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Features of Electric Knife Gate Valves and How to Repair Them

What are the applications of knife gate valves? The introduction of knife gate valves has addressed the issues of heavy weight, high flow resistance, large footprint, and difficult installation associated with conventional gate valves. Knife gate valves can serve as a replacement for general globe valves and operate under working pressures ranging from 1.0 MPa to 2.5 MPa and temperatures from -29°C to 550°C. The gate plate of a knife gate valve features a shearing action that can scrape off adhesive deposits on the sealing surface, automatically removing impurities. The stainless steel gate plate effectively prevents sealing leaks caused by corrosion.

28

2022

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02

What are the structure, features, and prospects of pneumatic knife gate valves?

The knife gate valve is a common type of gate valve that exerts a specific force. It boasts advantages such as a small footprint, low pressure requirements, resistance to the formation of debris and dust that could be pushed along, and low cost. It is widely used in national industries including mining, steel processing, coal handling, and slurry filtration. It serves as a cleaning device for slurries, wastewater, sludge, and water containing suspended solids; it is employed to clarify pulp and feedwater in the paper-making industry, and is also utilized in ash removal systems at power plants.

16

2022

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02

What is the structure of a slurry valve?

Based on the absorption and digestion of advanced valve technologies both domestically and internationally, the slurry valve has further upgraded its valve body structure, sealing configuration, actuator, and electrical control system. The slurry valve features a simple structure, compact size, light weight, low flow resistance, and prevents media from easily depositing inside the valve body.

09

2022

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02

Manufacturing standards for slurry valves require...

The manufacturing standards for slurry valves are as follows: 1. With the exception of the valve disc and packing gland, which are made of 316L stainless steel, the remaining valve body, valve stem, handwheel, and support rods shall be made of cast steel or wear-resistant cast iron.

27

2022

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01

The operating principle of pneumatic butterfly valves with ventilation features.

Pneumatic ventilation butterfly valves are used in ventilation and environmental protection systems across industries such as chemical engineering, building materials, power plants, and glass manufacturing, serving as flow-control or shut-off devices for pipelines carrying dusty, cold or hot air gases.

30

2021

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08

Structural Features and Principles of Electrically Actuated Butterfly Valves for Ventilation

The electric pneumatic ventilation butterfly valve is used in ventilation and environmental protection systems across industries such as chemical engineering, building materials, power plants, and glass manufacturing. It serves as a pipeline control device for regulating flow or shutting off dusty cold or hot air gases in pipelines. In general, this ventilation valve should be installed horizontally in the pipeline.

30

2021

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08

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