What Do You Know About Split Flange Fittings?

A split flange for pipe connects two sections without removing the entire assembly.

It clamps around the pipe in two halves, using bolts and an O-ring to create a tight seal.

This design makes installation and repairs quick, especially in high-pressure hydraulic systems where downtime is costly.

Types of Split Flange Fittings

Different split flanges are made for different jobs. Some are designed for quick fixes, while others provide a clean finish

Split Repair Flange

This one clamps over damaged sections of a pipe. It seals off cracks or worn-out areas without needing to replace the entire pipe.

Split Flange Escutcheon Plate

Used in plumbing and HVAC systems, it covers the hole where a pipe passes through a surface. It helps block dust and moisture while making the installation look clean.

Components of a Split Flange Fitting

Every split flange fitting has key parts that work together to create a secure connection:

How Split Flange Fittings Work

A split flange grips the pipe with two separate halves that bolt together.

An O-ring sits in a groove on the flange face, sealing against leaks when tightened.

The bolts compress the O-ring against a flat surface, preventing fluid from escaping.

This setup eliminates the need for large wrenches or excessive force during assembly.

When to Use a Split Flange Fitting

Not every connection needs a split flange for pipe, but in certain cases, it’s the best option.

• Frequent maintenance areas – If a section of piping needs regular inspection or replacement, a split flange makes access easier.
• High-pressure systems – Hydraulic lines and industrial piping benefit from a secure seal that can handle intense pressure.
• Hard-to-reach installations – In tight spaces where large wrenches can’t be used, split flanges provide a practical solution.

Installation Considerations

Proper installation demands clean, smooth mating surfaces where even the smallest scratch can compromise the seal.

Workers must apply equal torque to all mounting bolts using a cross-pattern sequence, avoiding air tools that might cause over-tightening.

The flange shoulder should protrude exactly 0.010 to 0.030 inches beyond the clamp face for optimal sealing performance.

Pressure Ratings

Split flange adapters can convert Code 61 or Code 62 flange ports to JIC or O-Ring Face Seal connections, providing flexibility in system design and maintenance.

Conclusion

A split flange system provides a reliable solution for your high-pressure connections, combining simple maintenance with robust performance.

Quality split flanges, available in various pressure ratings and materials at longanflange.com, fit seamlessly into your hydraulic system design.

When you need secure, serviceable connections that last, split flange fittings deliver exactly what you’re looking for.

Reference

What Do You Know About Split Flange Fittings?