Overview of electric eccentric hemisphere valve :
Double eccentric hemisphere valve is a device for the transportation of pulverized coal, controlled gas, particulate fluid and powder solid medium. It is a special valve for pulverized coal injection produced in metallurgy and ore dressing.
Electric eccentric hemisphere valve PQ94F / Y / H features:
1. Solve the problems of slurry, mixed liquid, dust and other media in industrial production during pipeline transportation, such as sedimentation, fouling, blockage, and the valve is not closed tightly.
2. The switch is light. When the ball is turned on, the ball is detached from the housing without any contact. The starting torque is small and the rotation is flexible. When closed, the squeezing action of the hemisphere and the valve seat can remove the dirt on the sealing surface, make the valve open and close smoothly, the safety factor is high, and the sealing performance is good.
3. The eccentric structure of the sealing surface enables the spherical surface to automatically compensate for wear, maintains the valve's seal, and has a long service life.
4. The T-type valve is a wear-resistant hard-seal ball valve. Its sealing sub-material is special, and the sealing surface must be specially wear-resistant. The treated surface reaches HRC65-72 degrees, so the wear resistance of the valve is particularly good.
5, the valve surface paint, there are two kinds of room temperature and high temperature. Imported paint with a temperature resistance of 600 ° C is used for high temperature. After spraying, the paint is not burned, charred and coked. Does not change color.
Main performance parameters and execution standards of electric eccentric hemisphere valve PQ94F / Y / H:
|Nominal pressure MPa||1.0||1.6||2.5||4.0|
|Valve strength test pressure MPa||1.5||2.4||3.8||6.0|
|Valve sealing test pressure MPa||1.1||1.8||2.8||4.5|
|Applicable temperature ℃||≤425 ℃ ≤325 ℃|
|Applicable medium||Pulverized coal, coal ash, dust, gas|
|Flange standard||JB / T82.1-94|
|Valve structure length standard||GB12221-89|
Main shape and connection size of electric eccentric hemisphere valve PQ940F / Y / H:
|Nominal pressure PN (MPa)||Nominal diameter DN||Size (mm)|
|L||D series 1 / series 2||D1||D2||D6||b||f||Z-φd|