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803-6397408-PC027 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-6397408-PC027: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY SEAT, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 1.410 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 8.000 INCHES NOMINAL IN, special_features: FOR SPRINKLER VALVE SIZE 6.000 IN. IN, style_designator: THREADED FLANGED.

This part is cataloged in the U.S. Government catalog under NSN 4810-01-396-5151, 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-PC027
NSN: 4810-01-396-5151
FSC: 4810 — Valves, Powered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY SEAT
thread_class2A SINGLE THREADED PORTION A
thread_length1.410 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter8.000 INCHES NOMINAL IN
special_featuresFOR SPRINKLER VALVE SIZE 6.000 IN. IN
style_designatorTHREADED FLANGED
nominal_thread_size6.750 INCHES SINGLE THREADED PORTION IN
under_flange_height1.410 INCHES NOMINAL IN
body_inside_diameter6.001 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_quantity_per_inch8 SINGLE THREADED PORTION
thread_series_designatorUN SINGLE THREADED PORTION
NSN4810-01-396-5151
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-6397408-PC027 · 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
•
FLANGE SEAT TO DISK END HEIGHT: 0.280 INCHES NOMINAL IN
•
FLANGE DIAMETER: 8.000 INCHES NOMINAL IN
•
THREAD LENGTH: 1.410 INCHES NOMINAL SINGLE THREADED PORTION IN
•
STYLE DESIGNATOR: THREADED FLANGED
•
BODY INSIDE DIAMETER: 6.001 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 6.750 INCHES SINGLE THREADED PORTION IN
•
UNDER FLANGE HEIGHT: 1.410 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.280 INCHES NOMINAL IN
FLANGE DIAMETER8.000 INCHES NOMINAL IN
THREAD LENGTH1.410 INCHES NOMINAL SINGLE THREADED PORTION IN
STYLE DESIGNATORTHREADED FLANGED
BODY INSIDE DIAMETER6.001 INCHES NOMINAL IN
NOMINAL THREAD SIZE6.750 INCHES SINGLE THREADED PORTION IN
SPECIAL FEATURESFOR SPRINKLER VALVE SIZE 6.000 IN. IN
UNDER FLANGE HEIGHT1.410 INCHES NOMINAL IN
THREAD CLASS2A SINGLE THREADED PORTION A
THREAD QUANTITY PER INCH8 SINGLE THREADED PORTION
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-PC027?
803-6397408-PC027 is a SEAT,VALVE.
What parts can replace 803-6397408-PC027?
There is 1 known substitute for 803-6397408-PC027: 803-6397408. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-6397408-PC027?
803-6397408-PC027 is cataloged in the U.S. Government catalog under NSN 4810-01-396-5151. 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.