Insulation Elbow K-flex K-FLEX® PU with PVC Jacket 20 x 22

K-flex K-FLEX® PU elbow insulation with a PVC jacket is a pre-formed thermal and acoustic insulation fitting designed for pipe elbows. The product combines a closed-cell polyurethane (PU) insulation core with a protective PVC outer jacket to reduce heat loss, limit condensation and provide mechanical protection at elbow joints. Size 20 x 22 corresponds to the fitting dimensions for standard elbow connections used in HVAC, refrigeration and plumbing systems.

Advantages

The closed-cell PU core delivers low thermal conductivity and water vapor resistance, helping to maintain temperature control and prevent moisture ingress. The PVC jacket adds abrasion resistance, ease of cleaning and a uniform external finish that resists sunlight and routine mechanical wear. The pre-formed elbow ensures consistent fit and faster installation compared with field-formed insulation, reducing gaps and thermal bridges at the elbow.

Suitable for

• HVAC elbow insulation in commercial and residential systems
• Refrigeration piping where condensation control is required
• Plumbing installations to reduce heat loss on hot water elbows
• Retrofit and new-build projects requiring pre-formed elbow sections

Key specifications

• Material: closed-cell polyurethane (PU) insulation core with PVC outer jacket
• Application: elbow fitting for thermal and acoustic insulation
• Size designation: 20 x 22 (elbow fitting dimensions)
• Surface: smooth PVC jacket for mechanical protection and cleaning
• Performance: low thermal conductivity and water vapor resistance typical of PU foam

How to use

Select the correct elbow size to match the pipe diameter and elbow geometry. Clean and dry the pipe surface before applying the pre-formed K-FLEX PU elbow. Align the elbow over the pipe bend so the joint faces are closed evenly; where required, secure seams with suitable adhesive or approved sealing tape compatible with PU and PVC materials. Ensure continuous insulation coverage by connecting straight sections of insulation to the elbow and sealing joints to reduce thermal bridges and prevent condensation.

Usage recommendations

Store and handle the insulation in a dry environment to avoid surface contamination. For outdoor or UV-exposed installations, verify that the PVC jacket and any additional coatings meet local exposure requirements. Use compatible adhesives and tapes tested for PU and PVC materials, and follow local building codes and safety regulations when installing on refrigeration and HVAC systems.