Propellant Management Device (Positive Expulsion)

Assembly

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Flexible diaphragm or bellows separating liquid propellant from pressurant gas, ensuring complete propellant drain in zero-gravity.

Direct parts	5
Total parts	5
Used in	1 assembly
Class	Assembly

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Flexible diaphragm or bellows separating liquid propellant from pressurant gas, ensuring complete propellant drain in zero-gravity. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Propellant Management Device (Positive Expulsion) parts and their functions

5 top-level parts · 5 parts in total · full bill of materials below

Propellant Management Device (Positive Expulsion) parts diagram: 1 teflon elastomer bladder, 2 bladder support cage, 3 tank outlet dip tube adapter, 4 PMD pressurant isolation valve, 5 fastener set. 5 parts in 5 top-level items. — Propellant Management Device (Positive Expulsion) parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Teflon Elastomer Bladder	1×	Teflon (PTFE) or butyl elastomer bladder, compatible with propellant
2	Bladder Support Cage	1×	Titanium wire cage supporting bladder against tank walls
3	Tank Outlet Dip Tube Adapter	1×	Stainless steel nozzle routing outlet below bladder to ensure liquid withdrawal
4	PMD Pressurant Isolation Valve	1×	Isolation valve on pressurant inlet preventing backflow into spacecraft
5	Fastener Set	1×	Support cage fasteners rated for propellant exposure

3D model

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Build & assembly graph

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Bill of materials for Propellant Management Device (Positive Expulsion)

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	Teflon Elastomer Bladder	spt-bladder-material	1×	1	·	part
2	Bladder Support Cage	spt-bladder-support-cage	1×	1	·	part
3	Tank Outlet Dip Tube Adapter	spt-outlet-adapter	1×	1	·	part
4	PMD Pressurant Isolation Valve	spt-pmd-isolation-valve	1×	1	·	part
5	Fastener Set	fastener-set	1×	1	·	part

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Where the propellant management device (positive expulsion) is used

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

Space Systems 1 Satellite Propellant Tank

Used in 1 assembly

Satellite Propellant Tank

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

Vendor	HQ	Specialty	MOQ	Lead 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