Flow control gate valves in different sizes for sale
Our flow control valve uses military-grade sealing technology.
It features a modular design for quick maintenance.
In extreme temperatures ranging from -30°C to 80°C, it can also work well.
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Gradually adjust the cement raw material powder and apply at the outlet of the homogenization tank.
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Flange connection form, suitable for scenarios such as bottom discharge of the silo and air slide chute transportation.
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Control the discharge flow of raw materials/sintered materials, with a capacity of up to 50-100 tons per hour.
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With a rigid sealing structure and it offers outstanding cost-effectiveness in small and medium-sized cement plants.
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B630 Flow control gate valveThe modular design enables quick replacement of the actuators and is compatible with both pneumatic and electric modes.
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B800 Flow control gate valveCapacity 200 tons per hour, meeting the continuous operation requirements such as ship loading at the port.
Flow control gate valves feature
The flow control gate valve is usually used for blending raw materials, cooling clinker, and packaging finished products. This helps customers cut energy use by more than 15% and extends the lifespan of the equipment by three times. Our flow control gate valve is a key part of boosting quality and efficiency in modern cement production lines.
Our flow control gate valve uses high-precision pilot control technology. It adjusts the opening through a U-shaped groove or guide valve structure, keeping the material flow error within ±5%. This ensures the stability of material delivery.
By adopting a scientifically designed U-shaped groove structure, the fluid pressure is evenly distributed.This reduces local stress concentration.It also prevents deformation or rupture under high pressure.
The valve core is made of 16Mn steel plated with chromium (10 nanometers) or high-performance wear-resistant material. The core is combined with wool felt or maze-type seals. It can withstand the erosion of cement particles.
We can offer a compact structural design. It supports horizontal or multi-angle installation and is suitable for complex working conditions such as bottom discharge of storage bins and matching with inclined channels.
Flow regulation range: 0 - 700 t/h
The flow rate can be linearly adjusted from 0 to 700 t/h, with an error of ≤ ±2%. It’s like equipping the cement production line with a “smart flow steering wheel.” Its precise dynamic balance capability, sturdy and durable structural design, and intelligent control system together establish the industry benchmark performance for flow control gate valves.
Sequential use
Through collaborative adjustment of multiple valves, the flow error can be reduced from ±3% for a single valve to ±1.5%. This is especially suitable for processes that require strict flow stability, such as cement homogenization silos.
Excellent sealing performance
- The flow control gate valve features a separate sealing chamber and main valve chamber, ensuring absolute sealing of the control interior even during outdoor operations.
- An adjustable radial clearance gasket is placed between the flow control gate core and the housing, ensuring flexibility while preventing medium leakage.
- The high-density felt soft sealing box supports external adjustment of tightness, achieving adaptive compensation for a perfect fit and maintaining zero leakage over the long term.
- The wool felt side-draw structure allows for quick replacement of sealing components without disassembling the valve body, improving maintenance efficiency by over 50%.
- The sealing surface of the valve core is made of ethylene propylene diene monomer (EPDM) or metal hard sealing, which is temperature resistant up to 400°C, making the flow control gate suitable for high-temperature corrosive environments.
U-shaped core
- The U-shape design creates a nearly linear relationship between flow rate and flow control gate valve core opening. This enables precise control by actuators, such as 4-20 mA driven devices, with an accuracy of ±1.5%.
- The arc transition structure reduces the impact of cement particles on the valve core.It decreases localized vortex wear by over 30% compared to rectangular grooves.This extension of the core’s lifespan goes beyond 30,000 cycles.
- The U-shape prevents stress concentration at right angles, allowing the valve core to remain structurally sound under 1.6 MPa.
- The inclined angle at the bottom of the U-shape (15°-20°) and the compressed air purge interface effectively prevent cement buildup and jamming, increasing maintenance intervals by 50%.
Flow Control Gate Valve with Different Driving Methods
The electric actuator of the flow control gate valve can take a 4-20 mA signal. It turns the valve core 71° to adjust the flow area. This gives you a control accuracy of about ±1.5%.
If the power goes out, you can switch to manual operation.
The actuator has limit switches and torque protection built in. You can control it remotely using DCS systems. It also provides real-time updates on the valve position. Plus, it works well with PLC programming adjustments.
Using 0.4-0.7 MPa compressed air as the power source, the pneumatic flow control gate valve is equipped with a rotary cylinder (such as the UK KINETROL) and a 3P positioner. The opening and closing, as well as flow regulation, are controlled via a 4-20 mA signal. In the event of a loss of air supply, a spring return function can be selected to achieve a fail-safe mode (fail-close/open).
The manual flow control gate valve is suitable for simple pipelines where frequent adjustments are not required. By rotating the handle, it drives the valve stem, allowing the valve core to rotate from 0 to 90°. This changes the flow area to control the flow rate. It is equipped with a dial and a locking mechanism to secure the preset opening, preventing flow deviation caused by vibrations.
Related Product
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Complete the emergency cut-off within 0.5 seconds and high-frequency operation capability
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The groove-free design prevents blockages and is ideal for materials like ash and cement.
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The diversion/concatenation is achieved through the oscillation or rotation of the valve plate.
FAQ Section
Do you sometimes have issues with unstable flow when you’re trying to discharge raw materials from your production line? It can lead to poor mixing, right? Well, we have this smart flow control gate valve designed just for the cement industry. It’s already been used by over 50 big cement companies in China, and it’s helped them cut energy costs by more than 15%!
Our flow control gate valvecan be applied to the control of powder materials such as desulfurization ash and grains. However, it is necessary to pay attention to matching the material properties with the valve core material (for example, porcelain-coated valve cores are required for granular materials).
Darko’s flow control gate valves with the same sealing performance are priced 40% – 60% lower. At the same time, we can provide a rapid maintenance response.
The electric actuator is controlled by a 4-20mA signal input, in conjunction with the 3P positioner from Kennett of the UK. The response time is less than 1 second.
In cement plant: Carbon steel valve body + high chromium cast iron gasket + 304 valve stem combination, with relatively good cost performance
In corrosive environment: Need to use 316L stainless steel valve body + 2205 duplex steel valve core