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PartsTable / COMPONENT / 9000-2129 PIECE 8
9000-2129 PIECE 8 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The RING,STEM DISK,VALVE is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-214-9006, 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
9000-2129 PIECE 8
NSN: 4820-01-214-9006
FSC: 4820
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
general_characteristics_item_descriptionNICKEL COPPER ALLOY ASTM-B164 CL B,QQ-N-281;OD 2.250 IN.;O/A LENGTH 1.812 IN.;ONE END 1.710 IN. ID,COUNTERBORE TO 0.156 IN. TO THREADED PART 1.688-16N THDS;OTHER END UNTHD 1.275 TO 1.280 IN. DIA IN
NSN4820-01-214-9006
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 9000-2129 PIECE 8 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: NICKEL COPPER ALLOY ASTM-B164 CL B,QQ-N-281;OD 2.250 IN.;O/A LENGTH 1.812 IN.;ONE END 1.710 IN. ID,COUNTERBORE TO 0.156 IN. TO THREADED PART 1.688-16N THDS;OTHER END UNTHD 1.275 TO 1.280 IN. DIA IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONNICKEL COPPER ALLOY ASTM-B164 CL B,QQ-N-281;OD 2.250 IN.;O/A LENGTH 1.812 IN.;ONE END 1.710 IN. ID,COUNTERBORE TO 0.156 IN. TO THREADED PART 1.688-16N THDS;OTHER END UNTHD 1.275 TO 1.280 IN. DIA IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
2620-920X12ASSY11APC4Interchangeable
interchangeable cross-reference
interchangeable
845-2181282-3INInterchangeable
interchangeable cross-reference
interchangeable
845-2445066 ITEM 19Interchangeable
interchangeable cross-reference
interchangeable
30147 PIECE 10Interchangeable
interchangeable cross-reference
interchangeable
9000-2129Interchangeable
interchangeable cross-reference
interchangeable
9000-2129 PIECE 10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9000-2129 PIECE 8?
9000-2129 PIECE 8 is a RING,STEM DISK,VALVE.
What parts can replace 9000-2129 PIECE 8?
There are 13 known substitutes for 9000-2129 PIECE 8: 2620-920X12ASSY11APC4, 845-2181282-3IN, 845-2445066 ITEM 19 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9000-2129 PIECE 8?
9000-2129 PIECE 8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-214-9006. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026