IFAN Fast Delivery PEX-EVOH Pipes

Maximum temperature is 95°C

PEX-EVOH pipes have a maximum operating temperature of 95°C (203°F). This is the standard for PEX pipes. Short-term exposure to 100°C is also acceptable. Example: hot water systems operate well within this limit.

Continuous temperature rating

The continuous operating temperature is 95°C . This is for permanent, steady-state operation. Higher temperatures reduce the pipe’s lifespan. PEX-EVOH pipe is rated for long-term use at 95°C.

Short-term temperature spikes

Pipes can handle 100°C for short periods . This covers system upsets and testing. The duration must be limited. PEX-EVOH pipe can tolerate brief overheating.

Temperature derating curve

Higher temperatures require pressure derating . At 95°C, the pressure rating drops . At 20°C, the rating is higher . PEX-EVOH pipe follows standard derating rules.

Effect of temperature on EVOH

The EVOH barrier performs well up to 95°C . Above this temperature, the barrier may weaken. The oxygen protection is reduced. PEX-EVOH pipe must not exceed 95°C.

Effect of temperature on PEX

PEX softens at temperatures above 95°C . The pipe can deform under pressure . This can lead to failure . PEX-EVOH pipe relies on the PEX layers for strength.

Pressure rating at high temperature

At 95°C, the pressure rating is reduced . Typical rating is 7 bar (100 psi) . This is for continuous use . PEX-EVOH pipe must be derated for high temperatures.

Example: residential hot water

A home uses hot water at 60°C and 4 bar . PEX-EVOH pipe easily handles these conditions . The pipe operates well within its limits . Example: a reliable, long-lasting system.

Example: solar thermal system

A solar thermal system reaches 95°C . PEX-EVOH pipe is suitable for this application . The pipe must be derated for pressure . Example: a safe, effective solar heating system.

Example: underfloor heating

Underfloor heating operates at 40-60°C . PEX-EVOH pipe is perfect for this temperature . The pipe stays well within its limits . Example: a comfortable, efficient heating system.

Temperature and lifespan

Higher temperatures reduce the pipe’s lifespan . At 95°C, the lifespan is 25-30 years . At 70°C, the lifespan is 50+ years . PEX-EVOH pipe lasts longer at lower temperatures.

Final high-temperature summary

PEX-EVOH pipe performs well at temperatures up to 95°C (203°F). Short-term exposure to 100°C is acceptable. Higher temperatures require pressure derating. The EVOH layer remains effective up to 95°C. PEX softens above 95°C. The pipe lasts longer at lower temperatures. Always consult manufacturer specifications for exact limits. PEX-EVOH pipe is suitable for most hot water and heating applications. Example: a versatile pipe for temperatures up to 95°C.

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