Details of Hebei flange ductile iron signal elasti

2022-08-16
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Hebei flange ductile iron signal elastic seated gate valve manufacturer details

release date: Source: editor in charge: Manager Wang browse times: 84j - carton constant 5 copyright and disclaimer

core tip: special signal elastic seated gate valve for fire protection is often used in automatic sprinkler fire protection pipeline system. When it comes to boundary control water supply pipeline, it can indicate the valve opening remotely. Rising stem gate valve and gate valve with opening indication

special signal elastic seated gate valve for fire protection is often used in automatic sprinkler fire protection pipeline system. When it comes to boundary control water supply pipeline, it can indicate the opening of the valve remotely. The rising stem gate valve and the gate valve with opening indication are also often used in the fire protection system. If the installation position of the gate valve is high from the ground, the rising stem gate valve is generally used, which can obviously indicate the opening of the gate valve. If the installation position is low. Then it needs to pay the opening indicating gate valve. In addition to the advantages of elastic seated gate valve, the special rising stem elastic seated gate valve for fire protection can visually display the opening degree of the valve, so that the opening degree of the valve can be judged at a distance and corresponding measures can be taken in time. The opening and closing is fast and reliable, so it is often used in fire-fighting systems. The elastic seated gate valve can be equipped with various electric actuators according to the requirements of users to realize remote control and automatic control. It is sensitive, reliable and easy to install

generally, the resilient seated gate valves for fire protection are made of ductile iron. Nodular cast iron is a kind of cast iron. Nodular cast iron is treated by spheroidization and inoculation to spheroidal graphite, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, so that the strength of nodular cast iron is higher than that of carbon steel. Nodular cast iron is a high-strength cast iron material developed in the 1950s. Its comprehensive properties are close to that of steel. Based on its excellent properties, it has been successfully used to cast some parts with complex stress and high requirements for strength, toughness and wear resistance. Nodular cast iron has rapidly developed into a widely used cast iron material second only to gray cast iron. The so-called "replacing steel with iron" mainly refers to ductile iron. Ductile iron castings have been used in almost all major industrial sectors, which require high strength, plasticity, toughness, wear resistance and strict resistance

characteristics of signal elastic seated gate valve: the general gate valve used in the market for a long time has the phenomenon of water leakage or rust. The elastic seated gate valve produced by our enterprise by introducing European high-tech rubber and valve manufacturing technology overcomes the defects such as poor sealing and rust of general gate valves. The elastic seated gate valve uses the compensation effect of micro elastic deformation produced by the elastic gate to achieve good sealing effect. The valve has the advantages of light switching It has reliable sealing, good elastic memory and service life, and the flow direction of the medium is not limited, without disturbing the flow and reducing the pressure. It has the obvious advantages of simple shape, short structural length, good manufacturing technology and wide application range. The speed regulation range of 1~500mm/min is enough

the hoist of ductile iron gate valve is the ram, and the movement direction of the ram is perpendicular to the fluid direction. The gate valve can only be fully opened and closed, not adjusted and throttled. The ram has two sealing surfaces. The two sealing surfaces of Zui commonly used Mode RAM valve form a wedge, and the wedge angle varies with the valve parameters, usually 50, and 425 ℃ when the medium temperature is not high. The gate of wedge gate valve can be made into a whole, which is called rigid gate valve; It can also be made into a ram that can produce slight deformation to improve its processability and make up for the deviation of the angle of the sealing surface in the processing process. This kind of ram is called an elastic ram

the installation and maintenance of signal elastic seated gate valve should pay attention to the following matters:

1 The handwheel D is the diameter of the sample, and the handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited

2. The double gate valve shall be installed vertically (i.e. the valve stem is in the vertical position and the handwheel is on the top)

3. Before opening the gate valve with bypass valve, open the bypass valve (to balance the pressure difference between the inlet and outlet and reduce the opening force)

4. The gate valve with transmission mechanism shall be installed according to the provisions of the product operation manual

5. If the valve is often opened and closed, lubricate it at least once a month

Hebei Zhaofeng Valve Manufacturing Co., Ltd. is a comprehensive enterprise integrating scientific research, development, production and sales, specializing in the research and production of valve accessories. Its main products include: soft seal gate valve, grooved gate valve degradation principle, a large number of data search and research, grooved butterfly valve, hydraulic control valve, HVAC balance valve, antifouling block valve, exhaust, sludge discharge valve, check valve, filter, bellows compensator series products. The company continues to introduce and absorb advanced technology and management experience at home and abroad, and always pursues the business philosophy of "technology is the foundation, service is the key, talent is the foundation, and innovation is the soul". We sincerely welcome new and old users at home and abroad to visit and negotiate business. We will contribute to users and repay the society with realism, sincerity and win-win results

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