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7767989 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

7767989: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1117 OVERALL, thread_length: 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 2.000 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, seat_angle_in_deg: 30.000 NOMINAL, nominal_thread_size: 1.625 INCHES SINGLE THREADED PORTION IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-776-7989, 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
7767989
NSN: 4820-00-776-7989
FSC: 4820 — Valves, Nonpowered
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1117 OVERALL
thread_length0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter2.000 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
seat_angle_in_deg30.000 NOMINAL
nominal_thread_size1.625 INCHES SINGLE THREADED PORTION IN
under_flange_height0.609 INCHES NOMINAL IN
body_inside_diameter1.125 INCHES NOMINAL IN
body_outside_diameter1.625 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch12 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
NSN4820-00-776-7989
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 7767989 · 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: 0.250 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.000 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.625 INCHES NOMINAL IN
•
THREAD LENGTH: 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
BODY INSIDE DIAMETER: 1.125 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 1.625 INCHES SINGLE THREADED PORTION IN
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.250 INCHES NOMINAL IN
FLANGE DIAMETER2.000 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.625 INCHES NOMINAL IN
THREAD LENGTH0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
STYLE DESIGNATORPLAIN FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC ALL MATERIAL RESPONSES OVERALL
BODY INSIDE DIAMETER1.125 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.625 INCHES SINGLE THREADED PORTION IN
UNDER FLANGE HEIGHT0.609 INCHES NOMINAL IN
THREAD QUANTITY PER INCH12 SINGLE THREADED PORTION
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

No substitute or cross-reference records for this part.

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 7767989?
7767989 is a SEAT,VALVE.
What is the NSN for 7767989?
7767989 is cataloged in the U.S. Government catalog under NSN 4820-00-776-7989. 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.