Cast Iron Gate Valve with Metal Seat

Cast iron metal sealed seat Gate Valve : The main force for the opening and closing control of pipelines with rigid sealing

The Cast Iron Gate Valve with Metal Seat, with its rigid structure made of cast iron and the tight performance of the metal sealing seat, has become the core opening and closing element of the medium and low pressure pipeline system. It achieves sealing through the precise fit between the gate plate and the metal seat, featuring both pressure resistance and wear resistance. Rubber Expansion Joint, Bellow Expansion Joint, Flexible Metal Hose, Dismantling Joint, Flange Adaptor, Duckbill Check Valve and other accessories work together to provide reliable opening and closing control solutions for pipeline systems in fields such as municipal water supply and industrial circulating water. ​

Material and sealing: Dual guarantee of cast iron rigidity and metal sealing

The Cast Iron material endows the Cast Iron Gate Valve with Metal Seat with excellent rigidity and pressure resistance performance, capable of withstanding the long-term pressure load of medium and low pressure pipelines. Its structural stability echoes the metal rigidity compensation characteristics of the Bellow Expansion Joint. In the main municipal water supply pipes, the Valve Body of the cast iron gate valve can resist daily water pressure fluctuations. Combined with the Flange Adaptor, it can achieve sealed connections with different pipes, while the Duckbill Check Valve prevents water backflow. The three work together to ensure the stability of the pipe network pressure. ​

The metal sealing seat is the core sealing guarantee of the gate valve. The gate plate and the metal seat are precisely processed. When closed, they fit closely to achieve a tight seal. The leakage is much lower than that of ordinary soft-sealed valves. This rigid sealing advantage is particularly obvious in high-temperature pipelines. In the branch control of industrial steam pipelines, the cast iron metal sealed seat gate valve can withstand the high temperature of steam, cooperate with the Bellow Expansion Joint to compensate for the thermal displacement of the pipeline, and the Rubber Expansion Joint absorbs the vibration of the boiler, jointly ensuring no leakage in steam transportation. ​

Structural feature: The opening and closing logic of the gate plate's lifting

The Cast Iron Gate Valve with Metal Seat achieves the opening and closing of the pipeline through the vertical lifting of the gate. When fully open, the gate is completely retracted into the valve cavity, resulting in extremely low fluid resistance. The flow channel design is consistent with the low flow resistance characteristics of the Flexible Metal Hose . In industrial circulating water systems, this low-resistance feature can enhance the efficiency of water pumps. When used in conjunction with Dismantling Joint, the valve can be disassembled separately during later maintenance without disassembling the entire pipeline, significantly reducing maintenance costs. ​

The transmission structure of Gate Valves mostly adopts handwheel drive. Through trapezoidal threads, the rotational motion is converted into the linear lifting and lowering of the gate plate. The operation is effortless and the opening and closing are precise. In the control of the main canal for agricultural irrigation, the cast iron gate valve can precisely adjust the irrigation water volume through the handwheel. Combined with the field branch pipe of the Flexible Metal Hose, it ADAPTS to the terrain changes to achieve uniform irrigation. The Rubber Expansion Joint absorbs the water hammer impact when the water pump starts and protects the valve sealing surface. ​

Scene adaptation: The main force for opening and closing medium and low-pressure pipelines

Municipal infrastructure is the core application scenario of Cast Iron Gate Valve with Metal Seat. In urban drainage networks, cast iron gate valves control the separation of rainwater and sewage. Metal sealing seats can resist the wear of impurities in sewage. They are connected to drainage pipes of different diameters with Flange adaptors. Youdaoplaceholder0 joints facilitate maintenance and inspection before the flood season and ensure smooth drainage. At the outlet pipe of the clear water tank in the waterworks, the gate Valve regulates the water output, and the Bellow Expansion Joint compensates for the thermal expansion and contraction of the pipe. The Duckbill Check Valve prevents the backflow of clear water and pollution of the water source. ​

Medium and low-pressure pipelines in the industrial field also rely on cast iron metal sealed seat gate valves. In the transportation pipeline of low-concentration media in the chemical industry, the gate valve controls the on-off of raw materials. The corrosion resistance property of the metal sealing seat can resist the erosion of slight media. Combined with the corrosion-resistant Rubber material of Rubber Expansion Joint, a sealing passage is formed through the Flange Adaptor. In the compressed air pipeline of the air compressor, the gate valve regulates the air volume and is connected to the pressure-resistant Flexible Metal Hose to adapt to the vibration displacement of the equipment and ensure the stable operation of the pneumatic system. ​

System collaboration: Efficiency upgrade of accessory linkage

In a complete piping system, the synergy effect of Cast Iron Gate Valve with Metal Seat and other accessories is significant. In the fire protection pipelines of high-rise buildings, the gate valve, as a zonal control valve, cooperates with the Bellow Expansion Joint to compensate for the thermal displacement of the pipeline. The Flange Adaptor ensures a sealed connection with the fire protection pipeline and can be quickly opened to ensure water supply in case of fire. Youdaoplaceholder0 Joint is installed at the front end of the valve, facilitating daily maintenance and inspection. ​

In the cooling water pipeline of the thermal power plant, the cast iron Metal sealed seat gate valve regulates the cooling water volume, and the Rubber Expansion Joint absorbs the vibration of the water pump. The temperature measurement device connected to the Flexible Metal Hose monitors the water temperature in real time. The three work together to improve the efficiency of the cooling system. Its metal sealing characteristics can still maintain sealing performance under the long-term erosion of circulating water, and its service life far exceeds that of ordinary soft-sealed valves. ​

Cast Iron Gate Valve with Metal Seat, with the rigidity advantage of cast iron material and the tight performance of metal seals, has become the main force for opening and closing in medium and low pressure pipeline systems. It works in coordination with various Pipe Fittings. Through precise opening and closing control, reliable sealing performance and convenient maintenance features, it provides a solid guarantee for the safe operation of pipelines in municipal, industrial, agricultural and other fields, and demonstrates stable and efficient performance in key links of fluid control. ​

A cast iron gate valve is a type of valve that offers characteristics such as low flow resistance, a relatively tall profile, and a long opening/closing time. However, a drawback is that it is not convenient for maintenance. There are two main types of cast iron gate valves: the wedge gate valve and the parallel gate valve.

The closing and opening member of a gate valve is the gate. The movement direction of the gate is perpendicular to the direction of the fluid flow. Gate valves can only be fully opened or fully closed; they cannot be used for regulation or throttling. The gate has two sealing surfaces. The most common type of gate valve has two sealing surfaces that form a wedge shape, and such valve is referred to as wedge-angled gate valves.

The gate of a wedge gate valve can be made as a single, integral piece, known as a rigid gate. Alternatively, it can be made as a gate capable of undergoing slight deformation to improve its manufacturability and compensate for any deviations in the sealing surface angle that may occur during the machining process. This type of gate is called a resilient gate.