FAQ 1 페이지

These cases apply when handling fluids such as highly concentrated acids, oxidizing chemicals, or solvents—for which general-purpose materials (NBR, EPDM) fail to meet chemical resistance standards, or when operating under high-temperature conditions that exceed the limits of such materials.

Under other conditions, general-purpose materials are the more economical choice.

No, that is not the case.

FKM is unsuitable for certain polar fluids such as high-concentration acetic acid and ketones and also exhibits poor low-temperature flexibility.

Material selection should be based on the fluid in contact and operating conditions, rather than price.

The materials used in the visor that meet the standards for food-contact environments (FDA 21 CFR 177.2600) are NBR and EPDM.

Please contact us regarding the use of other materials in food processing applications, as this requires a separate review.

Since the application involves hot water systems, EPDM which offers excellent hot water resistance is used as the standard material.

Formulation specifications may vary depending on operating temperatures and additional conditions.

It is not recommended.

EPDM is susceptible to mineral oils and lubricants, which can lead to swelling and degradation.

For oil systems, NBR which offers excellent oil resistance is the standard choice.

It is not a matter of superiority or inferiority, but of intended use.

NBR excels in oil-based systems, while EPDM is superior for water-based and steam systems.

Selection should be based on the fluid in contact and the operating temperature.

The visor's NBR/EPDM gaskets meet FDA 21 CFR 177.2600 standards and are suitable for use in food-contact environments.

It varies significantly depending on operating temperatures, the fluids involved, and operational patterns.

Even with the same material, service life can be drastically reduced under harsh conditions; therefore, we recommend condition-based replacement following regular inspections rather than adhering to a fixed service life.

To determine the precise replacement interval, it is best to consult the manufacturer after reviewing the specific operating conditions.

Typical signs include external leakage (liquid seepage), reduced heat exchange efficiency, and changes in pressure loss.

In food and pharmaceutical processing, these issues are sometimes detected during quality inspections; therefore, upon noticing such signs, it is essential to immediately check operating conditions and the condition of the gaskets.

No, that is not the case. Even if the dimensions are identical, heat and chemical resistance vary significantly depending on the material group (e.g., NBR, EPDM) and the specific compound formulation.

Using a material that is unsuitable for the fluid in contact and the operating temperature conditions can lead to premature deterioration and contamination issues.

You must verify whether it meets the requirements for food contact suitability.

The visor's NBR/EPDM gaskets comply with FDA 21 CFR 177.2600 standards.

Plate heat exchangers feature a structure of stacked, thin heat-transfer plates, offering high heat transfer efficiency, a compact footprint, and easy capacity expansion.

Shell-and-tube heat exchangers are advantageous for ultra-high-pressure and ultra-high-temperature conditions. However, for general heating, cooling, and refrigeration applications, plate heat exchangers often offer advantages in terms of efficiency and maintenance.

This is because the facility cooling water system and the IT equipment cooling water system must be physically separated while allowing only heat transfer to occur.

Using a high-efficiency plate heat exchanger with a low LMTD extends the operating time for free cooling, thereby reducing cooling power consumption.

Gaskets are critical components that seal the space between heat transfer plates, preventing the two fluids from mixing.

Using materials unsuited to the fluid properties or operating temperatures can lead to leakage or contamination. (This will be covered in detail in the next installment.)