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C3-19 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

C3-19: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include diameter: 0.131 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN, material: STEEL COMP 420 OVERALL, overall_height: 0.188 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN, overall_length: 0.750 INCHES NOMINAL IN, special_features: MATERIAL SPECIFIC GRAVITY 2.1378, style_designator: SLOTTED. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-653-2127, 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
C3-19
NSN: 4820-00-653-2127
NIINs: 006532127, 010310666
FSC: 4820 — Valves, Nonpowered
CAGE: 32573 — APD CRYOGENICS INC (USA)
SPECIFICATIONS
diameter0.131 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
materialSTEEL COMP 420 OVERALL
overall_height0.188 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
overall_length0.750 INCHES NOMINAL IN
special_featuresMATERIAL SPECIFIC GRAVITY 2.1378
style_designatorSLOTTED
body_inside_diameter0.176 INCHES NOMINAL IN
body_outside_diameter0.375 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
seating_surface_shapeFLAT
NSN4820-00-653-2127
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: C3-19 · 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: 0.375 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 0.176 INCHES NOMINAL IN
•
MATERIAL: PLASTIC OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.188 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.375 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER0.176 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL SPECIFIC GRAVITY 2.1378
MATERIALPLASTIC OVERALL
SEATING SURFACE SHAPEFLAT
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 C3-19?
C3-19 is a SEAT,VALVE.
What is the NSN for C3-19?
C3-19 is cataloged in the U.S. Government catalog under NSN 4820-00-653-2127. 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.