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17552-A — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

17552-A: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.750 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 3.438 INCHES NOMINAL IN, style_designator: THREADED FLANGED, nominal_thread_size: 3.250 INCHES SINGLE THREADED PORTION IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-203-7641, 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
17552-A
NSN: 4820-01-203-7641
FSC: 4820 — Valves, Nonpowered
CAGE: 32869 — O. C. KECKLEY COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.750 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter3.438 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
nominal_thread_size3.250 INCHES SINGLE THREADED PORTION IN
under_flange_height0.750 INCHES NOMINAL IN
body_inside_diameter2.750 INCHES MINIMUM AND 2.752 INCHES MAXIMUM IN
seating_surface_shapeFLAT
end_item_identificationMODEL 114 SIZE 4
thread_quantity_per_inch16 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
NSN4820-01-203-7641
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 17552-A · 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: 0.375 INCHES NOMINAL IN
•
FLANGE DIAMETER: 3.438 INCHES NOMINAL IN
•
THREAD LENGTH: 0.750 INCHES NOMINAL SINGLE THREADED PORTION IN
•
STYLE DESIGNATOR: THREADED FLANGED
•
BODY INSIDE DIAMETER: 2.750 INCHES MINIMUM AND 2.752 INCHES MAXIMUM IN
•
NOMINAL THREAD SIZE: 3.250 INCHES SINGLE THREADED PORTION IN
•
UNDER FLANGE HEIGHT: 0.750 INCHES NOMINAL IN
•
THREAD CLASS: 2A SINGLE THREADED PORTION A
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.375 INCHES NOMINAL IN
FLANGE DIAMETER3.438 INCHES NOMINAL IN
THREAD LENGTH0.750 INCHES NOMINAL SINGLE THREADED PORTION IN
STYLE DESIGNATORTHREADED FLANGED
BODY INSIDE DIAMETER2.750 INCHES MINIMUM AND 2.752 INCHES MAXIMUM IN
NOMINAL THREAD SIZE3.250 INCHES SINGLE THREADED PORTION IN
UNDER FLANGE HEIGHT0.750 INCHES NOMINAL IN
THREAD CLASS2A SINGLE THREADED PORTION A
END ITEM IDENTIFICATIONMODEL 114 SIZE 4
THREAD QUANTITY PER INCH16 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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 17552-A?
17552-A is a SEAT,VALVE.
What is the NSN for 17552-A?
17552-A is cataloged in the U.S. Government catalog under NSN 4820-01-203-7641. 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.