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NB21539733 — COIL,RADIO FREQUENCY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NB21539733: COIL,RADIO FREQUENCY.

The COIL,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, overall_height: 0.438 INCHES NOMINAL IN, special_features: WEAPON SYSTEM ESSENTIAL, style_designator: PLAIN, seat_angle_in_deg: 45.000 NOMINAL, body_inside_diameter: 1.949 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-178-2973, 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
NB21539733
NSN: 4820-01-178-2973
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
overall_height0.438 INCHES NOMINAL IN
special_featuresWEAPON SYSTEM ESSENTIAL
style_designatorPLAIN
seat_angle_in_deg45.000 NOMINAL
body_inside_diameter1.949 INCHES NOMINAL IN
body_outside_diameter2.984 INCHES NOMINAL IN
seating_surface_shapeANGULAR
end_item_identificationWHIDBEY ISLAND CLASS LSD
criticality_code_justificationFEAT
NSN4820-01-178-2973
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NB21539733 · 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
•
BODY OUTSIDE DIAMETER: 2.984 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 1.949 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.438 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER2.984 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONFEAT
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER1.949 INCHES NOMINAL IN
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
END ITEM IDENTIFICATIONWHIDBEY ISLAND CLASS LSD
MATERIALCOPPER ALLOY OVERALL
SEAT ANGLE IN DEG45.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
SUBSTITUTES & CROSS-REFERENCES 3
C3415PL2041 ITEM 4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
15397Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
15397-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 NB21539733?
NB21539733 is a COIL,RADIO FREQUENCY.
What parts can replace NB21539733?
There are 3 known substitutes for NB21539733: C3415PL2041 ITEM 4, 15397, 15397-2. Substitute compatibility should be verified for your specific system.
What is the NSN for NB21539733?
NB21539733 is cataloged in the U.S. Government catalog under NSN 4820-01-178-2973. 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.