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NMP-1551 PIECE 18 — GUIDE,VALVE STEM

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NMP-1551 PIECE 18: GUIDE,VALVE STEM.

The GUIDE,VALVE STEM is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, bore_counterbore: INCLUDED, bore_countersink: INCLUDED, style_designator: PLAIN, SHOULDERED, counterbore_location: AA END AND BB END, countersink_location: AA END AND BB END. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-281-1126, 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
NMP-1551 PIECE 18
NSN: 4820-01-281-1126
FSC: 4820 — Valves, Nonpowered
CAGE: 75954 — KUNKLE INDUSTRIES INC LONERGAN VALVE DIV (USA)
SPECIFICATIONS
materialNICKEL ALLOY
bore_counterboreINCLUDED
bore_countersinkINCLUDED
style_designatorPLAIN, SHOULDERED
counterbore_locationAA END AND BB END
countersink_locationAA END AND BB END
NSN4820-01-281-1126
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NMP-1551 PIECE 18 · 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
•
STYLE DESIGNATOR: PLAIN, SHOULDERED
•
BORE COUNTERBORE: INCLUDED
•
COUNTERBORE LOCATION: AA END AND BB END
•
MATERIAL: NICKEL ALLOY
•
BORE COUNTERSINK: INCLUDED
•
COUNTERSINK LOCATION: AA END AND BB END
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORPLAIN, SHOULDERED
BORE COUNTERBOREINCLUDED
COUNTERBORE LOCATIONAA END AND BB END
MATERIALNICKEL ALLOY
BORE COUNTERSINKINCLUDED
COUNTERSINK LOCATIONAA END AND BB END
SUBSTITUTES & CROSS-REFERENCES 3
NMP-1551 PIECE 1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
NMP-1551Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
0085000049NReference document
Same NSN cross-reference
Reference document — Secondary reference
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 NMP-1551 PIECE 18?
NMP-1551 PIECE 18 is a GUIDE,VALVE STEM.
What parts can replace NMP-1551 PIECE 18?
There are 3 known substitutes for NMP-1551 PIECE 18: NMP-1551 PIECE 1, NMP-1551, 0085000049N. Substitute compatibility should be verified for your specific system.
What is the NSN for NMP-1551 PIECE 18?
NMP-1551 PIECE 18 is cataloged in the U.S. Government catalog under NSN 4820-01-281-1126. 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.