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W0166L1 — STEM,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

W0166L1: STEM,VALVE.

The STEM,VALVE is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-045-5445, 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
W0166L1
NSN: 4820-00-045-5445
FSC: 4820 — Valves, Nonpowered
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
NSN4820-00-045-5445
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: W0166L1 · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
SUBSTITUTES & CROSS-REFERENCES 9
SS845-2180977PC8L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
F20-09778 PIECE 9Reference document
Same NSN cross-reference
Reference document — Secondary reference
13G0045-262Reference document
Same NSN cross-reference
Reference document — Secondary reference
13G0045-262L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
W0166Reference document
Same NSN cross-reference
Reference document — Secondary reference
2640-669X2PC8L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is W0166L1?
W0166L1 is a STEM,VALVE.
What parts can replace W0166L1?
There are 9 known substitutes for W0166L1: SS845-2180977PC8L1, F20-09778 PIECE 9, 13G0045-262 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for W0166L1?
W0166L1 is cataloged in the U.S. Government catalog under NSN 4820-00-045-5445. 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.