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821144PCALL — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

821144PCALL: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.562 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 0.783 INCHES NOMINAL IN, style_designator: THREADED FLANGED, nominal_thread_size: 0.625 INCHES SINGLE THREADED PORTION IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-375-8370, 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
821144PCALL
NSN: 4820-00-375-8370
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.562 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter0.783 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
nominal_thread_size0.625 INCHES SINGLE THREADED PORTION IN
under_flange_height0.968 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_series_designatorUNF SINGLE THREADED PORTION
body_stepped_inside_diameter0.435 INCHES NOMINAL FIRST STEP IN
flange_seat_to_disk_end_height0.312 INCHES NOMINAL IN
NSN4820-00-375-8370
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 821144PCALL · 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: 0.312 INCHES NOMINAL IN
•
FLANGE DIAMETER: 0.783 INCHES NOMINAL IN
•
THREAD LENGTH: 0.562 INCHES NOMINAL SINGLE THREADED PORTION IN
•
BODY STEPPED INSIDE DIAMETER: 0.325 INCHES NOMINAL SECOND STEP IN
•
STYLE DESIGNATOR: THREADED FLANGED
•
NOMINAL THREAD SIZE: 0.625 INCHES SINGLE THREADED PORTION IN
•
UNDER FLANGE HEIGHT: 0.968 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.312 INCHES NOMINAL IN
FLANGE DIAMETER0.783 INCHES NOMINAL IN
THREAD LENGTH0.562 INCHES NOMINAL SINGLE THREADED PORTION IN
BODY STEPPED INSIDE DIAMETER0.325 INCHES NOMINAL SECOND STEP IN
BODY STEPPED INSIDE DIAMETER0.435 INCHES NOMINAL FIRST STEP IN
STYLE DESIGNATORTHREADED FLANGED
NOMINAL THREAD SIZE0.625 INCHES SINGLE THREADED PORTION IN
UNDER FLANGE HEIGHT0.968 INCHES NOMINAL IN
THREAD CLASS2A SINGLE THREADED PORTION A
MATERIALSTEEL OVERALL
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 2
548345Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
4700-3112615PC548345Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 821144PCALL?
821144PCALL is a SEAT,VALVE.
What parts can replace 821144PCALL?
There are 2 known substitutes for 821144PCALL: 548345, 4700-3112615PC548345. Substitute compatibility should be verified for your specific system.
What is the NSN for 821144PCALL?
821144PCALL is cataloged in the U.S. Government catalog under NSN 4820-00-375-8370. 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.