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FC21031 — CHECK VALVE ASSEMBLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

FC21031: CHECK VALVE ASSEMBLY.

The CHECK VALVE ASSEMBLY is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: 1.214 IN. MIN,1.219 IN.

MAX DIA; 1.125 IN. ACROSS FLATS IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-085-7405, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
FC21031
NSN: 4820-01-085-7405
FSC: 4820 — Valves, Nonpowered
CAGE: 63477 — FEDERAL MOGUL CORP SUB WAGNER BRAKE MOOG AUTOMOTIVE DIV (USA)
SPECIFICATIONS
general_characteristics_item_description1.214 IN. MIN,1.219 IN. MAX DIA; 1.125 IN. ACROSS FLATS IN
NSN4820-01-085-7405
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: FC21031 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 1.214 IN. MIN,1.219 IN. MAX DIA; 1.125 IN. ACROSS FLATS IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTION1.214 IN. MIN,1.219 IN. MAX DIA; 1.125 IN. ACROSS FLATS IN
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
D78298Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FC21031?
FC21031 is a CHECK VALVE ASSEMBLY.
What parts can replace FC21031?
There is 1 known substitute for FC21031: D78298. Substitute compatibility should be verified for your specific system.
What is the NSN for FC21031?
FC21031 is cataloged in the U.S. Government catalog under NSN 4820-01-085-7405. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.