Products Details

Electric flange gate valve is a kind of valve widely used in petrochemical industry, thermal power plant and other fields, mainly used to control or cut off the flow of media. Here are some details about the electric flange gate valve:

Definition and use:

Electric flange gate valve is a kind of gate valve driven by electric actuator, which is often used in petrochemical industry, thermal power plant and other occasions to control or cut off the flow of media.
Design specification:

The design specification of electric flange gate valve includes GB/T 12234 (design specification), GB/T 12221 (structural length), JB/T 79 (connection flange), JB/T 9092 (test and inspection), GB/T 9131 (pressure-temperature grade), GB/T 12220 (product mark).
Features:

The electric flange gate valve has small flow resistance, and the medium channel in the valve body is straight through, and the medium flow resistance is small.
Greater force is required when opening and closing, because the direction of motion of the ram is perpendicular to the direction of the medium flow.
The height of the structure is high, the opening and closing time is long, and the lift of the ram is driven by the thread.
It is not easy to produce water hammer phenomenon, because the closing time is longer.
The medium can flow in any direction on both sides, easy installation, and the valve body channel is symmetrical on both sides.
The length of the structure (the distance between the two ends of the shell) is small.
The sealing surface is easy to wear, which affects the service life. When opening and closing, the sealing surface of the gate and the seat will rub and slide, which is easy to wear and affect the sealing performance and service life.
The price is high, the sealing surface is in more contact, and the processing is complicated, especially the sealing surface of the valve seat is not easy to process, and there are many parts.
It has the advantages of simple structure, short structure length, good manufacturability and wide application range.
Compact structure, good valve rigidity, smooth channel, low flow resistance, stainless steel and cemented carbide sealing surface, long service life, PTFE packing, reliable sealing, light and flexible operation.
Performance specifications:

The performance specifications of electric flanged gate valves include nominal pressure, test pressure, operating temperature and applicable media. For example, the nominal pressure of the Z41H-16C and Z41W-16P (R) models is 1.6MPa, the strength hydraulic test pressure is 2.4MPa, the seal hydraulic test pressure is 1.8MPa, and the applicable medium is nitric acid.
Main component materials:

The main components of the electric flange gate valve include valve body/valve cover, gate plate, valve stem, packing, packing gland, bolt and nut, etc. Different series of materials vary, such as ZGICr18Ni9Ti series, ZG00Cr18Ni10 series, ZG1Cr18Ni12M02Ti series, ZG00Cr17Ni14M02 series and WCB series.
Main size and weight:

The main size and weight of electric flanged gate valves vary according to nominal pressure and nominal diameter. For example, an electric flanged gate valve with a nominal pressure of 1.6 MPa and a nominal diameter of 40 mm has a length of 240 mm, a diameter of 150 mm and a weight of 68 kg.