IFAN All Size Available PEX-EVOH Pipes

Yes, fittings are identical

PEX-EVOH pipes use the same fittings as standard PEX. The outer diameter is exactly the same. The EVOH layer does not change dimensions. Example: a crimp fitting works on both types equally.

Compression fittings work identically

Compression fittings seal on the pipe’s outer surface. The EVOH layer is between the outer layers. The compression ring grips the outer PEX layer. PEX-EVOH pipes are compatible with compression fittings.

Crimp fittings are fully compatible

Crimp fittings compress a ring onto the pipe. The EVOH layer does not affect crimping. The same crimp tool and rings work. PEX-EVOH pipes accept standard crimp connections.

Push-fit fittings also work

Push-fit fittings use teeth to grip the pipe. The EVOH layer does not interfere with this grip. The O-ring seals on the outer surface. PEX-EVOH pipes work with push-fit connectors.

Example: residential plumbing with PEX-EVOH

A house uses PEX-EVOH pipes for heating and plumbing. The plumber uses standard PEX crimp fittings. Cross-linked Polyethylene – Ethylene Vinyl Alcohol Copolymer pipes connect to fixtures with the same fittings.

Example: radiant floor manifold connections

A radiant floor uses PEX-EVOH pipe from the manifold. Standard compression fittings connect to the manifold. PEX-EVOH pipes fit perfectly into the manifold ports.

What matters: outer diameter

The EVOH barrier does not add to the outer diameter. The pipe’s outside dimension is the same. This is what matters for fittings. Cross-linked Polyethylene – Ethylene Vinyl Alcohol Copolymer pipes have identical OD to standard PEX.

Installation tools are the same

Crimp tools work on both pipe types. The same jaws and rings are used. No special tools are needed. Cross-linked Polyethylene – Ethylene Vinyl Alcohol Copolymer pipes are installed with standard PEX tools.

Oxygen barrier layer protection

The EVOH layer is protected inside the pipe wall. Crimping does not damage the barrier. The layer remains intact and functional. Cross-linked Polyethylene – Ethylene Vinyl Alcohol Copolymer pipes retain their oxygen barrier after installation.

Do not use fittings for PEX-AL-PEX

PEX-AL-PEX has a different outer diameter. Fittings for PEX-AL-PEX are not compatible. Cross-linked Polyethylene – Ethylene Vinyl Alcohol Copolymer pipes need standard PEX fittings only.

Example: repair with mixed pipe types

A heating system has both PEX and PEX-EVOH pipes. The same repair fittings work on both. PEX-EVOH pipes simplify system repairs.

Final compatibility summary

Cross-linked Polyethylene – Ethylene Vinyl Alcohol Copolymer pipes use the same fittings as standard PEX. Compression, crimp, and push-fit fittings all work. The outer diameter is identical to standard PEX. The EVOH layer does not affect fitting compatibility. The same installation tools are used. No special fittings are required. Always use standard PEX fittings, not PEX-AL-PEX types. Example: a seamless transition for any plumbing or heating system.

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