PartsTable
Technical Data Sheet
Download PDF

21051-801 — VALVE,FLOW CONTROL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21051-801: VALVE,FLOW CONTROL.

The VALVE,FLOW CONTROL is a the manufacturer industrial component. Key specifications include end_item_identification: MAINSTAGE VALVE ASSY, part_name_assigned_by_controlling_agency: INAVY NAME AND ITEM NAME TEXT ARE VALVE, FLOW CONTROL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-520-7396, 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
21051-801
NSN: 4820-01-520-7396
NIINs: 015207396, 015627422
FSC: 4820 — Valves, Nonpowered
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
end_item_identificationMAINSTAGE VALVE ASSY
part_name_assigned_by_controlling_agencyINAVY NAME AND ITEM NAME TEXT ARE VALVE, FLOW CONTROL
NSN4820-01-520-7396
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21051-801 · 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
SUBSTITUTES & CROSS-REFERENCES 2
21051Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
21051 FIND 5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 21051-801?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 21051-801?
21051-801 is a VALVE,FLOW CONTROL.
What parts can replace 21051-801?
There are 2 known substitutes for 21051-801: 21051, 21051 FIND 5. Substitute compatibility should be verified for your specific system.
What is the NSN for 21051-801?
21051-801 is cataloged in the U.S. Government catalog under NSN 4820-01-520-7396. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 21051-801

✓ 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.