The ball valve may have an internal leakage during use or installation. Due to the frequent switch in use, or failure to install as required, the ball valve may not work properly. In the following part, Xhvalve will explain the reasons and solutions for the leakage of the ball valve. 1. Causes of ball valve internal leakage 1） During construction: ① Improper transportation and hoisting damage integral valve, leading to internal leakage of the valve; ② When leaving the...
Causes and Solutions of Ball Valve Internal Leakage Read
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In daily life, we often see a variety of butterfly valves. The shape and function are different of each kind of butterfly valve. Next, this article will introduce the difference between these butterfly valves. 1. Concentric Butterfly Valves: The butterfly valve is characterized in that the valve stem axis, the butterfly plate and the body are at the same position. The structure is simple and convenient to manufacture. A common rubber valve belongs to this category. The disadvantage...
What are the Differences Between Common Butterfly Valves? Read
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Principles of choosing valves for water pipeline 1. When the diameter of a pipe is less than or equal to 50mm, choose globe valves, whereas when the diameter is more than 50mm, use gate valves or butterfly valves. 2. When the adjustment of flow rate and pressure of media is needed, it is better to use control valves or globe valves. 3. For parts that require low flow resistance (like the suction pipe of a water pump), choose gate valves. 4. Use gate valves, butterfly valves, rather than...
Valves for water supply pipeline and their installation positions Read
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A installation guide of a pneumatic butterfly valve, a type of butterfly valve, including installation requirements, tips, procedures, and precautions: 1. Before installation, make sure you have every part of the pneumatic butterfly valve with the exact model number, no impurities in the valve body, no clogging in the solenoid valve and in the valve silencer. 2. Shut down the valve and air cylinder. 3. Push the air cylinder to the valve, (Either being parallel or perpendicular...
Pneumatic butterfly valves installation guide Read
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The appearance of a ball valve was after the Second World War. Although the invention of a ball valve dates back to the early 20th century, this structural patent failed to complete its commercialization steps due to limitations in the materials industry and the mechanical processing industry. DuPont in the United States invented a high polymer material polytetrafluoroethylene (PTFE) plastic until 1943. This kind of material has advantages of sufficient tensile and compressive strength,...
Introduction of ball valves Read
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The definition, characteristics and classification of butterfly valves A butterfly valve is a rotary valve which is open or closed by rotating a disk-shaped, circular or rectangular closure member for about 90 or 90 degrees. The butterfly valve is an old valve. It was only used for adjustment in the early stage due to its poor sealing performance. For example, the flue valve is an adjustment butterfly valve. With the advent of elastomeric sealing materials such as synthetic rubber and the in-depth...
The definition, characteristics and classification of butterfly valves Read
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Xinhai Valve is going to participate in the 11th Valve World Conference 2018 in Germany, and our booth number is 3D01. You are very welcome to come and negotiate valve business with us. Exhibition information Exhibition date: November 27-29, 2018 Venue: Messe Düsseldorf Exhibition Center, Germany Exhibition cycle: Every two years Organizer: Beijing Linhui International Exhibition Co., Ltd. The overview of the exhibition The Dusseldorf International Valve World Expo is the only professional...
Xinhai is going to participate in the Valve World Conference & Expo 2018 Read
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A thread valve is the valve with the thread and can be classified into the internal thread valve and the external thread valve. This kind of valve is connected to the pipeline with the threaded connection. The valve, generally, has the small diameter and is used for engineering projects under normal pressures and low pressures. At the same time, under high pressures, the thread valve is required to be operated with the welded connection or the flange connection. Common types of thread valves include...
What are Thread Valves? Read
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A check valve is divided into the swing check valve (rotating around its center of gravity) and the lift check valve (moving along the axis). The check valve is one kind of the automatic valves, mainly used for preventing the black flow of media, the leakage of the media from containers and the inversion of pumps and drive motors. Furthermore, the check valve can be used for the pipeline supporting assistant systems with the pressure higher than the system pressure. In order to ensure that the valve...
An Introduction of Swing Check Valves Read
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Event: 2017 China (Zhengzhou) International Water Equipment and Technology Exposition Venue: Central China International Expo Center (No.210, Zheng Bian Road, Zhengzhou City, Henan Province) Date: 2017.07.18-2017.07.20 Organizer Water Engineering Association Co-organizer Hydraulic Engineering Society of Henan Province Pump Industry Association of Henan Province Contractor Beijing Zhiwei International Exhibition Co., Ltd. Exhibits Irrigation & Drainage: pumps, valves, pipes, etc. Water Saving:...
2017 China (Zhengzhou) International Water Equipment and Technology Exposition Read
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