Fill, Drain, and Vent Hardware

Assembly

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Quick-disconnect couplings and one-way isolation valves for propellant loading and in-flight propellant feed.

Direct parts	7
Total parts	8
Used in	1 assembly
Class	Assembly

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Quick-disconnect couplings and one-way isolation valves for propellant loading and in-flight propellant feed. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Fill, Drain, and Vent Hardware parts and their functions

7 top-level parts · 8 parts in total · full bill of materials below

Fill, Drain, and Vent Hardware parts diagram: 1 fill quick-disconnect coupling, 2 drain quick-disconnect coupling, 3 propellant tank vent line, 4 solenoid inlet isolation valve, 5 tank outlet check valve, 6 tank pressure relief valve, 7 connector. 8 parts in 7 top-level items. — Fill, Drain, and Vent Hardware 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	Fill Quick-Disconnect Coupling	1×	Large-diameter QD coupling (1 inch or larger) for fast propellant loading
2	Drain Quick-Disconnect Coupling	1×	Drain QD coupling, same or slightly smaller diameter
3	Propellant Tank Vent Line	1×	Flexible vent line routing to spacecraft vent manifold
4	Solenoid Inlet Isolation Valve	1×	Inlet isolation valve downstream of fill coupling (solenoid, cryogenic-rated)
5	Tank Outlet Check Valve	1×	Check valve on tank outlet preventing backflow into tank
6	Tank Pressure Relief Valve	1×	Over-pressure relief set 5% above nominal tank pressure (e.g., 45 psi for 42 psi nominal)
7	Connector	2×	Coupling connectors to flight harness

3D model

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Build & assembly graph

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Bill of materials for Fill, Drain, and Vent Hardware

7 top-level lines · 7 rows shown · 8 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Fill Quick-Disconnect Coupling	spt-fill-coupling	1×	1	·	part
2	Drain Quick-Disconnect Coupling	spt-drain-coupling	1×	1	·	part
3	Propellant Tank Vent Line	spt-vent-line	1×	1	·	part
4	Solenoid Inlet Isolation Valve	spt-isolation-valve-inlet	1×	1	·	part
5	Tank Outlet Check Valve	spt-check-valve-outlet	1×	1	·	part
6	Tank Pressure Relief Valve	spt-relief-valve	1×	1	·	part
7	Connector	connector	2×	2	·	part

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Where the fill, drain, and vent hardware 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