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K373 — REACTOR

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

K373: REACTOR.

The REACTOR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_height: 0.125 INCHES NOMINAL IN, hardness_rating: 60.0 ROCKWELL C NOMINAL OVERALL, style_designator: PLAIN, seat_angle_in_deg: 0.750 NOMINAL, body_inside_diameter: 0.343 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-217-3471, 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
K373
NSN: 4820-00-217-3471
NIINs: 002173471, 013755025
FSC: 4820 — Valves, Nonpowered
CAGE: 81118 — EATON CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_height0.125 INCHES NOMINAL IN
hardness_rating60.0 ROCKWELL C NOMINAL OVERALL
style_designatorPLAIN
seat_angle_in_deg0.750 NOMINAL
body_inside_diameter0.343 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
body_outside_diameter0.678 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
NSN4820-00-217-3471
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: K373 · 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: 0.678 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
•
HARDNESS RATING: 60.0 ROCKWELL C NOMINAL OVERALL
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 0.343 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
SEAT ANGLE IN DEG: 0.750 NOMINAL
•
SEATING SURFACE SHAPE: ANGULAR
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.125 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.678 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
HARDNESS RATING60.0 ROCKWELL C NOMINAL OVERALL
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER0.343 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SEAT ANGLE IN DEG0.750 NOMINAL
SEATING SURFACE SHAPEANGULAR
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is K373?
K373 is a REACTOR.
What is the NSN for K373?
K373 is cataloged in the U.S. Government catalog under NSN 4820-00-217-3471. 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.