

The Pneumatic Square Knife Gate Valve is a linear-stroke on-off shut-off valve designed for harsh working conditions. It is mainly used in recovery systems, such as waste or sand separators in pulpers, high-consistency cleaners, or silo outlets for discharging solid particles.
The valve adopts a two-piece body structure, with a round inlet and a larger square outlet, ensuring that the medium does not accumulate inside the valve cavity, making it especially suitable for slag discharge applications.

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 Valve Body  | 
 a) Two-piece valve body, with a round inlet and a square outlet, completely preventing medium accumulation and avoiding valve jamming.  | 
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 b) The bottom of the flow channel uses fixed guiding claws to secure the gate plate, replacing the traditional groove design. This prevents medium buildup that could otherwise cause blockage when closing the valve.  | 
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 Gate Plate  | 
 a) The thickness of the gate plate can be increased according to working conditions to withstand higher pressure.  | 
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 b) Both surfaces of the gate plate are finely polished to enhance the sealing performance of the valve and to prevent medium adhesion.  | 
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 c) The gate plate surface is hard-chrome plated to improve wear resistance.  | 
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 Valve Seat  | 
 a) The valve adopts a replaceable seat design (non-integrated sealing). When the sealing surface is worn, only the seat needs to be replaced, which simplifies maintenance, extends the valve’s service life, and reduces overall equipment costs for customers.  | 
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 b) The valve seat gland isolates the seat from direct contact with the medium, preventing erosion and extending durability.  | 
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 c) The replaceable seat is fixed and pre-tightened by a valve seat cover. If the sealing performance declines, tightening the seat cover screws can improve the sealing effect.  | 
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 Others  | 
 A dual-bearing design reduces valve torque, making it easier to open and close  | 
We can design and develop according to the needs of our customers to meet the requirements of different clients.
| 
 Valve Body  | 
 a) Two-piece valve body, with a round inlet and a square outlet, completely preventing medium accumulation and avoiding valve jamming.  | 
| 
 b) The bottom of the flow channel uses fixed guiding claws to secure the gate plate, replacing the traditional groove design. This prevents medium buildup that could otherwise cause blockage when closing the valve.  | 
|
| 
 Gate Plate  | 
 a) The thickness of the gate plate can be increased according to working conditions to withstand higher pressure.  | 
| 
 b) Both surfaces of the gate plate are finely polished to enhance the sealing performance of the valve and to prevent medium adhesion.  | 
|
| 
 c) The gate plate surface is hard-chrome plated to improve wear resistance.  | 
|
| 
 Valve Seat  | 
 a) The valve adopts a replaceable seat design (non-integrated sealing). When the sealing surface is worn, only the seat needs to be replaced, which simplifies maintenance, extends the valve’s service life, and reduces overall equipment costs for customers.  | 
| 
 b) The valve seat gland isolates the seat from direct contact with the medium, preventing erosion and extending durability.  | 
|
| 
 c) The replaceable seat is fixed and pre-tightened by a valve seat cover. If the sealing performance declines, tightening the seat cover screws can improve the sealing effect.  | 
|
| 
 Others  | 
 A dual-bearing design reduces valve torque, making it easier to open and close  | 
Vatten Valve Group, a globally renowned industrial automation valve enterprise originating from Saarland, Germany, specializes in the research, development, and manufacturing of core products such as automatic control ball valves, butterfly valves, and regulating valves. Leveraging our exceptional technological expertise, we deliver innovative valve solutions and professional technical support to critical industries including energy, chemical, water treatment, pharmaceutical, and food processing.
The Group operates four state-of-the-art manufacturing bases strategically located in Shanghai, Tianjin, Lishui, and Jiaxing, China. To better serve international markets, we have established branch offices in key strategic locations including the United Kingdom, Turkey, Belarus, Saudi Arabia, and Indonesia. The establishment of our Indonesian office significantly enhances our service capabilities in the Southeast Asian market, ensuring timely and efficient technical support and services for local partners and clients.
Rooted in the German tradition of precision manufacturing, Vatten Valve maintains its focus on automatic control valves while strictly adhering to international quality standards. We are committed to continuous innovation, providing customers with superior performance products, professional technical support, and comprehensive fluid control solutions, empowering them to address complex industrial fluid control challenges.