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803-6983468-PC028 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-6983468-PC028: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON AND RUBBER SYNTHETIC, temp_rating: 165.0 FAHRENHEIT MAXIMUM DEGF, hole_diameter: 0.840 INCHES NOMINAL IN, pressure_rating: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, outside_diameter: 22.060 INCHES NOMINAL IN, special_features: ADDITIONAL MATERIAL: FIBER. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-431-6684, 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-PC028
NSN: 4820-01-431-6684
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON AND RUBBER SYNTHETIC
temp_rating165.0 FAHRENHEIT MAXIMUM DEGF
hole_diameter0.840 INCHES NOMINAL IN
pressure_rating250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
outside_diameter22.060 INCHES NOMINAL IN
special_featuresADDITIONAL MATERIAL: FIBER
style_designatorFLAT
bolt_hole_quantity16
material_thickness0.140 INCHES NOMINAL IN
bolt_circle_diameter20.250 INCHES NOMINAL IN
center_hole_diameter1.160 INCHES NOMINAL IN
end_item_identificationFIRE FIGHTING EQUIPMENT
NSN4820-01-431-6684
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-6983468-PC028 · 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
•
PRESSURE RATING: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
TEMP RATING: 165.0 FAHRENHEIT MAXIMUM DEGF
•
OUTSIDE DIAMETER: 22.060 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.140 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 16
•
BOLT CIRCLE DIAMETER: 20.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
PRESSURE RATING250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
TEMP RATING165.0 FAHRENHEIT MAXIMUM DEGF
OUTSIDE DIAMETER22.060 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.140 INCHES NOMINAL IN
BOLT HOLE QUANTITY16
BOLT CIRCLE DIAMETER20.250 INCHES NOMINAL IN
SPECIAL FEATURESADDITIONAL MATERIAL: FIBER
CENTER HOLE DIAMETER1.160 INCHES NOMINAL IN
MEDIA FOR WHICH DESIGNEDWATER, SALT
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 1
6983468Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 803-6983468-PC028?
803-6983468-PC028 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 803-6983468-PC028?
There is 1 known substitute for 803-6983468-PC028: 6983468. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-6983468-PC028?
803-6983468-PC028 is cataloged in the U.S. Government catalog under NSN 4820-01-431-6684. 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.