PartsTable
Technical Data Sheet
Download PDF

803-6983468-PC020 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-6983468-PC020: 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, hole_diameter: 0.260 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN, pressure_rating: 450.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS, outside_diameter: 3.200 INCHES NOMINAL IN, style_designator: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-431-6670, 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-PC020
NSN: 4820-01-431-6670
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
temp_rating165.0 FAHRENHEIT MAXIMUM DEGF
hole_diameter0.260 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
pressure_rating450.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
outside_diameter3.200 INCHES NOMINAL IN
style_designatorFLAT
bolt_hole_quantity8
material_thickness0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
bolt_circle_diameter2.800 INCHES NOMINAL IN
center_hole_diameter0.320 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
end_item_identificationW/S CODE, FIRE FIGHTING EQUIPMENT
media_for_which_designedWATER, SALT
NSN4820-01-431-6670
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-6983468-PC020 · 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: 450.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
TEMP RATING: 165.0 FAHRENHEIT MAXIMUM DEGF
•
OUTSIDE DIAMETER: 3.200 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
•
BOLT HOLE QUANTITY: 8
•
BOLT CIRCLE DIAMETER: 2.800 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.320 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
PRESSURE RATING450.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
TEMP RATING165.0 FAHRENHEIT MAXIMUM DEGF
OUTSIDE DIAMETER3.200 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER2.800 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.320 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
MEDIA FOR WHICH DESIGNEDWATER, SALT
END ITEM IDENTIFICATIONW/S CODE, FIRE FIGHTING EQUIPMENT
SUBSTITUTES & CROSS-REFERENCES 1
803-6983468Reference 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
Ready to buy 803-6983468-PC020?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 803-6983468-PC020?
803-6983468-PC020 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 803-6983468-PC020?
There is 1 known substitute for 803-6983468-PC020: 803-6983468. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-6983468-PC020?
803-6983468-PC020 is cataloged in the U.S. Government catalog under NSN 4820-01-431-6670. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 803-6983468-PC020

✓ 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.