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MC12945 — RETAINER-VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

MC12945: RETAINER-VALVE.

The RETAINER-VALVE is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: ALUMINUM QQ-A-225 TYPE 2024 T4,0.689 IN. LG,0.359 IN OD IN.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-081-7990, 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
MC12945
NSN: 4820-01-081-7990
FSC: 4820 — Valves, Nonpowered
CAGE: 76050 — EATON AEROSPACE LLC DBA STERER ENGINEERING DIV M.C.AEROSPACE (USA)
SPECIFICATIONS
general_characteristics_item_descriptionALUMINUM QQ-A-225 TYPE 2024 T4,0.689 IN. LG,0.359 IN OD IN
NSN4820-01-081-7990
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MC12945 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: ALUMINUM QQ-A-225 TYPE 2024 T4,0.689 IN. LG,0.359 IN OD IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONALUMINUM QQ-A-225 TYPE 2024 T4,0.689 IN. LG,0.359 IN OD IN
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: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MC12945?
MC12945 is a RETAINER-VALVE.
What is the NSN for MC12945?
MC12945 is cataloged in the U.S. Government catalog under NSN 4820-01-081-7990. 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.