板GAGSE-ZGYF-JVSVE-ZFF

违禁词： First, top-notch, leading-edge, pioneering, unparalleled, king-like, industry leader, trailblazer, and exceptional.
营业执照及SEO链接： Business license

无数据提示

Sorry, there is currently no content in this section.!

You can view other sections or return toHome Page

SVG图标库请自行添加图标，用div包起来，并命名使用