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803-6983468 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-6983468: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON, temp_rating: 165.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 2A SINGLE THREADED PORTION A, hole_diameter: 0.260 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN, thread_length: 0.570 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 0.099 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-431-1287, 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
803-6983468
NSN: 4820-01-431-1287
NIINs: 014311287, 014311290, 014311366, 014311371, 014316669, 014316670, 014319091, 014319094, 014319193
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
temp_rating165.0 FAHRENHEIT MAXIMUM DEGF
thread_class2A SINGLE THREADED PORTION A
hole_diameter0.260 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
thread_length0.570 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height0.099 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
overall_length0.380 INCHES NOMINAL IN
flange_diameter3.500 INCHES NOMINAL IN
inside_diameter0.312 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN
pressure_rating450.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
outside_diameter3.200 INCHES NOMINAL IN
special_featuresVALVE DESIGNED FOR SIZE 0.375 INCH OR 0.500 INCH IN
NSN4820-01-431-1287
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-6983468 · 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
•
VALVE TYPE FOR WHICH DESIGNED: CHECK
•
VALVE SIZE FOR WHICH DESIGNED: 3.000 INCHES IN
•
INSIDE DIAMETER: 0.755 INCHES NOMINAL IN
•
VALVE DESIGN CONTROL ACTIVITY: 57311
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDCHECK
OVERALL LENGTH3.940 INCHES NOMINAL IN
VALVE SIZE FOR WHICH DESIGNED3.000 INCHES IN
INSIDE DIAMETER0.755 INCHES NOMINAL IN
VALVE DESIGN CONTROL ACTIVITY57311
MATERIALCOPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 803-6983468?
803-6983468 is a DIAPHRAGM,VALVE,FLAT.
What is the NSN for 803-6983468?
803-6983468 is cataloged in the U.S. Government catalog under NSN 4820-01-431-1287. 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.