Electric gate valve, electric knife gate valve, slab gate valve, flat gate valve, electric control valve DN800, customizable.

Electric Gate Valve

Keywords: Electric gate valve, electric knife gate valve, plate valve, flat gate valve, electric control valve

Models: DN150, DN200, DN300, DN400, DN500, DN600, DN800 (customizable for non-standard sizes)

Introduction:

The electric gate valve is a type of plate valve. This electric control valve uses various types of internal materials, expanding its application range. The use of sulfur-resistant materials and special surface treatment processes enables the valve to be used in environments containing sulfur media.

Structural Features of the Electric Gate Valve:

① The valve adopts a pressure self-tightening seal or a valve body and bonnet gasket sealing structure, ensuring safe and reliable operation.

② The valve disc uses a double gate plate with a universal top structure in the middle, which automatically adjusts the fit between the disc and the seat sealing surface, ensuring the valve's sealing. This structure also facilitates maintenance, reduces costs, and offers good disc interchangeability.

③ The sealing surfaces of the disc and seat are plasma spray welded with cobalt-chromium-tungsten hard alloy, providing high hardness, wear resistance, anti-scratch properties, and a long service life.

④ The valve stem is made of nitrided steel with a nitrided surface, offering high hardness, anti-scratch properties, corrosion resistance, and a long service life.

⑤ The electric actuator is equipped with a torque control mechanism, on-site operation mechanism, and manual-electric switching mechanism. In addition to local operation, it supports remote operation, PLC control, and 4~20mA current input/output intelligent control.

⑥ Manual valves are opened by a manual mechanism or impact handwheel, reducing the operating force required.

⑦ The valve can be installed at any position in the pipeline. Carbon steel or alloy steel valves can be selected based on the medium and its temperature.

⑧ During initial installation and debugging, the valve must be manually opened to about half its position to avoid damage to the valve or electric actuator due to incorrect motor phase sequence.

Structural Introduction

Linear Electric Gate Valve: Simply put, it uses an electric actuator to control the valve, enabling opening and closing. It can be divided into two parts: the upper part is the electric actuator, and the lower part is the valve.

Operating Principle of the Electric Gate Valve: The electric valve is typically formed by connecting an electric actuator to the valve, which becomes an electric gate valve after installation and debugging. The electric gate valve uses electrical energy as power to activate the electric actuator, driving the valve to perform opening, closing, and regulating actions, thereby controlling or regulating the pipeline medium.

Applications of the Electric Gate Valve: Used for analog regulation of fluid, gas, and air system pipeline media flow, employing AI control. In large valve and air system controls, electric valves can also be used for two-position on/off control. Applications in petroleum and power industries can incorporate AI feedback signals, controlled by DO or AO, commonly seen in large pipelines and air valves.

Features

1. Compact structure, rational design, high valve rigidity, smooth flow path, and low flow resistance coefficient.

2. Sealing surfaces made of stainless steel and hard alloy ensure a long service life.

3. Flexible graphite packing plate provides reliable sealing and easy, flexible operation.

4. Drive methods include manual, electric, pneumatic, and gear transmission. Structural forms include elastic wedge single valve, rigid wedge single gate plate, and double gate plate types.

5. Widely used in petroleum, chemical, and thermal power plants for connecting or cutting off media in oil, water, and steam pipelines as an opening and closing device.

6. Gate valves require relatively low force for opening and closing.

7. Gate valves allow unrestricted media flow direction, without causing flow disturbance or pressure reduction.

Structural Classification

Gate valves generally consist of a valve stem, valve body, bonnet, gate plate, driving device, and other components (fasteners, stem nut, sealing packing).

Place the welding wire or welding rod on the pipeline socket inside the valve. Move the flame away when the welding rod or wire enters the joint. Move the flame back and forth as the alloy flows into the joint. At the appropriate temperature, the alloy will flow quickly and easily into the space between the pipeline shell and the valve sleeve. Once the joint is filled, the edge of the welding alloy will be visible.

When the solder is in a viscous state, use a brush to remove excess solder. After the solder cools, wrap a gasket around the valve port.