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6519099 — PISTON,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

6519099: PISTON,VALVE.

The PISTON,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, overall_length: 8.625 INCHES NOMINAL IN, outside_diameter: 2.247 INCHES NOMINAL IN, features_provided: STEPPED, end_item_identification: NAVY STANDARD RAM TENSIONER, MODEL 120, valve_design_control_activity: 53711. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-411-0678, 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
6519099
NSN: 4820-01-411-0678
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL
overall_length8.625 INCHES NOMINAL IN
outside_diameter2.247 INCHES NOMINAL IN
features_providedSTEPPED
end_item_identificationNAVY STANDARD RAM TENSIONER, MODEL 120
valve_design_control_activity53711
material_document_and_classificationASTM A576,GR 1035 ASSN STD SINGLE MATERIAL RESPONSE
NSN4820-01-411-0678
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6519099 · 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
•
OUTSIDE DIAMETER: 2.247 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A576,GR 1035 ASSN STD SINGLE MATERIAL RESPONSE
•
FEATURES PROVIDED: STEPPED
•
VALVE DESIGN CONTROL ACTIVITY: 53711
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER2.247 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A576,GR 1035 ASSN STD SINGLE MATERIAL RESPONSE
OVERALL LENGTH8.625 INCHES NOMINAL IN
FEATURES PROVIDEDSTEPPED
VALVE DESIGN CONTROL ACTIVITY53711
END ITEM IDENTIFICATIONNAVY STANDARD RAM TENSIONER, MODEL 120
MATERIALSTEEL
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 1
6519083 PIECE 10Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6519099?
6519099 is a PISTON,VALVE.
What parts can replace 6519099?
There is 1 known substitute for 6519099: 6519083 PIECE 10. Substitute compatibility should be verified for your specific system.
What is the NSN for 6519099?
6519099 is cataloged in the U.S. Government catalog under NSN 4820-01-411-0678. 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.