Soft seal gate valve, industrial valve. The opening and closing part of the soft seal gate valve is the gate plate. The movement direction of the gate plate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used model gate valve form a wedge shape. The wedge angle varies with the valve parameters. The nominal diameter is DN50~DN1200, and the operating temperature is: ≤200℃.
The y-type filter is an indispensable device used in water, oil, gas pipelines, and various equipment. It mainly removes the medium in the pipe to protect equipment such as pressure-reducing valves, pressure relief valves, fixed water level valves water pumps, etc. To achieve normal operation. When installing, please install it at the entrance. Generally, the water filter uses 10~30 mesh/cm², the air filter uses 40~100 mesh/cm², and the oil filter uses 60~200 mesh/cm².
The ball check valve uses a rubber-covered rolling ball as the valve disc. Under the action of the medium, it can roll up, down, left, and right on the integral slide in the valve body, thereby opening or closing the valve: silenced closing, no water hammer, and good sealing performance. The valve body adopts a full water flow channel, with a large flow rate and small resistance. The head loss is 50% smaller than that of the swing type. It can be installed horizontally or vertically. It can be used in cold, hot, and industrial and domestic water pipe network systems. It is more suitable for submersible drainage and sewage pumps. The medium temperature is 0~80℃.
The parts design of the rubber flap check valve mainly consists of three main parts: valve body, valve cover, and rubber flap.
The uses and characteristics of rubber flap check valves:
The rubber flap in the valve is made of a steel plate, steel rod, and reinforced nylon cloth as the backing, and the outer layer is covered with rubber. The valve flap has a service life of up to 1 million times. The H44X (SFCV) series rubber flap check valve adopts a full flow area design, which has the characteristics of small water head loss, not easy to accumulate debris, and easy maintenance. H44X (SFCV) series rubber flap check valves are mainly suitable for horizontally installed water supply and drainage systems. They can be installed at the water pump outlet to prevent backflow and water hammer damage to the pump. The H44X (SFCV) series rubber flap check valve can also be installed on the bypass pipe of the water inlet and outlet pipe of the reservoir to prevent the pool water from flowing back into the water supply system. Check valves are generally suitable for clean media and are not suitable for media containing solid particles and high viscosity.
A silent check valve refers to a valve that relies on the flow of the medium itself to automatically open and close the valve disc to prevent the backflow of the medium. It is also called a check valve, one-way valve, silent check valve, reverse flow valve, and back pressure valve. The check valve is an automatic valve whose main function is to prevent the backflow of the medium, the reverse rotation of the pump and drive motor, and the release of the container medium. Check valves may also be used on lines supplying auxiliary systems where the pressure may rise above the system pressure. Check valves can be mainly divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).
The butterfly valve has a simple structure, small in size, and lightweight, and is composed of only a few parts. Moreover, it only needs to be rotated 90° to quickly open and close, which is simple to operate. At the same time, the valve has good fluid control characteristics. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipe. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°. When it rotates to 90°, the valve is fully open. When the flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body. Therefore, the pressure drop generated by the valve is very small, so it has good flow control characteristics. Butterfly valves have two sealing types: elastic seal and metal seal. For elastic sealing valves, the sealing ring can be embedded in the valve body or attached to the periphery of the butterfly plate.
The eccentric semi-ball valve is a relatively new type of ball valve. It has some unique advantages due to its structure, such as no friction in the switch, the seal is not easy to wear, and the opening and closing torque is small. This allows the size of the actuator to be used reduced. Equipped with a multi-turn electric actuator, the medium can be adjusted and tightly cut off. It is widely used in petroleum, chemical industry, urban water supply and drainage, and other working conditions that require strict cutting.
① The fluid resistance is small, and its resistance coefficient is equal to that of a pipe section of the same length.
② Simple structure, small size, and lightweight.
High platform ball valves can be divided into straight-through type, three-way type, and right-angle type according to their channel position. The latter two ball valves are used to distribute media and change the flow direction of media.
The following matters should be paid attention to when installing and maintaining the three-piece ball valve:
① Leave a position for the valve handle to rotate.
② Cannot be used as throttling.
③ Ball valves with transmission mechanisms should be installed upright.
The groove butterfly valve adopts worm gear and worm drive, and then the cam rotates to press or release the contact on the signaling device according to the predetermined position, and the corresponding “on” and “off” electrical signals are output to display the opening and closing status of the butterfly valve. There are two types of groove butterfly valves: handle groove butterfly valve and turbine groove butterfly valve.
① Small and lightweight, easy to disassemble and repair, and can be installed in any position.
② The structure is simple and compact, and the 90° rotation opens and closes quickly.
③ The operating torque is small, labor-saving, and lightweight.
④ The flow characteristics tend to be linear and the adjustment performance is good.
⑤ The number of opening and closing tests can reach tens of thousands of times and the service life is long.
⑥ Achieve complete sealing, gas test leakage is zero.
