Differences Between Split Flanges and Transition Flanges

Table of Contents‌

Definition and Core Functions

Structural Differences

Application Scenarios

Installation and Maintenance Features

Pressure and Sealing Performance

Comparison Summary

   
1. Definition and Core Functions‌

Split Flange‌:
A two-piece flange design bolted together for easy disassembly, ideal for frequent maintenance (e.g., hydraulic systems, fire protection pipelines).

Transition Flange‌:
Connects pipes of different specifications/materials, corrects misalignment, and bridges hybrid systems (e.g., grooved-to-flanged transitions).

2. Structural Differences‌

Split Flange‌:
Split-ring design with separable halves; paired with grooved clamps and rubber gaskets.

Transition Flange‌:
360-degree rotatable design; combines grooved and flanged interfaces (e.g., one end grooved, the other flanged).

3. Application Scenarios‌

Split Flange‌:
Hydraulic machinery, fire protection pipelines (DN15-DN80), high-pressure systems (up to 6000 PSI).

Transition Flange‌:
Steel structures with installation misalignments, material transitions (e.g., stainless steel to carbon steel).

4. Installation and Maintenance Features‌

Split Flange‌:
Quick disassembly without pipeline disruption; requires periodic gasket replacement.

Transition Flange‌:
Tolerates angular deviations; needs rotational component inspections.

5. Pressure and Sealing Performance‌

Split Flange‌:
Medium-high pressure (up to PN 10.0 MPa); relies on clamp compression.

Transition Flange‌:
Low-medium pressure (PN ≤2.5 MPa); lower sealing due to interface transitions.

6.Comparison Summary