UNION BW

Core structure
Component Function Description
Joint body: with internal threads or sealing surfaces, fixedly connected to equipment or pipeline ports
Nut: Tighten the sealing gasket to achieve locking between the joint body and the connecting pipe
Takeover: One end is welded to the main pipeline, and the other end is machined with threads or sealing grooves to match the joint body
Sealing components: O-ring (oil/high temperature resistant), PTFE gasket (corrosion-resistant), copper gasket (high-pressure sealing)

Classified by structure:
Type Characteristics Typical Applications
Direct terminal flexible joint: one end welded, one end threaded (ZG/NPT) pressure gauge connection, pneumatic instrument interface
Cross board adjacent flexible joint: with isolation plate structure, anti leakage diffusion oil tank partition, cabin wall pipeline through cabin
45 °/90 ° articulated elbow: Integrated articulated elbow saves installation space in ship engine compartments and compact equipment layout
Socket welding flexible joint: Small diameter (≤ DN50) socket welding, better sealing for food and pharmaceutical clean pipelines

Industry application scenarios:
Energy industry: Oil and gas pipeline instrument valve group (sulfur resistant 316L material, 32MPa high pressure)
Chemical system: Reaction kettle acid-base medium branch (PTFE gasket corrosion-resistant)
Shipbuilding: ballast water pipeline penetration (through plate design to prevent leakage)
Food and medicine: CIP cleaning of pipelines (316L mirror polished, Ra≤0.8μm）