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Y00020218 — VALVE,STOP-CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

Y00020218: VALVE,STOP-CHECK.

The VALVE,STOP-CHECK is a the manufacturer industrial component. Key specifications include thread_class: A2B ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDS, thread_quantity_per_inch: 20 ALL ENDS, thread_series_designator: UNF ALL ENDS, part_name_assigned_by_controlling_agency: CHECK VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-663-2008, 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
Y00020218
NSN: 4820-01-663-2008
FSC: 4820 — Valves, Nonpowered
CAGE: FAFH7 — SOFRAME (FRA)
SPECIFICATIONS
thread_classA2B ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
thread_quantity_per_inch20 ALL ENDS
thread_series_designatorUNF ALL ENDS
part_name_assigned_by_controlling_agencyCHECK VALVE
NSN4820-01-663-2008
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: Y00020218 · 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: STRAIGHT THRU
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
THREAD CLASS: A2B ALL ENDS
•
THREAD QUANTITY PER INCH: 20 ALL ENDS
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTRAIGHT THRU
THREAD DIRECTIONRIGHT-HAND ALL ENDS
PART NAME ASSIGNED BY CONTROLLING AGENCYCHECK VALVE
THREAD CLASSA2B ALL ENDS
THREAD QUANTITY PER INCH20 ALL ENDS
THREAD SERIES DESIGNATORUNF ALL ENDS
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 2
A07091336Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
NOV-10-E-1/2-1/4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is Y00020218?
Y00020218 is a VALVE,STOP-CHECK.
What parts can replace Y00020218?
There are 2 known substitutes for Y00020218: A07091336, NOV-10-E-1/2-1/4. Substitute compatibility should be verified for your specific system.
What is the NSN for Y00020218?
Y00020218 is cataloged in the U.S. Government catalog under NSN 4820-01-663-2008. 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.