Generator accuracy
This register distinguishes published dimensions from deliberately approximate presentation details. The repository audit is the detailed source of truth.
| Family | Dimensional state | Known limitation |
|---|---|---|
| BU | Published angle/DN/l combinations; connector datum at insertion stops | Under-nominal male spigots, shallow EPDM bands below the SR inner wall, persistent stop beads and hard stop-plane shading are assembly-coherent planning details. Ordinary Safe assembly inserts fully to the stop bead/fold; 10–15 mm is the fastener distance from the duct end, not an expansion gap. Clearance, sleeve projection and bead profile remain visual approximations because the BU sheet does not dimension them. |
| SR | Published DN and stock/cut length represented | Galvanized material plus crisp spiral-seam and axial-end shading are included; wall gauge and seam profile remain presentation approximations. |
| SRI / BFUI / BSLU / SLU / MFI | Published principal envelope or table values represented | Small seams, gauges and some connector-profile details remain presentation approximations. |
| NPU / RCLU / CBC | Catalog dimensions represented where registered | Profile-level audit or deeper drawing verification remains open. |
| TCPUSS / TVU45 | All 167 / 199 published d1/d3/l/l3/mass tuples represented. TVU45 A/B/C connectors use the published Safe stop planes; its constant-DN branch and main bodies are Exact-Boolean fused around one open inner air path. | TVU45 includes visible stop beads, projecting male nipples and EPDM lips. Pressed saddle shape, sheet gauge, free nipple projection and seal/bead profiles remain planning geometry where the sheet does not dimension them. |
| XVU / YVU | Published dimensional tables represented | Intersection/loft geometry remains a lightweight planning approximation. |
| BUSS / SRSS | Legacy compatibility families | Do not substitute these for ordinary Safe BU / SR without an explicit system requirement. |