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

Second Check Module

Assembly

Lighter-sprung check cartridge (≥1 psid) that backs up the first check and isolates the zone from downstream backpressure. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Second Check Module parts and their functions

5 top-level parts · 5 parts in total · full bill of materials below
Second Check Module parts diagram: 1 check cartridge frame, 2 check disc, 3 seat ring, 4 coil spring, 5 o-ring set. 5 parts in 5 top-level items.
Second Check Module parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Check Cartridge Frame 1× Engineered-polymer cage that guides the disc stroke and snaps into the body as a one-piece replaceable cartridge.
2 Check Disc 1× Reversible elastomer-faced poppet that seals against the seat ring under spring load.
3 Seat Ring 1× Replaceable stainless or polymer ring providing the drip-tight sealing surface for the check disc.
4 Coil Spring 1× 1 psid spring
5 O-Ring Set 1× Set of elastomer rings seated in grooves to seal static or slow-moving joints against fluid and gas, sized to ISO 3601.

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 Second Check Module

5 top-level lines · 5 rows shown · 5 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Check Cartridge Frame backflow-preventer-check-frame 1× 1 · part
2 Check Disc backflow-preventer-check-disc 1× 1 · part
3 Seat Ring backflow-preventer-seat-ring 1× 1 · part
4 Coil Spring coil-spring 1× 1 · part
5 O-Ring Set oring-set 1× 1 · part

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

Where the second check module is used

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

Used in 1 assembly

Reduced-Pressure Backflow Preventer

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–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Flex (Singapore)
flex.com ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks
🇮🇳Dixon Technologies
dixoninfo.com ↗ 		Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
🇨🇳BYD Electronics
bydelectronic.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks