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639AS2989 — VALVE,PNEUMATIC TANK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

639AS2989: VALVE,PNEUMATIC TANK.

The VALVE,PNEUMATIC TANK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 482 BODY, supplementary_features: VALVE INSTALLED IN PRESSURE COOLANT TANK BLEED DOWN FIXTURE 1450-01-059-8834, material_document_and_classification: QQ-B-637, ALLOY 482, SOFT FED SPEC SINGLE MATERIAL RESPONSE BODY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-109-3537, 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
639AS2989
NSN: 4820-01-109-3537
FSC: 4820 — Valves, Nonpowered
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY 482 BODY
supplementary_featuresVALVE INSTALLED IN PRESSURE COOLANT TANK BLEED DOWN FIXTURE 1450-01-059-8834
end_connection_quantity1
material_document_and_classificationQQ-B-637, ALLOY 482, SOFT FED SPEC SINGLE MATERIAL RESPONSE BODY
NSN4820-01-109-3537
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 639AS2989 · 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
•
SUPPLEMENTARY FEATURES: VALVE INSTALLED IN PRESSURE COOLANT TANK BLEED DOWN FIXTURE 1450-01-059-8834
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-637, ALLOY 482, SOFT FED SPEC SINGLE MATERIAL RESPONSE BODY
•
END CONNECTION QUANTITY: 1
•
MATERIAL: COPPER ALLOY 482 BODY
TECHNICAL CHARACTERISTICS
SUPPLEMENTARY FEATURESVALVE INSTALLED IN PRESSURE COOLANT TANK BLEED DOWN FIXTURE 1450-01-059-8834
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-637, ALLOY 482, SOFT FED SPEC SINGLE MATERIAL RESPONSE BODY
END CONNECTION QUANTITY1
MATERIALCOPPER ALLOY 482 BODY
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: Insurance item — stocked against contingency demandDemilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 639AS2989?
639AS2989 is a VALVE,PNEUMATIC TANK.
What is the NSN for 639AS2989?
639AS2989 is cataloged in the U.S. Government catalog under NSN 4820-01-109-3537. 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.