IFAN China Supply PEX-EVOH Pipes

Short answer: yes

PEX-EVOH pipes can be safely installed in concrete slabs. This is a common application for underfloor heating. The pipe is compatible with the alkaline environment of concrete. Example: millions of slabs contain PEX-EVOH pipes.

Concrete compatibility

PEX and EVOH are resistant to alkaline materials. Concrete has a high pH of 11-13. The pipe materials are unaffected by this environment. PEX-EVOH pipe is designed for embedment in concrete.

Alkaline resistance

The outer PEX layer resists alkaline attack. The EVOH layer is protected from direct contact. The adhesive layers remain intact. PEX-EVOH pipe withstands the chemical environment of concrete.

Thermal expansion management

Pipes in concrete must manage thermal expansion. The pipe’s expansion is limited by the concrete. The EVOH layer helps reduce expansion. PEX-EVOH pipe is stable in concrete embedment.

Pressure during pour

Concrete pours exert pressure on the pipe. The pipe must withstand this pressure without collapsing. PEX-EVOH pipe is rigid enough to handle the pour.

Protection during installation

Protect the pipe from sharp objects and aggregate. Keep the pipe pressurized during the pour. This prevents collapse and maintains shape. PEX-EVOH pipe needs proper installation protection.

Example: residential underfloor heating

A new home has concrete slab construction. PEX-EVOH pipe is laid in a serpentine pattern. The pipe is secured to the rebar with clips. Concrete is poured over the pipe.

Example: commercial building slab

A large commercial building has a concrete slab. PEX-EVOH pipe is embedded for heating and cooling. The pipe loops are carefully laid out. Concrete covers the pipe system.

Example: garage slab heating

A garage has a heated concrete slab. PEX-EVOH pipe is installed in the slab. The pipe provides radiant heat to the garage. Example: a warm, comfortable space.

Pressure testing before pouring

Test the pipe system before concrete is poured. Pressurize the pipes to 1.5x working pressure. Check all joints and fittings. PEX-EVOH pipe must be tested before embedment.

Repairs after pouring

Repairs are difficult after concrete is poured. Plan the layout carefully before installation. Use continuous pipe sections to minimize joints. PEX-EVOH pipe installation requires careful planning.

Final concrete embedment summary

PEX-EVOH pipe can be installed in concrete slabs safely. The pipe resists alkaline concrete environments. It withstands the pressure of concrete pours. Thermal expansion is managed by the EVOH layer. Protect the pipe during installation and test before pouring. Plan the layout carefully to avoid future repairs. PEX-EVOH pipe is a reliable choice for slab embedment. Example: a durable, long-lasting installation.

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