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9871P — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

9871P: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thread_class: 2B SINGLE THREADED PORTION, thread_length: 0.750 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 8.500 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, nominal_thread_size: 0.875 INCHES SINGLE THREADED PORTION IN. This part is cataloged in the U.S.

Government catalog under NSN 4810-00-152-7231, 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
9871P
NSN: 4810-00-152-7231
FSC: 4810 — Valves, Powered
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_class2B SINGLE THREADED PORTION
thread_length0.750 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter8.500 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
nominal_thread_size0.875 INCHES SINGLE THREADED PORTION IN
under_flange_height0.438 INCHES NOMINAL IN
body_inside_diameter0.875 INCHES NOMINAL IN
body_outside_diameter8.062 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_series_designatorUNF SINGLE THREADED PORTION
flange_seat_to_disk_end_height1.312 INCHES NOMINAL IN
NSN4810-00-152-7231
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 9871P · 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: 1.312 INCHES NOMINAL IN
•
FLANGE DIAMETER: 8.500 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 8.062 INCHES NOMINAL IN
•
THREAD LENGTH: 0.750 INCHES NOMINAL SINGLE THREADED PORTION IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.875 INCHES SINGLE THREADED PORTION IN
•
UNDER FLANGE HEIGHT: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT1.312 INCHES NOMINAL IN
FLANGE DIAMETER8.500 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER8.062 INCHES NOMINAL IN
THREAD LENGTH0.750 INCHES NOMINAL SINGLE THREADED PORTION IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.875 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.875 INCHES SINGLE THREADED PORTION IN
UNDER FLANGE HEIGHT0.438 INCHES NOMINAL IN
THREAD CLASS2B SINGLE THREADED PORTION
MATERIALCOPPER ALLOY OVERALL
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

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 9871P?
9871P is a SEAT,VALVE.
What is the NSN for 9871P?
9871P is cataloged in the U.S. Government catalog under NSN 4810-00-152-7231. 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.