Technically yes, but practically and warranty-wise, it is strongly discouraged.
Refnet joint with XPE insulation for Daikin VRV by Scottfrio
Dimensional & Contour Discrepancies
Even if two Refnet joints serve the exact same pipe capacities and flow rates, their physical geometries rarely match 1:1 across brands.
Warranty and Code Compliance Risks
• VRF/VRV Warranty Invalidation: VRF manufacturers (Daikin, Mitsubishi, LG, Midea, Toshiba, etc.) are notoriously strict about installation materials. Using non-approved insulation components can lead a field auditor to void the warranty on the joint or the system if a leak or thermal failure occurs.
Best Practices & Alternatives
Intraoral scanners are safer to use given that they use lasers to scan your smile and
mouth without any radiation present. The Milling
Machine are typically also mild, so people do not experience
any aches.
| Scenario | What You Should Do |
| Missing or damaged original cover | Order the exact OEM replacement kit for that specific Refnet model. |
| Emergency field fix | Do not force a ill-fitting shell from another brand. Instead, hand-wrap the Refnet joint thoroughly using high-grade elastomeric closed-cell foam insulation tape/sheets (e.g., Armaflex or K-Flex), ensuring a tight, 100% vapor seal with no air pockets. |
| Fire-rated plenum spaces | Check local codes—many jurisdictions require discarding pre-formed foam shells altogether and replacing them with fire-rated, code-compliant fiberglass or calcium silicate wraps. |
Key Rule of Thumb: If you must use a cover from a different brand, it must sit entirely flush against the copper body with zero internal air pockets, and all seams must be sealed airtight with vapor-barrier tape. Otherwise, field-wrapping with closed-cell insulation sheet is much safer.