Blog

13

2019

/

06

Flame spraying process flow of valve seat sealing surface

The preparation work before the valve spray welding, surface pretreatment, valve spray welding, valve spray welding after treatment. Preparation before spray welding of 1. valves: determination of spray welding materials, spray welding tools, spraying equipment and processes. 1. Determine the thickness of the coating. Generally speaking, the valve must be machined after spray welding, so the coating thickness should be reserved for machining allowance, and the thermal expansion and contraction of the valve during spray welding should also be taken into account. 2. Determination of coating material. The selection basis is that the coating material should meet the material, technical requirements and working conditions of the valve spray welding workpiece, and the material of the bonding layer and the working layer should be selected respectively. 3. Determine parameters: pressure, powder particle size

30

2019

/

05

Flange valve installation

Flange valve is connected to the flange of the valve, the valve body with flange, and pipe flange connection, common flange gate valve, flange globe valve and so on, most of the valves can be used flange connection. Flange valve installation instructions: 1. The verticality between the flange surface on the pipe and the center line of the pipe and the error of the flange bolt hole should be within the allowable range. The valve and the center line of the pipe should be consistent before installation. 2. Flange faces of valves and piping shall be free of damage, scratches, dirt, etc. Especially when the metal gasket is used, the groove of the flange should be consistent with the gasket to ensure that it is in good sealing condition. 3. Tightness of flange

27

2019

/

05

Examples of repairs to high-pressure gate valves, check valves, etc.

Wuhan Xiete Valve Technology Co., Ltd. has a high-pressure test station and corresponding testing equipment with mature repair experience. Professional technical teams make professional repair solutions for different valves and different caliber sizes. We will continue to provide customers with more thoughtful, more detailed and higher-level valve repair services.

21

2019

/

05

The difference between internal thread valve and external thread valve

Threaded valve (also called thread valve, threaded valve or internal valve) generally refers to the valve body with internal thread or external thread of the valve, mainly divided into internal thread valve and external thread valve, the use of threaded connection and pipe corresponding. Generally, threaded valves can only be made with small diameters and are used for normal pressure or low pressure projects. If they are not available for high pressure work, they need to be used by welding link valves or flange connection valves. Common threaded valves are: threaded gate valve, threaded ball valve, threaded globe valve, threaded check valve. The difference between internal thread valve and external thread valve: from the use: due to the price, work flow needs, most of the market

05

2019

/

05

Different types of gate valves

Gate valve is also called gate valve, mainly by the body, bonnet, gate, stem, seat and seal packing and other parts, is one of the most common types of valves. The main purpose of the gate valve is to cut off the fluid, and it is for this reason that it is often called a "cut-off" valve or a "block" valve. Gate valves have many different structural forms, and the types of sealing elements used are different. According to the structure of the sealing element, it can be divided into several different types. According to the classification of stem: according to the type of stem can be divided into open stem gate valve and dark stem gate valve. The valve stem is the operating part of the gate valve, and its function is to transmit the opening and closing force to the opening and closing parts. 1. Ripper gate valve and its valve

19

2019

/

04

Electric control valve structure characteristics and working principle

The electric regulating valve is mainly composed of an electric actuator and a regulating valve body. By receiving signals from the industrial automation control system, the valve is driven to change the cross-sectional area between the valve core and the valve seat, and the flow, temperature, and pressure of the pipeline medium And other process parameters to realize remote automatic control. The equal percentage characteristic is the best, and it has the characteristics of stable adjustment and good adjustment performance. Electric control valve structure features: 1, the use of deep dynamic negative feedback, can improve the accuracy of automatic adjustment. 2, the electric operator has a variety of forms. 3. The adjustable range is large, and the flow characteristics are linear and equal percentage. 4, electronic electric control valve can be directly by the current

01

2019

/

04

Material of stainless steel flange

Stainless steel flange material is made of different models and different uses, chemical composition and production. Stainless steel can be generally classified according to its use, chemical composition and metallographic structure. 1. stainless steel flanges are classified by chemical composition: 1. CR series: ferrite series, martensite series 2. CR-NI series: austenite series, abnormal series, precipitation hardening series. 2. stainless steel flanges are classified by metallographic structure: 1, austenitic stainless steel 2, ferritic stainless steel 3, martensitic stainless steel 4, duplex stainless steel 5, precipitation hardening stainless steel 3. stainless steel flanges have the following materials: 1, material 301-

25

2019

/

03

Electric actuator classification

Electric actuator, also known as electric actuator, is a kind of actuator with electric power as driving energy. It uses some kind of driving energy and works under the action of some kind of control signal, and is applied to various industrial automation process control links. The application in industrial production is more extensive than pneumatic actuator and hydraulic actuator. There are many types of electric actuators, which are called valve electric devices in the industrial pipeline valve industry and electric actuators in the instrument industry, but there is no clear distinction between them. It can be used in complete sets with various valves. The functions and operation modes of the valves are different. Electric actuators and valves can constitute electric valves or electric valves.

< 1...404142...65 >
WeChat Public Number
Mobile phone official website
WeChat Public Number

Cookie

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

Cookie

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

These cookies are necessary for basic functions such as payment. Standard cookies cannot be turned off and do not store any of your information.

These cookies collect information, such as how many people are using our site or which pages are popular, to help us improve the customer experience. Turning these cookies off will mean we can't collect information to improve your experience.

These cookies enable the website to provide enhanced functionality and personalization. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.

These cookies help us understand what you are interested in so that we can show you relevant advertising on other websites. Turning these cookies off will mean we are unable to show you any personalized advertising.

Contact Information

+86 27-8970 8339

Tel: +86 27-8970 8619

WhatsApp: +86 181 7126 2929

E-mail: whylgd@vip.163.com

Address: No.5, Zhengjie, Shuangliu Street, Xinzhou District, Wuhan City, Hubei Province