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3543-19-21 — VALVE ASSEMBLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

3543-19-21: VALVE ASSEMBLY.

The VALVE ASSEMBLY is a the manufacturer industrial component. Key specifications include body_material: ALUMINUM, connection_type: THREADED INTERNAL PIPE, nominal_thread_size: 0.250 INCHES IN, valve_operation_method: MANUAL, thread_series_designator: NPT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-232-5752, 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
3543-19-21
NSN: 4820-00-232-5752
FSC: 4820 — Valves, Nonpowered
CAGE: 13859 — KING NUTRONICS CORPORATION DBA KING NUTRONICS (USA)
SPECIFICATIONS
body_materialALUMINUM
connection_typeTHREADED INTERNAL PIPE
nominal_thread_size0.250 INCHES IN
valve_operation_methodMANUAL
end_connection_quantity3
thread_series_designatorNPT
NSN4820-00-232-5752
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3543-19-21 · 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
•
CONNECTION TYPE: THREADED INTERNAL PIPE
•
END CONNECTION QUANTITY: 3
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
BODY MATERIAL: ALUMINUM
•
THREAD SERIES DESIGNATOR: NPT
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS
CONNECTION TYPETHREADED INTERNAL PIPE
END CONNECTION QUANTITY3
NOMINAL THREAD SIZE0.250 INCHES IN
BODY MATERIALALUMINUM
THREAD SERIES DESIGNATORNPT
VALVE OPERATION METHODMANUAL
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3543-19-21?
3543-19-21 is a VALVE ASSEMBLY.
What is the NSN for 3543-19-21?
3543-19-21 is cataloged in the U.S. Government catalog under NSN 4820-00-232-5752. 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.