Flow and service, together.

Research record

The detail behind
the study.

Source-linked work for this revision. Reported checks describe the stated model or test; physical qualification and applicability to the current retrofit remain separate.

Subfield screen-transfer concept: a vented bridge, receiver, partition interface and opening service guide. Original Subfield identity on actual CAD.

93 raw parts and 154 passing CAD tests. These are preliminary designs; operating performance and manufacturing release remain in development.

Connected transfer candidate

Captured screen / bridge removed

Vented hood and flow bridge

Receiver / actual open section

Opening cap guide / indexed at grade

Service bay / actual tank positions

CONCEPT development package: 93 raw part STEP files, three separate-solid assembly states, eight assembly scenes, three actual CAD detail sections, six Subfield studio renders, GLB/Blender files, a six-page PDF and the 2485-body complete shallow-tank fit candidate. The service-bay render retains actual module positions and hides the tank structure for inspection.

The removable bridge has a low hood, 32 mm conduit, headspace vent, probe and tubular handle. A fixed spring-return receiver discharges northward through the separate P1 sleeve. Its bolted lower cap and removable guide cage provide an assembly path for the internal valve parts. A new backbone connects the housing, receiver, open-front guide and four partition anchors. The opening upper cap guide has a captive indexing pin and a grooved hinge pin. These shapes define preliminary interfaces; they are not released fabrication drawings, selected supplier products or proof of structural/sealing performance.

Nominal receiver closure is 6 mm. First receiver and hood seal exposure occurs at 8.4 and 10.4 mm, giving 2.4 and 4.4 mm geometric margins. Bridge lift is 1172 mm; captured-screen lift remains 1467 mm. Opening the cap guide and removing the bridge are separate from capping/capturing the screen. Geometry does not establish a safe physical procedure, bridge hold-down, cap-keeper detent, no-entry replacement, wet lifting or controlled drainage.

Verification: 154 complete CAD tests; 104 geometry/export checks; 15 tank-fit checks; STEP reimport and individual-body transport; full external extraction boxes with 30 mm allowance; existing media, receiver and cartridge allowances; actual CAD render/section review. Motion tests sample intermediate poses and are not a continuous multibody simulation. The expensive insert uses a filled conservative envelope for clearance development only; full exports and renders retain all 2,352 holes.

Flow ratings, restriction and storage response, spring/seat behavior, material/laminate selection, joints, welds, tolerances, free seals, anchor loads, service flushing, foul-water handling and deep-cover operation remain in development. See the review PDF for the finite-storage upper-bound example; it is not an allowable service time.