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803-6397408-PC020 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-6397408-PC020: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON AND RUBBER, hole_diameter: 0.820 INCHES NOMINAL IN, outside_diameter: 25.020 INCHES NOMINAL IN, special_features: FOR SZ 8.000 IN. SPRINKLER VALVE IN, style_designator: FLAT, bolt_hole_quantity: 16.

This part is cataloged in the U.S. Government catalog under NSN 4810-01-396-5149, 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
803-6397408-PC020
NSN: 4810-01-396-5149
FSC: 4810 — Valves, Powered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON AND RUBBER
hole_diameter0.820 INCHES NOMINAL IN
outside_diameter25.020 INCHES NOMINAL IN
special_featuresFOR SZ 8.000 IN. SPRINKLER VALVE IN
style_designatorFLAT
bolt_hole_quantity16
material_thickness0.140 INCHES NOMINAL IN
bolt_circle_diameter23.250 INCHES NOMINAL IN
center_hole_diameter1.160 INCHES NOMINAL IN
media_for_which_designedWATER
material_document_and_classificationLOCKHEED-CALIFORNIA CO, C-22-1221 MFR REF SINGLE MATERIAL RESPONSE
NSN4810-01-396-5149
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-6397408-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
•
OUTSIDE DIAMETER: 25.020 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: LOCKHEED-CALIFORNIA CO, C-22-1221 MFR REF SINGLE MATERIAL RESPONSE
•
MATERIAL THICKNESS: 0.140 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 16
•
BOLT CIRCLE DIAMETER: 23.250 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.160 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER25.020 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL DOCUMENT AND CLASSIFICATIONLOCKHEED-CALIFORNIA CO, C-22-1221 MFR REF SINGLE MATERIAL RESPONSE
MATERIAL THICKNESS0.140 INCHES NOMINAL IN
BOLT HOLE QUANTITY16
BOLT CIRCLE DIAMETER23.250 INCHES NOMINAL IN
SPECIAL FEATURESFOR SZ 8.000 IN. SPRINKLER VALVE IN
CENTER HOLE DIAMETER1.160 INCHES NOMINAL IN
MEDIA FOR WHICH DESIGNEDWATER
MATERIALPLASTIC POLYAMIDE NYLON AND RUBBER
OTHER ITEMS IN FSC 4810 — Valves, Powered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4810-00-001-1247 4810-00-001-4499 4810-00-001-4531 4810-00-001-4532 4810-00-001-4554 4810-00-001-4555 4810-00-001-4556 4810-00-001-4611
SUBSTITUTES & CROSS-REFERENCES 1
803-6397408Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 803-6397408-PC020?
803-6397408-PC020 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 803-6397408-PC020?
There is 1 known substitute for 803-6397408-PC020: 803-6397408. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-6397408-PC020?
803-6397408-PC020 is cataloged in the U.S. Government catalog under NSN 4810-01-396-5149. 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.