Swivel ball valve
The rotary ball valve primarily functions to seal effectively under both forward and reverse pressure conditions, including when reverse pressure exceeds forward pressure. When forward pressure is applied, the medium pressure pushes the valve plate forward, with the sealing surface of the valve plate tightly contacting the sealing surface of the valve seat to transfer pressure, pushing the valve seat against the step of the valve body for a good seal. When reverse pressure is applied, the medium pressure pushes the valve plate backward, simultaneously pushing the valve seat backward. The sealing surface of the valve seat closely contacts the sealing surface of the valve plate to transfer pressure, ensuring a good seal.
Structural Features
1. Utilizes an inclined elliptical butterfly blade radial dynamic balance sealing system, ensuring nearly balanced forces on both sides of the valve's inlet and outlet, resulting in a smaller torque required for valve operation and reliable sealing performance in both directions, capable of withstanding bidirectional pressure.
2. The valve sealing surface features a full-metal sealing ring, precision-machined for high accuracy. The sealing cross-section is elliptical, forming a sealing pair with the valve seat's metal sealing surface. During the opening and closing of the valve, the butterfly plate sealing surface makes instantaneous contact or separation at each point along the 360° circumference, enabling quick and precise opening or closing actions.
3. Utilizes a three-eccentric structure, which is an additional angular eccentricity added to the double eccentric butterfly valve.
Standard of Execution
Design Specifications: GB/T 12238, JB/T 8527
Flange Connections: GB/T 9113, JB/T 79, HG20592
Structure Length: GB/T12221
Testing and Inspection: GB/T 13927
Performance Parameters
Product Specifications: DN50~2230mm
Pressure Class: PN 1.0~2.5 MPa
Applicable Media: Air, water, steam, gas, oil products, and weakly corrosive media such as acids, alkalis, and salts.
Temperature Range: Carbon Steel: -29℃~425℃; Stainless Steel: -40℃~600℃
Drive Method: Worm Gear Drive, Pneumatic Drive, Electric Drive, Hydraulic Drive
Main Materials: Cast Steel, Stainless Steel, Chromium Molybdenum Steel, Alloy Steel, Duplex Steel
Product Dimensions
