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NL-0994-1 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NL-0994-1: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, seat_angle: 44.4 DEGREES NOMINAL, inside_depth: 2.875 INCHES NOMINAL IN, overall_height: 4.531 INCHES NOMINAL IN, shank_diameter: 2.617 INCHES NOMINAL IN, flange_diameter: 2.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-571-5899, 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
NL-0994-1
NSN: 4820-00-571-5899
FSC: 4820 — Valves, Nonpowered
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
seat_angle44.4 DEGREES NOMINAL
inside_depth2.875 INCHES NOMINAL IN
overall_height4.531 INCHES NOMINAL IN
shank_diameter2.617 INCHES NOMINAL IN
flange_diameter2.625 INCHES NOMINAL IN
inside_diameter1.875 INCHES NOMINAL IN
style_designatorPOPPET
under_flange_height0.469 INCHES NOMINAL IN
NSN4820-00-571-5899
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NL-0994-1 · 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
•
SHANK DIAMETER: 2.617 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.625 INCHES NOMINAL IN
•
INSIDE DEPTH: 2.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
SEAT ANGLE: 44.4 DEGREES NOMINAL
•
INSIDE DIAMETER: 1.875 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.469 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SHANK DIAMETER2.617 INCHES NOMINAL IN
FLANGE DIAMETER2.625 INCHES NOMINAL IN
OVERALL HEIGHT4.531 INCHES NOMINAL IN
INSIDE DEPTH2.875 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
SEAT ANGLE44.4 DEGREES NOMINAL
INSIDE DIAMETER1.875 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.469 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
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
NL994Reference document
Same NSN cross-reference
Reference document — Secondary reference
NL994-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NL-0994-1?
NL-0994-1 is a DISK,VALVE.
What parts can replace NL-0994-1?
There are 2 known substitutes for NL-0994-1: NL994, NL994-1. Substitute compatibility should be verified for your specific system.
What is the NSN for NL-0994-1?
NL-0994-1 is cataloged in the U.S. Government catalog under NSN 4820-00-571-5899. 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.