BOMwiki the bill-of-materials encyclopedia
30,454,201 parts mapped · 193,225 items
Discussion History

Buoyancy Structure

Assembly

Two independent stacked buoyancy tubes, an inflatable floor, and a canopy arch, each a separate gas chamber so one puncture cannot sink the raft. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Buoyancy Structure parts and their functions

6 top-level parts · 12 parts in total · full bill of materials below
Buoyancy Structure parts diagram: 1 upper buoyancy tube, 2 lower buoyancy tube, 3 inflatable floor, 4 canopy arch tube, 5 pressure relief valve, 6 topping-up valve. 12 parts in 6 top-level items.
Buoyancy Structure parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Upper Buoyancy Tube 1× Welded polyurethane-coated nylon tube forming the top ring of the raft, an independent chamber sized to float the full complement alone.
2 Lower Buoyancy Tube 1× Bottom buoyancy ring bonded to the floor; with the upper tube it gives roughly 96 cm of combined freeboard structure.
3 Inflatable Floor 1× Double-skin floor inflated by bellows pump to insulate occupants from cold water conduction.
4 Canopy Arch Tube 1× Self-erecting canopy support
5 Pressure Relief Valve 4× One per chamber
6 Topping-Up Valve 4× One-way valve accepting the bellows pump to restore tube pressure as gas cools or seeps.

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly shared across products atomic part related product

Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.

Bill of materials for Buoyancy Structure

6 top-level lines · 6 rows shown · 12 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Upper Buoyancy Tube liferaft-upper-tube 1× 1 · part
2 Lower Buoyancy Tube liferaft-lower-tube 1× 1 · part
3 Inflatable Floor liferaft-inflatable-floor 1× 1 · part
4 Canopy Arch Tube liferaft-arch-tube 1× 1 · part
5 Pressure Relief Valve liferaft-relief-valve 4× 4 · part
6 Topping-Up Valve liferaft-topping-valve 4× 4 · part

Something wrong in this list? Report a problem with this BOM.

Where the buoyancy structure is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Inflatable Liferaft

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$200. How estimates work
VendorHQSpecialtyMOQLead time
🇮🇳Bharat Forge
bharatforge.com ↗ 		Pune, IN Forgings & metal parts 500 pcs 6–10 wks
🇨🇳CITIC Dicastal
dicastal.com ↗ 		Qinhuangdao, CN Aluminium castings & wheels 500 pcs 6–10 wks
🇮🇳Tata AutoComp
tataautocomp.com ↗ 		Pune, IN Auto components 500 pcs 6–10 wks
🇸🇬Beyonics
beyonics.com ↗ 		Singapore Precision metal & mfg 500 pcs 6–10 wks
🇮🇳Sundaram Clayton
sundaram-clayton.com ↗ 		Chennai, IN Die castings 500 pcs 6–10 wks