Valves are one of the common devices used in both industrial and daily life. Different types of valves have different characteristics and application scenarios. Knowing that about various valve types can help us better select and use valves, improving the operational efficiency and safety of equipment. Accident Caused by Valve Fracture On one date of…
The ball is the opening and closing part of the ball valve. The ball rotates around the center line of the valve body to open and close the ball valve. The ball valve can cut off, adjust, distribute and change the flow direction of the medium in the pipeline. Ball valve has many advantages and…
Analysis of the sealing problem of high temperature butterfly valve The sealing performance of valve refers to the ability of valve sealing pair to prevent medium leakage. This is an important technical performance index of the valve. The sealing pair of butterfly valve is continuously developing and changing. The double eccentric butterfly valve uses the force exerted…
Gate valves are in various structural forms, among which the common ones are wedge-type double gate, parallel single gate, parallel double gate, rigid gate, H-type elastic single gate. What are their merits and drawbacks? The Wedge-type Double Gate Valve Advantaged with a low precision requirement for the wedge angle and a well abrasion resistance under…
Evolutionary History of Butterfly Valve In our daily life and production, pneumatic butterfly valve plays an important role. It is a kind of valve with great function. The appearance of pneumatic flange butterfly valve promotes the efficiency of production to a great extent. It is a kind of valve that revolves around the valve axis to open and close. It…
Pneumatic ball valve has been widely used in power generation, paper making, petroleum, chemical industry, atomic energy, aviation, rocket and other industries, as well as people’s daily life. Today, let’s share the relevant knowledge of the classification of pneumatic ball valves! I. Overview of Pneumatic Ball Valve Pneumatic ball valve is a ball valve equipped…
There are two seat sealing rings in the valve body of the floating ball valve. A sphere is clamped between them. There are through holes in the sphere. The diameter of through holes is equal to the inner diameter of the pipeline. It is called full-diameter ball valve. The diameter of through hole is slightly smaller than…
1. Introduction of flanged end butterfly valve Flanged end butterfly valve is a kind of butterfly valve. It is the same as the wafer butterfly valve, which is another common connection method of butterfly valve, and has a wide range of uses. The flanged end butterfly valve is mainly used in industrial production pipelines. Its function is…
When the electric ball valves are used, it is expected that they can work stably for a long time. But the use of the equipment has a certain life cycle. As a user, we can take some measures to extend the service life of the electric ball valve. This article will discuss in detail how…
As we all know, a gate is the opening and closing part of the cast steel gate valve. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and closed, but cannot be adjusted or throttled. 1. Gate of cast steel gate valve…
1、Check that the ball valve is in full open position After grease injection, check whether the diameter of the valve ball is flush with the plane of the inner chamber of the valve seat. If there is any difference, adjust the open limit bolt on the actuator to ensure that the international valve is fully open. Otherwise,…
Manual / electric soft-sealed butterfly valve is suitable for pipelines whose medium is water, seawater or oil. It is mainly used as a globe valve to cut off the medium to protect the pipeline system. Manual butterfly valve or electric butterfly valve is mainly composed of butterfly valve body, manual device or electric device. Soft seal butterfly valve implementation standard…
There are nine commonly used materials for valve bodies：
The butterfly valve is popular because of its fast opening and closing speed, self-sealing tendency and light weight. It is widely used in large and medium caliber equipment in medium and low pressure. Especially in recent years, the butterfly valve with three-dimensional eccentric hard sealing has greatly improved the working temperature of butterfly valve. In…
Electric ball valve is a new type of ball valve, which can also be called electric actuated ball valve. It has some unique advantages of its own structure. For example, the switch has no friction, the seal is not easy to wear and tear, and the opening and closing moment is small. This reduces the…
1.The structure of block valve and gate valve Notes for the type selection in the case of limited installation space The gate valve can rely on the medium tightly pressing on the sealing surface, so as to achieve the nonleakage. However, the spool constantly scrapes the sealing surface of the seat, which easily wear the…
What are technical difficulties of high-temperature triple-eccentric metal hard-sealing butterfly valve? What are the problems encountered in its design and development? How to solve them? The technical difficulties of high-temperature triple butterfly valve include the following aspects: The solutions mainly includes the following parts:
The following valve installation for you to explain the matters needing attention.
Manual ball valve is a new type of ball valve. It has some unique advantages of its own structure. For example, the switch has no friction. It’s sealed and it does not wear easily. The opening and closing moment is small. This reduces the size of the actuator. With multi-rotating electric actuator, the medium can…
Double eccentric butterfly valve is usually called high performance butterfly valve, which is further improved on the basis of single eccentric butterfly valve, and is currently the most widely used butterfly valve. Sealing principle of double eccentric butterfly valve. Since the rotary center of the valve plate (i.e. the center of the valve shaft) and…
Electric butterfly valve is suitable for situations requiring flow regulation. The pressure loss of butterfly valve in the pipeline is relatively large, about three times that of gate valve. Therefore, when choosing butterfly valve, The structure length and overall height of butterfly valve are small, opening and shutting speed is fast, and it has good fluid control characteristics. The…
A check valve is a valve that has a circular disc as the opening and closing part and blocks the backflow of the medium by its own weight and the pressure of the medium. It belongs to the category of automatic valves, also known as non-return valves, one-way valves, return valves or isolation valves. Check…
I. Present situation and analysis of ball valve sealing The cast stone ball valve is an ideal opening and closing device in the ash pipeline, and its sealing directly affects the quality and service life of the valve. In the past, the O-shaped rubber seal structure was adopted, which means the O-ring was put into…
1.Maintenance and management during construction. It is very important to manage and maintain the ball valve scientifically in the construction period. In the construction period, the equipment management and scientific maintenance can not only ensure safety, but also greatly reduce cost of construction and operation management period. We should pay attention to the following aspects….