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4921K16 — COCK,POPPET DRAIN

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

4921K16: COCK,POPPET DRAIN.

The COCK,POPPET DRAIN is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, connection_type: THREADED EXTERNAL PIPE ALL ENDS, style_designator: STRAIGHT THRU, valve_operation_method: MANUAL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-481-5414, 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
4921K16
NSN: 4820-01-481-5414
FSC: 4820 — Valves, Nonpowered
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
special_featuresFIXED HANDLES SCREW OUT BUT REMAIN ATTACHED TO HELP PREVENT LOSS. MAXIMUM PRESSURE RATING OF 200 PSI. PIPE SIZE 0.250 INCHES.CONNECTION IS NPT MALE. IN
style_designatorSTRAIGHT THRU
valve_operation_methodMANUAL
end_item_identificationCONTRACTOR LOGISTIC SUPPORT MODEL M871, 30-FOOT TRAILER, LAUNDRY ADVANCED SYSTEM (LADDS), NSN: 2330-00-122-6779 CONTRACT DAAK60-97-C-9222 TM 9-3510-122-24P.
NSN4820-01-481-5414
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4921K16 · 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 EXTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MATERIAL: COPPER ALLOY BODY
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
SPECIAL FEATURESFIXED HANDLES SCREW OUT BUT REMAIN ATTACHED TO HELP PREVENT LOSS. MAXIMUM PRESSURE RATING OF 200 PSI. PIPE SIZE 0.250 INCHES.CONNECTION IS NPT MALE. IN
END ITEM IDENTIFICATIONCONTRACTOR LOGISTIC SUPPORT MODEL M871, 30-FOOT TRAILER, LAUNDRY ADVANCED SYSTEM (LADDS), NSN: 2330-00-122-6779 CONTRACT DAAK60-97-C-9222 TM 9-3510-122-24P.
MATERIALCOPPER ALLOY BODY
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4921K16?
4921K16 is a COCK,POPPET DRAIN.
What is the NSN for 4921K16?
4921K16 is cataloged in the U.S. Government catalog under NSN 4820-01-481-5414. 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.