What is the difference between flange connection and clamp connection for valve connection

For valve connectionFlange connectionOf course, there is a difference with the clamp connection, that is, the connection method is different. 1.Flange connection

Valve is a mechanical device that controls the flow, direction, pressure, temperature, etc. of the flowing fluid medium, and the valve is the basic component of the pipeline system. Valve fittings are technically the same as pumps and are often discussed as a separate category. The valve can be operated manually or with a handwheel, handle or pedal, and can also be controlled to change the pressure, temperature and flow rate of the fluid medium.

These changes can be operated continuously or repeatedly, such as safety valves installed in hot water systems or steam boilers.

In more complex control systems, automatic control valves are used as needed to regulate the changing set points of flow through the pipes based on external inputs. The automatic control valve does not need to be operated manually, according to its input and settings, so that the valve can accurately control the requirements of the fluid medium.

Flange connection: Two flanges should be welded at the connection of the pipe, so that it can be connected with the [Jindian Valve] valve.

The control of the valve can adopt a variety of transmission methods, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic, electrohydraulic, pneumatic, spur gear, bevel gear drive, etc.

Under the action of pressure, temperature or other forms of sensing signals, it can act according to predetermined requirements, or simply open or close without relying on sensing signals, and the valve relies on a drive or automatic mechanism to make the opening and closing parts lift, slide, swing or slew movement, so as to change the size of its flow channel area to achieve its control function.

Valve Introduction:

Valve is a device used to control the direction, pressure, and flow of fluid in the fluid system, and is a device that makes the medium (liquid, gas, powder) in the piping and equipment flow or stops and can control its flow.

The valve is a control component in the pipeline fluid transportation system, which is used to change the channel section and the direction of medium flow, and has the functions of diversion, cut-off, throttling, check, diversion or overflow pressure relief. Valves for fluid control range from the simplest shut-off valves to a wide variety of valves used in the most complex automation systems.

The nominal diameter of the valves ranges from very small instrument valves to industrial pipeline valves with a diameter of up to 10 m. It can be used to control the flow of various types of fluids such as water, steam, oil, gas, mud, various corrosive media, liquid metal and radioactive fluids, the working pressure of the valve can be from 1000MPa to ultra-high pressure, and the working temperature can be from C-270 ultra-low temperature to 1430 high temperature.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

1) Clamp connection: the ends of the two nozzles should be flat and seamless, the width of the groove should be uniform, the pipe should be straight after clamping the bolts, and the installation direction of the clamp should be consistent. 2) Flange connection:

The liner should not protrude into the tube, and its outer edge should be close to the bolt hole. Do not place double or partial pads. 3) Flange bolts:

The diameter and length should be in accordance with the standard, and after tightening, the length of the protruding nut should not be greater than the diameter of the screw 1 Pipes with rubber rings at the interface: the pipes are allowed to be laid along the curve, and the maximum deflection angle of each interface shall not exceed 2°.

Flange connection is a commonly used connection method in valves. The sealing ring is installed on the inner cone, and the opposite side of the medium is at a certain angle, and the pressure of the medium is transmitted to the inner cone, and then to the sealing ring. On the cone at an angle, two forces are generated, one parallel to the core line of the valve body, and the other is pressed against the inner wall of the valve body.

This component behind is the self-tightening force. The greater the pressure of the medium, the greater the self-tightening force. Therefore, this connection is suitable for high-pressure valves.

The connection valve is essentially a flange, which should be a flange connection. Except for special, the specification stipulates that galvanized pipes, plastic-lined steel pipes, steel-plastic composite pipes, etc. shall not be welded and flanged connections, if this is the case, it should belong to the clamp connection method.

Personally, I think that the flange is the main material, and the clamp belongs to the auxiliary material, which should be calculated separately.

The clamp connection gate valve is the same as the flange connection, it is a connection method, not a flange!

Clamps. It is connected by threads or card slots, and the flange needs 2 pieces in 1 group, which is connected by bolts.

A clamp is a connecting device that connects grooved pipe fittings, valves, and pipe fittings. It is used to tighten the clamp between the quick couplings, and generally the two joints are equipped with gaskets.

There is rubber, and silicone, tetrafluorine.

A flange is a part that connects between pipes and pipes, and is used for the connection between pipe ends; There are also flanges used on the inlet and outlet of the equipment, which are used for the connection between two equipment, such as the reducer flange. Flange connection or flange joint refers to the detachable connection of flanges, gaskets and bolts connected to each other as a set of combined sealing structures.

There are two different connection methods.

The clamp connection is easy to operate and is a flexible connection that can be easily removed without damaging the connector. Modern craftsmanship.

The flange connection has been used for many years, and the rigid connection is connected with the connector flange through the bolt, which can meet the high strength and pressure of the part.

The clamp is used for civil air defense (fire protection) and other occasions that need to be installed quickly, and when the pressure is particularly high or the working temperature is harsh, and the preload of the flange bolt cannot ensure that the flange sealing surface does not leak, the clamp will be selected, such as: API 6A valve (4500lb), high temperature and low temperature.

Flange connection equipment generally does not need to be disassembled and assembled within a stable time, but it needs to be repaired and replaced regularly, such as annual repair of pipelines.

When the service life of the equipment is very long, it is not allowed to be replaced for a long time. Generally, welded connections are used.

The clamp has no eyes, the flanges do.

The groove flange pipe clamp and the pipe can only be connected by groove, and one end cannot be directly connected to the flange gate valve. For direct connection, only grooved gate valves can be connected.

Groove connection is a new type of connection, also known as clamp connection, which is different from flange connection.

The groove connection pipe fittings that play the role of connection and sealing are mainly composed of three parts: sealing rubber ring, clamp and locking bolt. The rubber seal on the inner layer is placed on the outside of the pipe to be connected and fits the pre-rolled groove, and then the clamp is fastened on the outside of the rubber ring and then fastened with two bolts.

Due to the unique sealable structure design of its rubber sealing ring and clamp, the groove connection has good sealing, and its sealing performance is correspondingly enhanced with the increase of fluid pressure in the pipe.