Overview The F46-lined discharge valve is primarily installed at the bottom of reaction kettles for discharging purposes. Structural Features Similar to the F46-lined ball valve, the main difference lies in the varying flange sizes at both ends. The larger end connects to the equipment, typically rated at 0.6 MPa, while the smaller end connects to the pipeline, usually rated at 1.6 MPa. Design Standards Complies with GB12237, API608, and API6D standards. Drive Methods Manual, worm gear drive, pneumatic, and electric.